2-way cartridge valves-pressure functions cartridge valves ...Ød6 1) 46 8 10 101216 20 Ød7h13 46...

LC; LFA 1/68

RE 21 050/02.99

Overview of contents

Description Page

Function, section, symbols– General 2– Pressure relief function 2– Pressure reducing function 2 to 3– Pressure sequencing function 3– Cavity and porting pattern 4

Pressure relief function:– Cartridge valve type LC . DB…:

•Ordering details 5•Symbols 5•Technical data 5•Characteristic curves 6 to 11•Seal kits 12•Compression springs 12

– Control cover type LFA . DB…:•Ordering details (general) 13 to 14•Technical data 14•Pilot valves 15•Symbols (basic symbols) 16•R-rings for pilot oil connections 17•Seal kits 17•Fixing screws 17• Orifice dimensions 17

Ordering details, symbols and unit dimensions:– Type DB 18 to 20– Types DBW; DBS 21 to 25– Type DBWD 26 to 28– Type DBU2 29 to 32– Type DBU3D 33 to 37– Type DBE 38– Type DBEM 39 to 42

RE 21 050/02.99

Replaces: 11.96

2-way cartridge valves-pressure functionsCartridge valves type LC...Control covers type LFA...

Nominal size 16 to 100Series 6X; 7XMaximum operating pressure 420 barMaximum flow 7000 L/min

Cartridge valve type LC 25 DB40E-7XControl cover with manual pressure adjustment, electricalunloading type LFA 25 DBW2-7X/315 with built-on directional valve.

H/A/

D 55

93Description Page

Pressure reducing function:– Cartridge valve type LC . DR…:

•Ordering details 43•Symbol 43•Technical data 43•Characteristic curves 44 to 46•Seal kits 47•Compression springs 47

– Control cover type LFA . DR…:•Ordering details (general) 48•Symbol 48•Technical data 49•Pilot valve 49•Symbols (basic symbols) 50•R-rings for the pilot oil connections 51•Fixing screws 51• General dimensions 52

Ordering details, symbols and unit dimensions:– Type DR 53 to 54– Type DRW 55 to 56– Types DREV; DREZ 57 to 58– Types DREWV; DREWZ 59 to 60

Pressure sequencing function:– Control cover type LFA . DZ…:

•Ordering details (general) 61•Symbols (basic symbols) 61•Technical data 62•R-rings for pilot oil connections 62• Seal kits 63•Fixing screws 63• Orifice dimensions 63

Ordering details, symbols and unit dimensions:– Type DZ 64 to 65– Type DZW 66 to 67

RE 21 050/02.99

Rexroth Hydraulics 2/68 LC; LFA

F**

X

A

YB

X** T

B

A

X YX** F**

A

4

6

1

3

2

5

B

Function, section, symbols

General

The 2-way cartridge valves for pressure control functions are pilotoperated poppet or spool valves. The main component designed as acartridge valve (1) is inserted in a cavity bore standardised toDIN ISO 7368 and is sealed by control cover (2).The pilot valve (4) for either manual or electrical proportional pressurecontrol is integrated into the control cover (2) or mounted onto thecontrol cover as a pilot valve with interface connections toDIN 24 340 (2).

By combining the cartridge valve with the control covers differentpressure functions can be realised.

Pressure relief function

Control cover type LFA..DB...

Cartridge valve type LC..DB...The cartridge valve (1) for the pressure relief function (type LC . DB…)is a poppet valve without an area differential (no effective area atport B). The pressure acting at port A is fed via the pilot oil spplyorifice (5) to the spring side (6) of the element. At pressures belowthe setting of pilot valve (4) the forces on spool (3) are balanced andthe spool remains closed due to the spring force. On reaching the setpressure, spool (3) opens and limits the pressure at port A in linewith the pressure-flow characteristics.

Pressure reducing function

a) Normally open: Control cover type LFA..DB...

Cartridge valve type LC..DR...

The cartridge valve for the pressure reducing function is a spool valvewithout an area differential (no effective area at port B).The same types of cover are used as pilot valves as are used for thepressure relief functions (type LFA..D...).

The pressure acting at port A is fed to the spring side of the spool viathe pilot oil supply orifice. Below the performance limit and pressureset at the pilot valve, the spool is pressure balanced and is held openby the spring force, so that oil is free to flow from port B to port A.

On reaching the set pressure, the spool closes and reduces the pressureat port a in line with the pressure-flow characteristics.

LC..DB.D... LC..DB.E...

Type LFA..DB...

Type LC..DB...

e.g.

Type LFA..DB...

Type LC..DR40...

LC; LFA 3/68 Rexroth Hydraulics

RE 21 050/02.99

X YX** F**

M

A

BZ2

X

A

BYZ2 Z1

HD ND

pS

RV

X

A

BYZ2 Z1

Function, symbols

b) Normally closed: Control cover type LFA..DR...

Cartridge valve type LC..DB40D...

For the pressure reducing function with opening characteristics apressure relief valve cartridge (type LC..DB40D...) and a control coverwith a pressure reducing valve (type LFA..DR...) as the pilot valve areused. The pilot oil is fed from port A via the pilot supply orifice andthe open pressure reducing pilot valve to side B.The main spool opens and allows free flow from port A to port B.

On reaching the set pressure, the spool closes and reduces the pressureat port B in line with the pressure-flow characteristics. Possible excesspressures occurring on the secondary side are led away to tank viathe third port of the pilot valve. By fitting a directional valve, an addi-tional isolating function can also be attained (type LFA..DRW...).

Example 2: (circuit for the pressure dependent sequencing of a2nd system)With this circuit, oil is allowed to flow into system 2 when the pressurein system 1 has reached a pre-set value. The pilot oil supply is internalfrom port A of the main valve.

System 2

Typical circuits

Example 1: (Circuit for the pressure dependent unloading of thelow pressure system)In the circuit shown, the system is fed by a high pressure pump anda low pressure pump. The system pressure pS acts externally from thehigh pressure side via the pilot oil port X on the pilot valve which, onreaching the set pressure, switches the low pressure side to give zeropressure circulation. The check valve RV (not included within the scopeof supply) prevents the high pressure system from flowing into thelow pressure system which is now at zero pressure.

Pressure sequencing function

Control cover type LFA..DZ...Cartridge valve type LC..DB...

This function enables a pressure-dependent sequencing of a secondsystem.

The required sequencing pressure is set by the pilot valve which isintegrated into the control cover.The pilot oil supply may be either external (pilot oil port X) or internal(from port A via pilot oil port X or Z2).

The spring chamber of the pilot control is drained at zero pressurevia ports Y or Z1 to tank.

System 1

e.g.

Type LFA..DR...

Type LC..DB40D...

e.g.

Type LFA..DZ...XY

Type LC..DB20D...

e.g.

Type LFA..DZ...Y

Type LC..DB20D...

When the pressure set at the pilot control spring is reached, the pilotvalve switches and unloads the spring chamber of the main valve totank. The main spools opens and makes the connection from port Ato B possible.

In model LFA..DZW..., the required spool position may be selected bymeans of an electrically operated pilot valve (not included within thesupply of control cover LFA..DZW...) in addition to the normal hydrauliccontrol.

RE 21 050/02.99


=X

=Y

=Z

Rmax 4

Rmax 8

RZ 10

L1

L2±0,2

L5±0,2

L4±0

,2L4

±0,2

L4±0,2L4±0,2

L3±0

,2

L1

4 x D5; H4

ØD7H13; 10 ØD6 max.(X,Y,Z1,Z2)

Z1

YX

Z2

L2±0

,2L5±0

,2

ØD6 max.(X,Y,Z1,Z2)

ØD7H13; 10

5

8L3±0,2

6

8 x D5; H4

ØD7H13; 10

ØD6 max.(X,Y,Z1,Z2)

L2±0

,3

L1

35°22,5°

45°

Z1

Y

Z2

X

5

X

Y

AØD1H7

W

T

H8 1

5°

H1(

H1*

)

ØD

3(D

3*)

15°

H9

A

B

ØD2

ØD4H7

H7

H6

H5

H3±

0,1

H2+

0,1

A0,05

Z

Z

Z

7 1

7 13 2 4

Installation cavity and porting pattern to DIN ISO 7368 (Dimensions in mm)

NS 80, 100

NS 16 to 63

1 Depth of fit2 Reference dimension

3 For diameters of port B other than ØD3 or (ØD3*), the distancefrom the cover mounting surface to the centre of this hole mustbe calculated.

4 Port B may be moved about the cental axis of port A. Care musthowever be taken to ensure that the fixing holes and controlholes are not damaged.

5 Drilling for location pin (cover location pin fitted toDIN 24 342)

6 Note on NS 16 porting pattern:Length L1 (axis x–y drilling) is 80 mm.

7 For Ø ≤ 45 mm → fit H8 is permitted!8 Drilling for locating pin with functions as a main pressure relief

valve (cover locating pin has to be appropriately relocatedduring assembly)

1) max. dim.

NS 16 25 32 40 50 63 80 100

ØD1H7 32 45 60 75 90 120 145 180ØD2 16 25 32 40 50 63 80 100ØD3 16 25 32 40 50 63 80 100

(ØD3*) 25 32 40 50 63 80 100 125ØD4H7 25 34 45 55 68 90 110 135ØD5 M8 M12 M16 M20 M20 M30 M24 M30

ØD6 1) 4 6 8 10 10 12 16 20ØD7H13 4 6 6 6 8 8 10 10

H1 34 44 52 64 72 95 130 155(H1*) 29.5 40.5 48 59 65.5 86.5 120 142

H2 56 72 85 105 122 155 205 245H3 43 58 70 87 100 130 175±0,2 210±0,2

H4 20 25 35 45 45 65 50 63H5 11 12 13 15 17 20 25 29H6 2 2.5 2.5 3 3 4 5 5H7 20 30 30 30 35 40 40 50H8 2 2.5 2.5 3 4 4 5 5H9 0.5 1 1.5 2.5 2.5 3 4.5 4.5L1 65/80 85 102 125 140 180 Ø250 Ø300L2 46 58 70 85 100 125 Ø200 Ø245L3 23 29 35 42.5 50 62.5 – –L4 25 33 41 50 58 75 – –L5 10.5 16 17 23 30 38 – –W 0.05 0.05 0.1 0.1 0.1 0.2 0.2 0.2


RE 21 050/02.99

A

B

A

B

A

B

A

B

Pressure relief function

Ordering details: pressure relief cartridge valves (without control cover)

No code = NBR sealsV = FKM seals

(other seals on request)

Attention!The compatibility of the seals and pressure

fluid has to be taken into account!

7X = (NS 16 to 63) Series 70 to 79(70 to 79: unchanged installation and connection dimensions)

6X = (NS 80 and 100) Series 60 to 69(60 to 69: unchanged installation and connection dimensions)

E = Poppet valve without orifice (standard)D = Spool poppet valve without orifice (standard)A = Poppet valve with orificeB = Spool poppet valve with orifice

Nominal size 16 = 16Nominal size 25 = 25Nominal size 32 = 32Nominal size 40 = 40Nominal size 50 = 50Nominal size 63 = 63Nominal size 80 = 80Nominal size 100 = 100

Cracking pressure approx. 0 bar (without spring) = 00Cracking pressure approx. 2 bar = 20Cracking pressure approx. 3 bar = 30 1)

Cracking pressure approx. 4 bar = 40Cracking pressure approx. 5 bar = 50 2)

Cracking pressure approx. 8 bar = 80 3)

(Series 7X)

(Series 6X)

LC DB

Preferred types and standard components arehighlighted in the RPS (Rexroth Price list Standard).

1) Cracking pressure 3.0 bar only with NS16 for fitting a pilotoperated pressure relief valve type DBC . -5X/…SO187 (seecatalogue sheet RE 25 802)

2) Only with NS 16, 25 and 323) Special installation area required (see page 12)

Symbols: cartridge valves (for versions see ordering details)

Poppet valve without orificeVersion „E“

Spool poppet valve with orificeVersion „A“

Spool poppet valve without orificeVersion „D“

Spool poppet valve with orificeVersion „B“

Pressure fluid mineral oil (HL, HLP) to DIN 51 524 1);fast bio-degradable pressure fluids toVDMA 24 568 (also see RE 90 221); HETG (rape seed oil) 1);HEPG (polyglycole) 2); HEES (synthetic ester) 2);other pressure fluids on request

Pressure fluid temperature range °C – 30 to + 80 for NBR seals

– 20 to + 80 for FKM seals

Viscosity range mm2/s 2.8 to 380

Degree of contamination Maximum permissible degree of contamination of the pressurefluid is to NAS 1638 class 9. We, therefore, recommend a filterwith a minimum retention rate of ß10 ≥ 75.

2-way cartridge valve

Max. operating pressure – Ports A and B bar 420

Max. flow (recommendation) NS16 NS25 NS32 NS40 NS50 NS63 NS80 NS100

– Poppet valve cartridge „E“ and „A“ L/min 300 450 600 1000 1600 2500 4500 7000

– Spool valve cartridge „D“ and „B“ L/min 175 300 450 700 1400 1750 3200 4900

Technical data (for applications outside these parameters, please consult us!)

1) suitable for NBR and FKM seals2) only suitable for FKM seals

RE 21 050/02.99


50 100 150 200 250

5

10

15

0

..DB40..

..DB20..

50 250

50

350

0 100 150 200

100

150

200

250

300

50 100 150 200 250

5

10

15

0

..DB40..

..DB20..

50 250

50

350

0 100 150 200

100

150

200

250

300

50 100 150 200 250

5

10

15

0

..DB40..

..DB20..

50 250

50

350

0 100 150 200

100

150

200

250

300

50 100 150 200 250

5

10

15

0

..DB40..

..DB20..

50 250

50

350

0 100 150 200

100

150

200

250

300

Characteristic curves: nominal size 16 (measured at ν = 41 mm2/s and ϑ = 50 °C)The characteristic curves were measured with an external pilot oil drain at zero pressure. With an internal pilot oil drain the inlet pressure isincreased to the pressure being applied at port B.

Manual pressure adjustment, type LFA 16 DB… and type LFA 16 DBW…

Type LC 16 DB.E… (with poppet valve)

Bypa

ss p

ress

ure

1) in

bar

→Lo

wes

t set

tabl

e pr

essu

re 2

) in

bar →

Flow in L/min → Flow in L/min →

Inle

t pre

ssur

e in

bar

→

Type LC 16 DB.D… (with poppet spool valve)

Bypa

ss p

ress

ure

1) in

bar

→Lo

wes

t set

tabl

e pr

essu

re 2

) in

bar →


Inle

t pre

ssur

e in

bar

→

Electrical proportional pressure adjustment, type LFA 16 DBE…


Low

est s

etta

ble

pres

sure

in b

ar →


Inle

t pre

ssur

e in

bar

→



Inle

t pre

ssur

ein

bar →

Low

est s

etta

ble

pres

sure

in b

ar →

1)

2)

1)

2)


RE 21 050/02.99

100 400

5

10

15

0

..DB40..

..DB20..

100

50

350

0

100

150

200

250

300

200 300 200 300 400150 250 35050

100 400

5

10

15

0

..DB40..

..DB20..

100

50

350

0

100

150

200

250

300

200 300 200 300 40050 150 250 350

100 400

5

10

15

0

..DB40..

..DB20..

100

50

350

0

100

150

200

250

300

200 300 200 300 400150 250 35050

100 400

5

10

15

0

..DB40..

..DB20..

100

50

350

0

100

150

200

250

300

200 300 200 300 40050 150 250 350

Characteristic curves: nominal size 25 (measured at ν = 41 mm2/s and ϑ = 50 °C)The characterisitc curves were measured with an external pilot oil drain at zero pressure. With an internal pilot oil drain the inlet pressure isincreased to the pressure being applied at port.



Bypa

ss p

ress

ure

1) in

bar

→Lo

wes

t set

tabl

e pr

essu

re 2

) in

bar →


Inle

t pre

ssur

e in

bar

→


Bypa

ss p

ress

ure

1) in

bar

→Lo

wes

t set

tabl

e pr

essu

re 2

) in

bar →


Inle

t pre

ssur

e in

bar

→




Inle

t pre

ssur

e in

bar

→



Inle

t pre

ssur

e in

bar

→

Low

est s

etta

ble

pres

sure

in b

ar →

Low

est s

etta

ble

pres

sure

in b

ar →

1)

2)

1)

2)

RE 21 050/02.99


50

350

0

100

150

200

250

300

600100 200 300 400 500100 600

5

10

15

0

..DB40..

..DB20..

200 300 400 500

50

350

0

100

150

200

250

300

600100 200 300 400 500100 600

5

10

15

0

..DB40..

..DB20..

200 300 400 500

100 600

5

10

15

0

..DB40..

..DB20..50

350

0

100

150

200

250

300

600100200 300 400 500 200 300 400 500

100 600

5

10

15

0

..DB40..

..DB20..50

350

0

100

150

200

250

300

600100200 300 400 500 200 300 400 500

Characterisitic curves: nominal size 32 (measured at ν = 41 mm2/s and ϑ = 50 °C)The characteristic curves were measured with an external pilot oil drain at zero pressure. With an internal pilot oil drain the inlet pressue isincreased to the pressure being applied at port B.


Typ LC 32 DB.E… (with poppet valve)

Bypa

ss p

ress

ure

1) in

bar

→Lo

wes

t set

tabl

e pr

essu

re 2

) in

bar →


Inle

t pre

ssur

e in

bar

→


Bypa

ss p

ress

ure

1) in

bar

→Lo

wes

t set

tabl

e pr

essu

re 2

) in

bar →


Inle

t pre

ssur

e in

bar

→



Low

est s

etta

ble

pres

sure

in b

ar →


Inle

t pre

ssur

e in

bar

→



Inle

t pre

ssur

e in

bar

→

Low

est s

etta

ble

pres

sure

in b

ar →

1)

2)

1)

2)


RE 21 050/02.99

15

20

10

5

0 200 400 600 800 1000

..DB40..

..DB20..

1000800600400200

200

250

350

300

150

100

50

0

15

20

10

5

0 200 400 600 800 1000 1000800600400200

200

250

350

300

150

100

50

0

..DB20..

..DB40..

15

20

10

5

0 200 400 600 800 1000

..DB20..

1000800600400200

200

250

350

300

150

100

50

0

..DB40..

15

20

10

5

0 200 400 600 800 1000

..DB40..

..DB20..

1000800600400200

200

250

350

300

150

100

50

0

Characteristic curves: nominal size 40 (measured at ν = 41 mm2/s and ϑ = 50 °C)The characteristic curves were measured with an external pilot oil drain at zero pressure. With an internal pilot oil drain the inlet pressure isincreased to the pressure being applied at port.



Bypa

ss p

ress

ure

1) in

bar

→Lo

wes

t set

tabl

e pr

essu

re 2

) in

bar →


Inle

t pre

ssur

e in

bar

→


Bypa

ss p

ress

ure

1) in

bar

→Lo

wes

t set

tabl

e pr

essu

re 2

) in

bar →


Inle

t pre

ssur

e in

bar

→



Low

est s

etta

ble

pres

sure

in b

ar →


Inle

t pre

ssur

e in

bar

→



Inle

t pre

ssur

e in

bar

→

Low

est s

etta

ble

pres

sure

in b

ar →

1)

2)

1)

2)

RE 21 050/02.99


500 1000 1500 2000

15

20

10

5

0

..DB40..

25

30

..DB20..

200

250

350

300

150

100

50

0 500 1000 1500 2000

500 1000 1500 2000

15

20

10

5

0

..DB40..

..DB20..

30

500 1000 1500 2000

200

250

350

300

150

100

50

0

25

15

20

10

5

0 500 1000 1500 2000

25

30

500 1000 1500 2000

200

250

350

300

150

100

50

0

..DB20..

..DB40..

500 1000 1500 2000

200

250

350

300

150

100

50

02000500 1000 1500

15

20

10

5

0

30

..DB20..

..DB40..

25




Bypa

ss p

ress

ure

1) in

bar

→Lo

wes

t set

tabl

e pr

essu

re 2

) in

bar →


Inle

t pre

ssur

e in

bar

→Type LC 50 DB.D… (with poppet spool valve)

Bypa

ss p

ress

ure

1) in

bar

→Lo

wes

t set

tabl

e pr

essu

re 2

) in

bar →


Inle

t pre

ssur

e in

bar

→



Low

est s

etta

ble

pres

sure

in b

ar →


Inle

t pre

ssur

e in

bar

→



Inle

t pre

ssur

e in

bar

→

Low

est s

etta

ble

pres

sure

in b

ar →

1)

2)

1)

2)


RE 21 050/02.99

500 1000 1500 20000 2500

15

20

10

5

..DB40..

..DB20..

30

200

250

350

300

150

100

50

500 1000 1500 20000 2500

25

500 1000 1500 20000 2500500 1000 1500 20000 2500

..DB40..

200

250

350

300

150

100

50

15

20

10

5

30

..DB20..

25

0 2500500 1000 1500 20000 2500

15

20

10

5

30

200

250

350

300

150

100

50

..DB20..

..DB40..

500 1000 1500 2000

25

2500

15

20

10

5

25

30

200

250

350

300

150

100

50

0500 1000 1500 20000 2500 500 1000 1500 2000

..DB20..

..DB40..




Bypa

ss p

ress

ure

1) in

bar

→Lo

wes

t set

tabl

e pr

essu

re 2

) in

bar →


Inle

t pre

ssur

e in

bar

→


Bypa

ss p

ress

ure

1) in

bar

→Lo

wes

t set

tabl

e pr

essu

re 2

) in

bar →


Inle

t pre

ssur

e in

bar

→



Low

est s

etta

ble

pres

sure

in b

ar →


Inle

t pre

ssur

e in

bar

→



Inle

t pre

ssur

e in

bar

→

Low

est s

etta

ble

pres

sure

in b

ar →

1)

2)

1)

2)

RE 21 050/02.99


Seal kits for cartridge valves type LC...Nominal size Material no.

NBR seals FKM seals16 00313104 0031310725 00313105 0031310832 00313106 0031310940 00873022 00873025

Nominal size Material no.NBR seals FKM seals

50 00873023 0087302663 00873024 0087302780 00314058 00314067100 00314059 00314068

Compression springs for cartridge valves type LC...NS Spring dimensions Cracking pressure Material

in mm in bar no.

10.2/1.3 x 40.5/8.0 2.0 0006274710.0/1.6 x 38.2/9.0 3.0 00062753

16 9.8/1.7 x 38.0/9.0 4.0 000627549.7/1.9 x 35.7/8.5 5.0 000627579.2/2.4 x 60.5/14.5 8.0 1) 00082073

15.3/2.25 x 55.0/8.0 2.0 0006276214.9/2.7 x 53.4/8.5 3.0 00062764

25 14.7/2.8 x 53.5/8.5 4.0 0006282014.6/3.0 x 52.5/8.5 5.0 00062819

14.1/3.5 x 78.5/12.0 8.0 1) 0008207219.6/2.8 x 69.5/7.5 2.0 0006281319.2/3.2 x 71.0/8.5 3.0 00062783

32 19.1/3.4 x 72.0/9.5 4.0 0006281019.1/3.5 x 72.8/9.0 5.0 0006280518.5/4.0 x 109/14.5 8.0 1) 00082071

NS Spring dimensions Cracking pressure Materialin mm in bar no.

25.9/4.25 x 63.0/6.0 2.0 0020667540 25.7/4.5 x 68.5/6.0 4.0 00206673

24.8/5.3 x 105.0/10.0 8.0 1) 0020667133.2/5.0 x 82.0/5.5 2.0 00206684

50 32.8/5.3 x 92.0/6.5 4.0 0020668131.7/6.5 x 137.0/10.5 8.0 1) 0020668040.6/6.5 x 108.0/7.0 2.0 00206690

63 40.7/6.5 x 127.5/7.5 4.0 0020669238.6/8.5 x 183.5/11.5 8.0 1) 00206689

80 48.5/8 x 138/7.5 2.0 0001235349/8 x 152.5/7.5 4.0 00024113

100 52.3/9.5 x 176/9.5 2.0 0001238552.3/9.5 x 195.5/9.5 4.0 00024483

1) These springs require an additional installation length.When using standard control covers an additional sandwichplate type LFA..D22... must be used.

Exception:Control cover type “D“ can be replaced by type LFA..D8-../F (nosandwich plate required).


RE 21 050/02.99

LFA A... B...

4

6

7

A...

B...8

5

General notes on the ordering details for control covers

1 2 3 4 5 6 7 8 9

Nominal size Type 1) Control Series Pressure rating in bar Seal Pagetype for nominal sizes material

16 25 32 40 50 63 80 100 16 to 32 40 to 100

• • • • • • 7X

• • 6X

025 025• • • • • • • • DB 050 050 18 to 20

100 100

200 200• • • • • • • • DBW 315 315 21 to 25

420 400

025; 050;• • • • • DBS 100; 200; 21 to 25

315; 400

025 025050 050

• • • • • • • • DBU2A 100 100 29 to 32

• • • • • • • • DBU2B 200 200 29 to 32

315 315420 400

• • • • • • DBE 38

025; 050; 025; 050;• • • • • • • • DBEM 100; 200; 100; 200; 39 to 42

315; 420 315; 400

For o

rder

ing

deta

ils, s

ee p

ages

giv

ing

deta

ils o

f the

indi

vidu

al c

over

var

iatio

ns

DB2DBmax DB1

Types of adjuster for pressure relief valves

1 = Rotary knob2 = Hexagon with protective cap3 = Locable rotary knob with scale

(H-lock to automotive industry standards)4 = Rotary knob with scale, not lockable

Series7X = Series 70 to 79 and

6X = Series 60 to 69

(unchanged installation and connection dimensions)

Pressure ratingsDependent on size and permissible working pressureof the pilot valve. For further details see orderingdetails for the control cover.

Pressure data for DB1, only required for types DBU2and DBU3D

Pressure data for DB2, only required for types DBU3DOrdering example for type DBU3D…/315* A 100 B 200 (DB max. /DB1/DB2)*DB max. always first

1) For functions, see selection table on page 15

• = available

26 to 28• • • • • • • • DBWD

33 to 37• • • • • • • • DBU3D

The control covers are always fitted with a, optimised on our test rig,standard orifice. Orifice details are therefore not required in the typecode. Deviating operating conditions could make it necessary to matchthe orifice size. The orifices are of the threaded type.

Orifice as shown within the main symbol


RE 21 050/02.99


Pressure fluid mineral oil (HL, HLP) to DIN 51 524 1);fast bio-degradable pressure fluids toVDMA 24 568 (also see RE 90 221); HETG (rape seed oil) 1);HEPG (polyglycole) 2); HEES (synthetic ester) 2);other pressure fluids on request


– 20 to + 80 tor FKM seals


Degree of contamination Maximum permissible degree of contamination of the pressurefluid is to NAS 1638 class 9. We, therefore recommend a filterwith a minimum retention rate of ß10 ≥ 75.

Max. operating pressure bar 420 Attention: pmax of the pilot control valve is to be taken into account!


1) suitable for NBR and FKM seals2) only suitable for FKM seals

General notes on the ordering details for control covers: pilot control valve (max. operating pressure)

1) Possible pressure stages: 25, 50, 100, 200, 315, 4202) Possible pressure stages: 25, 50, 100, 200, 315, 4003) Possible pressure stages: 50, 100, 200, 315, 350

1 = G 1/4 threaded connection T; special poppet

Pilot control valve Control cover Max. operating pressure in barY, T

Type Catalogue NS Type X For pressuresheet no. control Static

DBD. 2 K2X/… 1) on request 16 to 32 DB, DBW, DBWD, 420 315 •

DBD. 6 K1X/… 2) 25 402 40 to 63 DBU2., DBU3D, 400 315 •

DBD. 10 K1X/… 2) 25 402 80, 100 DBEM, DBS 400 315 •

.WE 6 … 23 178 16 to 63 DBW, DBWD, 350 210 (=); 160 (~) •

.WE 10 … 23 327 80, 100 DBU2., DBU3D 315 210 (=); 160 (~) •

M-3SEW 6 … 22 058 16 to 63 DBW, DBS 420 100 •

M-3SED 6 … 22 049 16 to 63 DBW, DBS 315 X-40 •

M-3SEW 10 … 22 075 80, 100 DBW, DBS 420 100 •

M-3SED 10 … 22 045 80, 100 DBW, DBS 315 X-40 •

DBET-5X/.G24-1 3) 29 165 16 to 32 DBE, DBEM 350 100 •

DBET-5X/.G24… 29 165 40 DBE, DBEM 350 100 •

DBET-5X/.YG24-1 3) on request 50 to 100 DBE, DBEM 350 100 •

DBETR… on request 16 to 100 on request

Incl

uded

inty

pe c

ode

Has

to b

esp

ecia

llyor

dere

d

Zero

pre

ssur

e (u

p to

≈ 2

bar

) Note:

By combining a 2-way cartridge valve with a pilot valve, various valvefunctions may be implemented.The following components may be considered with porting patternform A6 (up to NS63) and form A10 (NS 80 to 100) to DIN 24 340.Valve fixing screws are included within the control cover scope ofsupply.

Fixing screws: S.H.C.S. to DIN 912-10.9

Pilot control valve Dimensions Tightening torqueType in Nm

M-3SEW 6 … M5 x 45 8.9M-3SEW 10 … M6 x 40 15.5M-3SED 6 … M5 x 50 8.9

M-3SED 10 … M6 x 40 15.5

Pilot control valve Dimensions Tightening torqueType in Nm

.WE 6 … M5 x 50 8.9.WE 10 … M6 x 40 15.5DBET … M5 x 30 8.9


RE 21 050/02.99

= available

BA

P Ta a b

BA

P Ta b0a b

Pilot control valves (selection table)D

irect

iona

l val

ve u

nloa

ding

DBW

DBS

DBWD

DBU2A

DBU2B

DBU3D

3WE6B9-...

M-3SE.6C...

4WE6D...

M-3SE.6U...

3WE10B9-...4WE10D...

M-3SE.6C...

M-3SE.6U...M-3SE.10C./...

M-3SE.10U./...3WE6B9-...3WE10B9-...

3WE6A-...4WE6M..

3WE10A...4WE10M...4WE6H...

4WE10H...4WE6D...

4WE10D...4WE6D...4WE10D...

4WE6H...4WE10H...

4WE6E...4WE10E...4WE6D...

4WE10D...

open

DB function

open

DB function

open

DB function

openDB function

DB function

closed

Isol

atin

g fu

ncti

on

16to32

40to63

80and100

Nom. size Type Pilotcontrolvalve

Manual pressure setting Symbols(see

page 16)

Position "a" Position "b"

Without directional valve

DB function

open

DB function

open

DB function

open

DB function

open

closed

DB function

open

DB1 function

open

open

DB1 function

DB1 function

DB max. function

open

DB max. function

DB1 function

without max. pressure safety limitation

with max. pressure safety limitation

Proportional pressure settingversion

Open = bypass circuitClosed = cartridge valve is hydraulically blocked

DB function = pressure relief function

Prop

orti

onal

valv

es3

pres

sure

sta

ges

2 pr

essu

re s

tage

s

DB max. function

DB1 function

DB2 function

Position "a" Position "0" Position "b"

DBE

DBEM

DBET-5X/...

DBET-5X/...

With directional valve

1DB

2 3

3

4

5

6

7

8

9

RE 21 050/02.99


F**X

X

A

YB

X** TP T

A B

D**

F**

X

X

A

Y

Y

B

X**

P**

T

a

P T

A B

D**

F**

X

A

Y

Y

B

a

X

A**

P T

A

F**

X

A

YB

X

P**B

D**Y

F**X

A

Y

Y

B

X**

B**P T

A Ba

X

F**

X

A

YB

D**P**

P T

A Ba

DB max

DB 1

B

A T

P**

F**

X

A

YB

D**P**

P T

A Ba

DB max

DB 1

A T

X**

DB 2

X

A

YB

D**P**

X**YX

X

A

YB

D**P**

X**YX

F**

P T

Symbol overview (basic symbols), pressure relief function

Valid symboles are shown in the following type descriptions!

1 2 3

4 5 6

7 8 9

LFA..DB.-../..NS16 to 100 LFA..DBW.-../..NS16 to 32 LFA..DBW.-../..NS40 to 100

LFA..DBS.-../..NS40 to 100 LFA..DBWD.-../..NS16 to 100 LFA..DBU2A.-../..NS16 to 100

LFA..DBU3D.-../..NS16 to 100 LFA..DBE-../..NS16 to 63 LFA..DBEM-../..NS16 to 100

see pages 18 to 20 see pages 21, 22 see pages 21 to 25

see pages 21 to 25 see pages 26 to 28 see pages 29 to 32

see pages 33 to 37 see page 38 see pages 39 to 42


RE 21 050/02.99

R-rings dimensions for ports X, Y (included within the scope of supply)

NS Dimensions Material no.mm NBR FKM

16 8.41 x 1.40 x 1.78 00025407 00025408

25 9.81 x 1.50 x 1.78 00017453 00017610

32 11.18 x 1.60 x 1.78 00017455 0001761140, 50 13.00 x 2.30 x 2.62 00017457 00017617

63 18.72 x 2.62 x 2.62 00024445 00024446

80 26.57 x 3.53 x 3.53 00017466 00017630

100 34.52 x 3.53 x 3.53 00017472 00017633

Seal kits for control cover type LFA..

Seal kit for LFA... Material no.

NS 16 NS 25 NS 32 NS 40NBR FKM NBR FKM NBR FKM NBR FKM

..DB..; DBW..; ..DBS....DBWD..; ..DBEM.. 00313955 00313956 00313957 00313958 00313802 00313803 00313722 00313723

..DBU2..; ..DBU3.. 00313709 00313710 00313711 00313712 00313713 00313714 00313715 00313716

DBE.. 00313701 00313702 00313703 00313704 00313705 00313706 00313707 00313708

Seal kit for LFA... Material no.

NS 50 NS 63 NS 80 NS 100

NBR FKM NBR FKM NBR FKM NBR FKM

..DB..; DBW..; ..DBS....DBWD..; 00313724 00313725 00313726 00313727 00310533 00313054

..DBU2..; ..DBU3.. 00313717 00313718 00313719 00313720 00312090

..DBE.. 00313897 00313898 00313899 00313700

..DBEM.. 00313893 00313894 00313895 00313896 00311930 00312219

M8 x 1 tapered

M8 x 1 tapered (A**, B**, P**, D**) or G 1/4 (X**, F**)

M6 tapered

D-orifices for type ..DBE.. NS 25 to 63Orifices for NS 80, 100

Other built-in orifices

Orifice thread size

Fixing screws (included within the scope of supply)

S.H.C.S. to DIN 912-10.9

NS Qty. Dimensions Tightening torque in Nm

16 4 M 8 x 45 32

25 4 M 12 x 50 11032 4 M 16 x 60 270

40 4 M 20 x 70 520

50 4 M 20 x 80 520

63 4 M 30 x 100 180080 8 M 24 x 120 900

100 8 M 30 x 120 1800

RE 21 050/02.99


F**X

X

A

YB

X** T

D**

Ø 3

2

3

82

91

4252 max

9 43

DBD.2K.

L4

L2

4

G 1

/4 /1

2H

2H

1H

3

D

X F Y

10 SW 22 SW 10 10480 max

2L1

L3

188

6; 71

10 5

H4Ø

35 Ø 4

0

0

Control cover with manual pressure adjustment

1 2 3 4 5 6 9NS 16 to 100LFA DB

Nominal size 16Nominal size 25Nominal size 32Nominal size 40Nominal size 50Nominal size 63

Nominal size 80Nominal size 100

= 16= 25= 32= 40= 50= 63= 80= 100

Series 7X

Series 6X

Adjuster typeRotary knob = 1

Hexagon with protective cap = 2

Lockable rotary knob with scale = 3(H-lock to automotive industry standards)Rotary knob with scale not lockable = 4





NS 16, 25 ,32

025 = 25 bar050 = 50 bar100 = 100 bar200 = 200 bar315 = 315 bar420 = 420 bar

NS 40, 50, 63, 80, 100


Pressure ratings

6X = Series 6X (NS 80 and 100)

7X = Series 7X (NS 16 to 63)

NS 16, 25 ,32 LFA..DB.-7X/.. NS 16, 25, 32

with NS 32

with NS 16, 25

only withversion LFA 32 DB.

1 Port X optionally as threaded port3 Locating pin4 Adjuster type "2"5 Adjuster type "1"

6 Adjuster type "3"7 Adjuster type "4"8 Space require to remove

the key

9 Name plate10 Lock nut

NSX**1)

F**1)

D**1)

H1H2H3H4L1L2L3L4

160.81.0

401715196580

36.532.5

250.81.0

40192419858549

45.5

32

1.20.850262826

10010056.553

** Orifice - Ø1) Orifice M6 tapered

Dimensions in mm

A/F 22 A/F 10


RE 21 050/02.99

SW6

124

SW19

SW30

SW32

10

94 max

204

D1/

T1

H2

H1

H3

Ø 3

5

H4

6; 75

8DBD.6K.. 4

94 max

72

4

D

XF

Y

D1/T1 2

3

X Y

L3L4L5

9

L1

L2

1

Ø 6

0

Ø 6

0

F**X

X

A

YB

T

D**Y

4

G1/

2; 1

4

H2H

1H

3

Ø 35

H4

DBD.6K..

D

XF

Y

3

X Y

90

90

9

L1

4

G1/

2; 1

4

4

94 m

ax

94 m

ax124

208

2

6; 7

Ø 60

Ø 60

5

72

1

SW6SW19

SW30SW3210

LFA..DB.-7X/..NS 40, 50, 63


NS 40, 50

NS 63

1 Port X optionally as threaded port

2 Port Y optionally as threaded port3 Locating pin

4 Adjuster type "2"

5 Adjuster type "1"6 Adjuster type "3"

7 Adjuster type "4"

8 Space required to remove key9 Name plate

10 Lock nut

NSF** 1)

D** 1)

D1H1H2H3H4 L1L2L3L4L5T1

401.21.0

G1/460283227

1256989766012

501.52.0

G1/2 68

19,5343514080105847014

632.02.5

823050

45.5180


Dimensions in mm

A/F 32

A/F 30

A/F 19

A/F 6

A/F 19

A/F 32

A/F 6

A/F 30

RE 21 050/02.99


F**X

X

A

YB

T YX**

2,5

H2

H1

H3

Ø 38

5

DBD.10K..

3

9

190

max

90 m

ax120

20

8

2

6; 7

4 68

2,5

L8

YFX

D2

YFX

H4

G1/2; 14

1 G1/2; 14

5

G1/2; 14

SW36SW30

SW19

SW6

104

Ø 60

Ø 60


NS 80, 100

LFA...DB.-6X/...NS 80, 100

1 Port X optionally as threaded port

2 Port Y optionally as threaded port

3 Locating pin


6 Adjuster type "3"

7 Adjuster type "4"

8 Space required to remove key

9 Name plate

10 Lock nut

1003.02.5300 10038515850

803.02.525010038455850

NSX** 1)

F** 1)

D2H1H2H3H4L8

** Orifice - Ø1) Orifice G 1/4 tapered

Dimensions in mm

A/F 19

A/F 30A/F 36 A/F 6


RE 21 050/02.99

P T

A Ba

P T

A

P T

A

P T

A

P T

A Ba

P T

A

P T

A

D**

F**

X

X

A

Y

P

Y

T

A B

B

X**

P**

T

a

D**

F**

X

A

Y

P

Y

T

A B

B

a

X

A**

F**

X

A

Y

P T

A

BX

P**B

D**Y

Control cover with manual pressure adjustment, with electrical unloading

1 2 3 4 5 6 9NS 16 to 100

LFANS 16NS 25NS 32NS 40NS 50NS 63

Series7X

= 16= 25= 32= 40= 50= 63

NS 80NS 100

Series6X

= 80= 100

Control cover type

For mounting a = DBWdirectional spool (NS 16 to 100)or directional poppet valve (for NS 16, 25, 32)

For mounting a directional poppet valve = DBS(for NS 40, 50, 63, 80, 100)

Adjuster type

Rotary = 1Hexagon with protective cap = 2

Lockable rotary knob with scale = 3(H-lock to automotive industry standards)

Rotary knot with scale not lockable = 4





NS 16, 25, 32


NS 40, 50, 63, 80, 100


Pressure ratings(take max. perm. pressure of pilot valve into account)

6X = Series 6X (NS 80 and 100)7X = Series 7X (NS 16 to 63)

NS 16 to 63

LFA..DBW.-7X/...NS 16, 25, 32

4WE 6 D../.. 3WE 6 B9-../.. M-3SED 6 C../350…

M-3SEW 6 C../420…M-3SED 6 U../350…M-3SEW 6 U../420…

4WE 6 D../.. 3WE 6 B9-../..M-3SED 6 U../350…M-3SEW 6 U../420… M-3SED 6 C../350…

M-3SEW 6 C../420…

LFA..DBS.-7X/...NS 40, 50, 63

LFA..DBW.-7X/...NS 40, 50, 63

RE 21 050/02.99


85 6;7

18

10480 max

Ø 3

2

Ø 4

0

3

21

98

0

SW 10SW 22

4252 max

40,5L5

L6

G 1/4 /12

L2

4

32,5

L34

L12

X

PA

T

BY

L4Ø

35

1042

3 109

H3

H1

H2

G 1

/4 /1

2

D

FX

PA

Y H4

1

DBD.2K

11 A

Control cover with manual pressure adjustment, for electrical unloading

NS 16, 25, 32

Directional spool valve . WE 6...

Directional poppet valve

M-3SEW 6 ../…

Directionalpoppet valveM-3SED 6 U

Dimensions in mm

1 Port X optionallyas threaded port

2 Port Y optionallyas threaded port

3 Locating pin

4 Adjuster type "2"


7 Adjuster type "4"

8 Space required toremove key

9 Name plate

10 Lock nut

11 Valve fixing screws are includedwithin the control cover scopeof supply


UC

NS P**1) X**1) F**1) D**1) H1 H2 H3 H4 H5 L1 L2 L3 L4 L5 L6 L7

16 1.0 0.8 1.0 0.8 40 17 15 19 28 65 80 36.5 32.5 35 7 17

25 1.0 0.8 1.0 0.8 40 19 24 19 28 85 85 49 45.5 36 8 2732 1.0 1.0 1.2 1.0 50 26 28 26 37 100 100 56.5 53 57 31 34.5

A/F 22 A/F 10


RE 21 050/02.99

32,5

SW32104

H2H

1H

3

H4

6; 75

DBD.6K..

94 max

72

D

XF

Y

3

X Y

L5

L4

L7

2

L1

L3

A

A

B AP

T

94 max

124 20

31

L3*

L6 40,5 9

11

4

1

SW30 SW19

SW6

H5

H2*

D

F

P

X

A

Ø 6

0

Ø 6

0

Ø 3

5

8

D1/T1

D1/T1

D1/

T1

PB

A/F 19


NS 40, 50 Dimensions in mm

* Dimensions for control cover LFA..DBS..** Orifice - Ø1) Orifice M6 tapered



3 Locating pin

4 Adjuster type "2"


7 Adjuster type "4"



11 Valve fixing screws areincluded within the controlcover scope of supply

LFA..DBS.-../...LFA..DBW.-7X/...

Directionalpoppet valve

M-3SEW 6 ../…UC

Dirrectionalpoppet valveM-3SED 6 U

Directional spool valve . WE 6 ...

NS A**1) P**1) F**1) D**1) D1 T1 H1 H2 H2* H3 H4 H5 L1 L3 L3* L4 L5 L6 L7

40 0.8 1.2 1.2 1.0 G1/4 12 60 46 17 32 27 40 125 62.5 69 76 68 43.5 4750 0.8 1.5 1.5 2.0 G1/2 14 68 51 19.5 34 35 50 140 67.5 80 84 74.5 51 54.5

A/F 6

A/F 30A/F 32

RE 21 050/02.99


B AP

T

4

G1/

2; 1

4

55

8250

Ø 35

45

DBD.6K..

D

X F Y

3

X Y

90

90

9

180

103

G1/

2; 1

4

4

2

A

40,571

32,5

8731

35

11

72

4

SW19

SW6

10

AB

94 m

ax

94 m

ax124

208

6; 75

SW30

SW32

Ø 60

Ø 60

1

P

F

D

A/F 6

A/F 19


NS 63 Dimensions in mm

LFA..DBW.-7X/...

LFA..DBS.-.../...

Directional poppet valveM-3SED 6 U

Directionalpoppet valve

M-3SEW 6 ../…UC




3 Locating pin

4 Adjuster type "2"


7 Adjuster type "4"


9 Name plate

10 Lock nut

11 Valve fixing screws are includedwithin the control cover scope ofsupply

Directional spool valve WE 6...

A**1) P**1) F**1) D**1)

DBW 1.0 2.0 2.5

DBS 1.8 2.0 2.0

A/F 30A/F 32


RE 21 050/02.99

P T

A Ba

P T

A

P T

Aa

F**X

A

Y

P T

A

BX

A**

Y

B**

Ba

B A

P

T

2,5

H2

H1

H3

Ø 38

DBD.10K..

3 9

2

68

2,5

YFX

D2Y

F

X

H4

G1/2; 14

1

SW36SW30SW19SW6

10

4

B A

L8

14

31 11

590 m

ax

90 m

ax120

208

6; 75

Ø 60

Ø 60

X

G1/2; 14

A

F**X

A

Y

P T

A

BX

P**

YX**

a


NS 80, 100

Dimensions in mm

4WE 10 D...M-3SED 10 U../350…M-3SEW 10 U../420… M-3SED 10 C../350…

M-3SEW 10 C../420…

3WE 10 B9...

LFA..DBS.-6X/...NS 80, 100

LFA..DBW.-6X/...NS 80, 100

Directional poppet valveM-3SED 10 U

Directional poppet valve

M-3SEW 10 ../…UC


9 Name plate

10 Lock nut




3 Locating pin

4 Adjuster type "2"


7 Adjsuter type "4"

801.23.03.53.02.525010030455275

1001.53.03.53.02.530010030515285

NSA**1)

B**1)

P**1)

X**2)

F**2)

D2H1H2H3H4L8

** Orifice - Ø1) Orifice M8 x 1 tapered2) Orifice G 1/4 tapered

Wege-Schieberventil WE 10...A/F 6

A/F 19

A/F 30A/F 36

RE 21 050/02.99


P T

A Ba

P T

A Ba b

P T

A Ba

P T

A Ba b

F**X

A

Y

Y

B

X**

B**P T

A Ba

F**X

A

Y

Y

B

X**

B**P T

A Ba

X

F**X

A

Y

Y

B

B**P T

A Ba

XD**

F**X

A

Y

Y

B

X**

B**P T

A Ba

X

Control cover with manual pressure adjustment, for isolation functions

1 2 3 4 5 6 9

NS 16 to 100

LFA DBWD

NS 16NS 25NS 32NS 40NS 50NS 63

Series7X

= 16= 25= 32= 40= 50= 63

NS 80NS 100

Series6X

= 80= 100





NS 16, 25 ,32025 = 25 bar050 = 50 bar100 = 100 bar200 = 200 bar315 = 315 bar420 = 420 bar

NS 40, 50, 63, 80, 100025 = 25 bar050 = 50 bar100 = 100 bar200 = 200 bar315 = 315 bar400 = 400 bar


Adjuster type

Rotary knob = 1

Hexagon with protective cap = 2Lockable rotary knob with scale = 3(H-lock to automotive industry standards)

Rotary knob with scale not lockable = 4

Series 6X (NS 80 and 100) = 6X

Series 7X (NS 16 to 63) = 7X

3 WE 6 A../...

4 WE 6 M../...

3 WE 6 B9-../...

LFA..DBWD.-7X/...NS 25, 32

LFA..DBWD.-7X/...NS 16

LFA..DBWD.-6X/...NS 80, 100

LFA..DBWD.-7X/...NS 40, 50, 63

4 WE 10 M...

3 WE 6 B9-../... 3 WE 10 A... 3 WE 10 B9...

3 WE 6 B9-../...


RE 21 050/02.99

Ø 3

2

3

82

90

1

4252 max

9 43 DBD.2K.4

G 1

/4; 1

2H

2H

1H

3

X F Y

10SW22SW10

10480 max

18

86; 7

1

Ø 4

0

10 5H

4Ø35

L22L1

L3

ABP

TYX

40,5L6L5

32,5

4

G 1/4; 12

L4

31L7

BA

H5

11 A

2

32,5

SW610

4

D1/

T1

H2H

1H

3

Ø 3

5

H4

DBD.6K..

72

D

X F Y

3

XY

L5

L4

L7

L1

L3

1

AP

A

B AP

T

31

L6 40,59

4

H5

B

SW19

SW30

SW32

4

D1/T12

11

5

Ø 6

0

94 max

6; 7124 20

Ø 6

0

94 max

8


NS 16, 25, 32 Dimensions in mm


NS 40, 50


For dimension table see page 28

1 Port X optionally asthreaded port

2 Port Y optionally asthreaded port

3 Locating pin


6 Adjuster type "3"

7 Adjuster type "4"8 Space required to

remove key

9 Name plate

10 Lock nut11 Valve fixing screws are included within the

control cover scope of supply

A/F 22

A/F 10

A/F 32

A/F 30

A/F 19

A/F 6

RE 21 050/02.99


G1/

2; 1

4

B AP

T

4

G1/

2; 1

4

H2H

1H

3

Ø 35

H4

DBD.6K..

D

X F Y

3

X Y

90

90

9

L1

103

1

4

2

A

40,571

32,5

8731

35

72

4; 5…711

AB

BA

P

T

2,5

H2

H1

H3

Ø 38

DBD.10K..

3 9 2

68

2,5

YFX

D2YX

H4

G1/2; 14

1 G1/2; 14SW36SW30SW19SW6

10

4

B

L8

14

41

11

90 m

ax

5

90 m

ax

120

208

6; 7X

Ø 60

Ø 60



** Orifice - Ø1) Orifice M6 tapered (NS 16...63) or M8 x 1 tapered (NS 80 and 100)2) Orifice M6 tapered (NS 16...63) or G 1/4 tapered (NS 80 and 100)

NS 16 25 32 40 50 63 80 100B**1) 1.0 1.0 1.0 1.2 1.5 1.8 3.5 3.5X**2) 0.8 0.8 1.0 3.0 3.0F**2) 1.0 1.0 1.2 1.2 1.5 2.0 2.5 2.5D**1) 1.0 2.0 2.5D1 G 1/4 G 1/2D2 250 300H1 40 40 50 60 68 82 100 100H2 19 26 46 50 55 67 67H3 15 24 28 32 34 50 45 51H4 19 19 26 27 35 45 58 58H5 28 28 37 16 20L1 65 85 100 L1 125 140 180L2 80 85 100L3 49 56.5 62.5 70L4 32.5 45.5 53 76 84L5 35 36 57 68 75L6 7 8 31 43.5 51L7 17 27 34.5 47 54.5L8 75 85T1 12 14

NS 80, 100

Directional spool valve .WE 6...

Directional spool valve .WE 10...

1 Port X optionally asthreaded port

2 Port Y optionally asthreaded port

3 Locating pin

4 Adjuster type "2"


7 Adjuster type "4"


9 Name plate

10 Lock nut


A/F 6A/F 19A/F 30A/F 36


RE 21 050/02.99

P T

A Ba b

P T

A Ba b

P T

A Ba b

F**

X

A

YB

D**P**

P T

A Ba

DB max

DB 1

B

A T

P**YX

F**

X

A

YB

D**P**

P T

A Ba

DB max

DB 1

A

A T

P**YX

F**X

A

Y

Y

B

D**P**

P T

A Ba

XDB max

DB 1

B

B A T

F**X

A

Y

Y

B

D**P**

P T

A Ba

XDB max

DB 1

A

B A T

F**

X

A

Y

Y

B

D**

P**

P T

A Ba

XDB max

DB 1

B

B A T

F**

X

A

Y

Y

B

D**

P**

P T

A Ba

XDB max

DB 1

A

B A T

Control cover with 2 manual pressure adjustments, electrically selectable

1 2 3 4 5 6 7 9NS 16 to 100

DB1DB max.





NS 16, 25 ,32025 = 25 bar050 = 50 bar100 = 100 bar200 = 200 bar315 = 315 bar420 = 420 bar

NS 40, 50, 63, 80, 100025 = 25 bar050 = 50 bar100 = 100 bar200 = 200 bar315 = 315 bar400 = 400 bar


6X = Series 6X (NS 80 and 100)7X = Series 7X (NS 16 to 63)

LFA A...NS 16NS 25NS 32NS 40NS 50NS 63

Series7X

= 16= 25= 32= 40= 50= 63

NS 80NS 100

Series6X

= 80= 100

Adjuster type (details only required for DB1)

Rotary knob = 1Hexagon with protective cap = 2Lockable rotary knob with scale = 3(H-lock to automotive industry standards)Rotary knob with scale not lockable = 4

Control cover typeDe-energised - DB1 (4 WE.. D)De-energised - open (4 WE.. H)

De-energised - DB max. (4 WE.. D) = DBU2B(see symbols)

= DBU2A

LFA..DBU2A.-7X...NS 16, 25, 32

LFA...DBU2B.-6X/...NS 80, 100

LFA...DBU2A.-6X/...NS 80, 100

LFA..DBU2B.-7X/...NS 40, 50, 63

LFA..DBU2A.-7X/...NS 40, 50, 63

LFA..DBU2B.-7X/...NS 16, 25, 32

4 WE 10 D../...4 WE 10 H../...

4 WE 6 H../...

4 WE 6 D../...

4 WE 6 H../...

4 WE 6 D../...

4 WE 10 D../...

4 WE 6 D../... 4 WE 6 D../...

RE 21 050/02.99


Ø 3

2

3

82

90

1

41

52 max

9

4

3

DBDS2K.

H4

L2

4

G 1

/4 /1

2H

2H

1H

3

D

X F Y

12

SW 22 SW 10

10480 max2

L1L3

18

86; 7

1

Ø 4

0

10 5

L4Ø

35

P

H5

ABP

TY

X

10

40,5L6L5

45

4

A

2 G 1/4 /12

AB

DB1

13

4

DBD.2K. 4, 5…7

20

40

32,5

8811

31

42

L7

11

DB max *)



Directional spool valve 4 WE 6...




3 Locating pin

4 Adjuster type "2"


7 Adjuster type "4"


9 Name plate

10 Lock nut11 Valve fixing screws M5 x 90 are included

within the scope of the control cover supply

12 Plug M6 tapered for ..DBU 2A..

13 Plug M6 tapered for ..DBU 2B..

*) For DB max. only adjuster type "2" is possible


16 1.0 0.8 1.0 0.8 40 17 15 19 28 65 80 36.5 32.5 35 7 17

25 1.0 0.8 1.0 0.8 40 19 24 19 28 85 85 49 45.5 36 8 2732 1.0 1.0 1.2 1.0 50 26 28 26 37 100 100 56.5 53 57 31 34.5

A/F 22 A/F 10


RE 21 050/02.99

32,5

SW610

4

D1/

T1H

2H

1H

3

Ø 3

5

H4

DBDS6K..

72

D

X F Y

3

XY

L5

L4

L7

L1

L3

11

A

P

B

A

B AP

T

31

L6 40,5

9

4

H5

SW19

SW30

SW32

4

D1/T1 2

45

105

11

DBD.6K.. 4, 5…7

1

40

12

13

DB1

DBmax*)20

A

32,5

SW610

4

H2H

1H

3

H4D

X F Y

3

XY

9090

87

L1

103

11

A

P

B

B AP

T31

71 40,5

9

SW19

SW30

SW32

45105

11

DBD.6K..4, 5…7

140

12

13

DB1

20DBm

ax*)

4

G1/2; 14

2G1/2; 14

35

4

Ø 35

5

6; 7

8DBDS6K..

Ø 6

094 max

124 20Ø

60

94 max

72


NS 40, 50 Dimensions in mmNS 63



11 Valve fixing screws M5 x 90 areincluded within the controlcover scope of supply

12 Plug M6 tapered for ..DBU 2A..

13 Plug M6 tapered for ..DBU 2B..*) For DB max. only adjuster type "2" is possible



3 Locating pin

4 Adjuster type "2"

5 Adjuster type "1"



Directional spool valve 4 WE 6... Directional spool valve 4 WE 6...

NS P**1) F**1) D**1) D1 H1 H2 H3 H4 H5 L1 L3 L4 L5 L6 L7 T1

40 1.2 1.2 1.0 G1/4 60 17 32 27 40 125 69 76 68 43.5 47 1250 1.5 1.5 2.0 G1/2 68 19.5 34 35 50 140 80 84 74.5 51 54.5 14

63 2.5 2.0 2.5 82 55 50 45 180

A/F 32

A/F 30

A/F 19

A/F 6

A/F 32

A/F 30

A/F 19

A/F 6

RE 21 050/02.99


B AP

T

2,5

H2

H1

H3

DBDS10K..

3

22,5

YFX

D2

Y

F

X

H4

G1/2; 14

1 G1/2; 14

4

A

46

14

31

11

6; 75

90 max

68

90 max

120 20

8

P

70

35

X

14

Ø 3

8

129

13

54

L8

70

*)DBmax

DBD.10K.. 4, 5…7

DB1

Ø 6

0

Ø 6

0

110

SW36

SW30

SW19

SW6

10

A



** Orifice - Ø1) Orifice M8 x1 tapered2) Orifice G 1/4 tapered



3 Locating pin4 Adjuster type "2"

5 Adjuster type "1"




11 Valve fixing screws areincluded within thecontrol cover scope of supply

12 PlugM8 x 1 tapered for ...DBU2A...

13 PlugM8 x 1 tapered for ...DBU2B...

*) For DB max. onlyadjuster type "2" is possible


NS P**1) X**2) F**2) D2 H1 H2 H3 H4 L8

80 3.5 3.0 2.5 250 100 30 45 52 75100 3.5 3.0 2.5 300 100 30 51 52 85

A/F 6

A/F 19

A/F 30

A/F 36


RE 21 050/02.99

P T

A B

a b

P T

A B

a b

P T

A B

a b

P T

A B

a b

P T

A B

a b

P T

A B

a b

F**

X

A

YB

D**P**

P T

A Ba

DB max

DB 1

A T

X**

DB 2

YX

P T

A Ba

DB 1

A T

DB 2

F**X

A

Y

Y

B

D**

P**

XDB max

B

P T

A Ba

DB 1 DB 2

F**

X

A

Y

Y

B

D**

P**

XDB max

B A T

Nom. size 16Nom. size 25Nom. size 32Nom. size 40Nom. size 50Nom. size 63

Nom. size 80Nom. size 100

= 16= 25= 32= 40= 50= 63

= 80= 100

Series 7X

Series 6X

Adjuster type (details only for DB1 or DB2)*)

Rotary knob = 1Hexagon with protective cap = 2Lockable rotary knob with scale = 3(H-lock to automotive industry standards)Rotary knob with scale not lockable = 4


1 2 3 4 5 6 7 8 9

NS 16 to 100





NS 16, 25, 32


NS 40, 50, 63, 80, 100



LFA DBU3D A... B...

DB2

DB1

DBmax

Series 6X (NS 80 and 100) = 6XSeries 7X (NS 16 to 63) = 7X

*) For DB1 and DB2 select the same adjuster type

4WE 6 H .. /...

4WE 6 E .. /...

4WE 6 D .. /...

4WE 10 H.. /...

4WE 10 E.. /...

4WE 10 D.. /...

LFA..DBU3D.-7X/...NS 16, 25, 32

LFA..DBU3D.-7X/...NS 40, 50, 63

LFA...DBU3D.-6X/...NS 80, 100

4WE 6 H .. /...

4WE 6 E .. /...

4WE 6 D .. /...

RE 21 050/02.99


Ø 3

2

3

82

90

1

41

52 max

9

4

3

DBDS2K...

H4

L2

4

G 1

/4 /1

2H

2H

1H

3

D

X F Y

SW 22 SW 10

10480 max

2L1

L3

18

86; 71

Ø 4

0

10 5

L4Ø

35

P

H5

ABP

TY

X

10

40,5L6L5

45

4

A

2 G 1/4 /12

AB

DB1 *)

DB max **)

4

DBD.2K. 4, 5…7

100

32,5

8811

31

42

L7

DBD.2K. 4, 5…7DB2 *)

79

21

11







3 Locating pin


6 Adjuster type "3"

7 Adjuster type "4"8 Space required to

remove key

9 Name plate

10 Lock nut11 Valve fixing screws are included

within the control cover scope ofsupply

*) for DB1 and DB2select the same adjuster type

**) For DB max. only adjuster type"2" is possible

NS P**1) X**1) F**1) D**1) H1 H2 H3 H4 H5 L1 L2 L3 L4 L5 L6 L716 1.0 0.8 1.0 0.8 40 17 15 19 28 65 80 36.5 32.5 35 7 17

25 1.0 0.8 1.0 0.8 40 19 24 19 28 85 85 49 45.5 36 8 27

32 1.0 1.0 1.2 1.0 50 26 28 26 37 100 100 56.5 53 57 31 34.5

A/F 22 A/F 10


RE 21 050/02.99

4

D1/

T1

H2

H1

H3

Ø 3

5

H4

DBDS6K..

72

D

X F Y

3

11

A

P

B

A

4

H5

DBD.6K.. 4; 5…7

1

110

DB2 *)

DBmax**)

DB1 *)

21

89

32,5

SW610

XY

L5

L4

L7

L1

L3

B AP

T

31

L6 40,59

SW19

SW30

SW32

4 D1/T1 2

45

105

11

6; 75

94 max

94 max

124 20

8

Ø 6

0

Ø 6

0



Directional spool valve 4 WE 6...1 Port X optionally

as threaded port


3 Locating pin

4 Adjuster type "2"


7 Adjuster type "4"


9 Name plate

10 Lock nut

11 Valve fixing screws are includedwithin the control cover scopesupply

*) For DB1 and DB2select the same adjuster type

**) For DB max. only adjustertype "2" is possible


NS P**1) F**1) D**1) D1 H1 H2 H3 H4 H5 L1 L3 L4 L5 L6 L7 T1

40 1.2 1.2 1.0 G1/4 60 17 32 27 40 125 69 76 68 43.5 47 12

50 1.5 1.5 2.0 G1/2 68 19.5 34 35 50 140 80 84 74.5 51 54.5 14

A/F 32

A/F 30A/F 19

A/F 6

RE 21 050/02.99


32,5

SW610

4

G 1

/2; 1

455

8250

Ø 3

5

45,

72

D

X F Y

3

XY

90

90

87

180

103

11

A

P

B

A

B AP

T

31

71 40,5

SW19

SW30

SW32

45

105

11

DBD.6K.. 4; 5…7

1

110

DB2 *)

94 max

94 max

124 20

DB1 *)

21

89

DBm

ax**

)

G1/

2; 1

4

4

2

DBD.6K.. 4; 5…7

DBDS6K.. 4

35

9

6; 75 8

Ø 6

0

Ø 6

0





NS

P**1)

F**1)

D**1)

63

2.52.0

2.5



3 Locating pin

4 Adjuster type "2"


7 Adjuster type "4"


9 Name plate

10 Lock nut




A/F 32

A/F 30

A/F 19

A/F 6


RE 21 050/02.99

B AP

T

2,5

H2

H1

H3

DBDS10K..

3 2

2,5

YFX

D2

Y

F

X

H4

G1/2; 141 G1/2; 14

4

B A

46

14

31

1190 max

68

90 max

120 20

P

150

35

X

14

Ø 3

8

54

L8

70

DBmax **)

DBD.10K.. 4, 5…7

115

9

DB2 *)

DB1 *)

SW6

SW19

SW30SW36

110

10

5

Ø 6

0

6; 7 8

Ø 6

0



** Orifice - Ø1) Orifice M8 x1 tapered2) Orifice G 1/4 tapered



3 Locating pin

4 Adjuster type "2"

5 Adjuster type "1"








NS P**1) X**2) F**2) D2 H1 H2 H3 H4 L880 3.5 3.0 2.5 250 100 30 45 52 75

100 3.5 3.0 2.5 300 100 30 51 52 85

A/F 6

A/F 19

A/F 30A/F 36

RE 21 050/02.99


–

32,5

4

D1/

T1

H2

H1

H3 D

1/T1 H

4

D

XF

Y

3

XY

L4

L6

9

L1

L3

1

P

B AP

T

31

L5 40,5 NG 40, 50, 63

4

11 14

9NG 16, 25, 32L2

2

2

X

A

YB

D**P**

X**YX

14

X

A

YB

D** P**

X**YX

14

X

A

YB

D**

B**

F**YX

P**

14

D1/

T1

H2

H1

H3 D1/

T1

H4

D

X F Y

1

B

P

50

146

L5

39,515

Control cover for electrical-proportional pressure adjustment, without maximum pressure limitation

1 2 3 5 9NS 16 to 63

LFA DBE 7XNS 16NS 25NS 32

= 16= 25= 32

NS 40NS 50NS 63

= 40= 50= 63


(other seals on request) Attention!

The compatibility of the seals and pressurefluid has to be taken into account!

Series 7X (NS 16 to 63) = 7X

For mounting a proportional pressure relief valvewithout electrical feedback = DBE

LFA...DBE-7X/ NG 50, 63LFA...DBE-7X/ NG 25, 32, 40LFA...DBE-7X/ NG 16

NS 16 to 40 NS 50, 63

zeropressure

** Orifice - Ø1) Orifice M6 tapered2) Orifice M6 tapered (NS16), M8 x 1 tapered (NS25 ... 63)

NS 16 25 32 40 50 63B**1) 0.8 0.8P**1) 1.0 1.0 1.0 1.5 1.0 1.0X**1) 0.8F**1) 0.8 1.0 1.2 1.5 2.0D**2) 0.8 0.8 0.8 1.0 2.0 2.5D1 G1/4 G1/4 G1/4 G1/2 G1/2 G1/2H1 40 40 50 60 68 82H2 17 19 26 30 32 30H3 15 24 28 32 34 50H4 20 19 26 30 32 40L1 65 85 100 125 140 180L2 80 85 100 125 140 180L3 36.5 49 56,5 72 80 100L4 23.5 36 43.5 53 50 80L5 7 23.5 31 43.5 51 71L6 17 27 34.5 47 54.5 74.5T1 12 12 12 14 14 14



3 Locating pin

9 Name plate


14 Prop. pressure reliefvalve type DBET-5X/...(see summary on page 14,and catalogue sheet RE 29 165)

15 Pressure relief valveNS 6 (is included within thescope of supply)

notNS 16

only NS 16

Dimensions in mm

NS 16, 25, 32

NS 40, 50, 63


RE 21 050/02.99

X

A

YB

D**P**

X**YX

14

F**

P T

14

X

A

YB

D**P**

YXF**

P T

P**14

X

A

YB

X**YX

F**

P TB**

T TAP

D**B**

B**

14

X

A

YB

D**YX

F**

P T

Control cover for electrical-proportional pressure adjustment, with maximum pressure limitation

NS 16 to 100

Nom. size 16Nom. size 25Nom. size 32Nom. size 40Nom. size 50Nom. size 63Nom. size 80Nom. size 100

= 16= 25= 32= 40= 50= 63

= 80= 100

Series 7X

Series 6X

1 2 3 5 6 9





NS 16, 25, 32


NS 40, 50, 63, 80, 100



LFA DBEM

Series 6X (NS 80 to 100) = 6XSeries 7X (NS 16 to 63) = 7X

For mounting a proportional pressure relief valveWithout electrical feedback andWith maximum pressure safety = DBEM

LFA..DBEM-7X/...NS 50, 63

LFA..DBEM-7X/...NS 40

LFA..DBEM-7X/...NS 16, 25, 32

LFA..DBEM-6X/...NS 80, 100

zeropressure

zeropressure

For item nos. see page 40

RE 21 050/02.99


32,5

4

G1/

4; 1

2

H2

H1

H3

H4

D

XF

Y

3

XY

L4

L6

L1

L3

1

P

B AP

T

31

L5 40,5

11 14

9

L2

42Ø

35

L7 2G1/4; 12

H5

DBDS2K.. 4

SW10

SW22 10

2NS 16, 25, 32 Dimensions in mm


** Orifice - Ø1) Orifice M6 typered

Ports T and Y - zero pressure1 Port X optionally

as threaded port


3 Locating pin

4 Adjuster type "2"9 Name plate

10 Lock nut

11 Valve fixing screws are includedwithin the control cover scopeof supply

14 Proportional pressure relief valvetype DBET-5X/…–13)

(see summary on page 14, alsocatalogue sheet RE 29 165)

3) 1 = G 1/4 threaded port T,special poppet


16 1.0 0.8 1.0 0.8 40 17 15 19 28 65 80 36.5 32.5 7 17 35

25 1.0 0.8 1.0 0.8 40 19 24 19 28 85 85 49 45.5 8 27 36

32 1.0 1.0 1.2 1.0 50 26 28 26 37 100 100 56.5 53 31 34.5 57

A/F 22

A/F 10


RE 21 050/02.99

32,5

4

G1/

4; 1

2

H2

H1

H3

H4

D

XF

Y

3

XY

L4

L6

L1

L3

1

P

B AP

T

31

L5 40,5

11 14

H5

L7

4

Ø 3

5

72

DBDS6K..4

9

SW6

SW19

SW30

SW32

10

G1/4; 12 2

4

G1/

2; 1

4

H2

H1

H3

H4

D

XF

Y

1 5

0

146

51

39,5

H5

72

DBDS6K.. 43

G1/2; 14 2

15


Control cover for electrical-proportional pressure adjustment, with maximum pressure limitaion

NS 50



3 Locating pin

4 Adjustment type "2"



14 Proportional pressure relief valvetype DBET-5X/…G24 (NS 40)type DBET-5X/…Y G24-13) (NS 50)(see summary on page 14, andcatalogue sheet RE 29 165)

15 Pressure relief valve NS 6(is included within the scope ofsupply)



NS B**1) P**1) F**1) D**1) H1 H2 H3 H4 H5 L1 L3 L4 L5 L6 L7

40 1.5 1.2 1.0 60 20 32 27 40 125 69 76 43.5 47 68

50 0.8 1.5 2.0 68 19.5 34 35 50 140 80 84 51 54.5 74.5

A/F 30 A/F 6

A/F 32A/F 19

RE 21 050/02.99


2,5

H2

H1

H3

40,5

DBDS10K..3 9 2

2,5

YFX

D2 YX

H4

G1/2; 141 G1/2; 14 4

B

46

1431

15

X

PD

TA

B

P

70

54 35

L8

806

3116

,5

14

95,5

115 3514

32,5

4

G 1

/2; 1

4

H2H

1H

3

H4D

X F Y

3

XY

90

90

87

L1

103

11

B AP

T

71 40,5

1

4

DBDS6K..4

35

G1/2; 14 2

9

50

72

15 SW6

SW19

SW30

SW32

10

71146

39,5 Ø 35

31



NS 80, 100

** Orifice - Ø1) Orifice M6 tapered (NS63) orifice M8 x 1 tapered (NS80, 100)2) Orifice M6 tapered (NS63) orifice G 1/4 tapered (NS80, 100)



3 Locating pin

4 Adjuster type "2"9 Name plate

10 Lock nut


14 Proportional pressure relief valvetype DBET-5X/…Y G24-13)

(see summary on page 14, andcatalogue sheet RE 29 165)

15 Pressure relief valve NS 6(is included within the scope of supply)


NS B**1) P**1) X**2) F**2) D**1) H1 H2 H3 H4 D2 L1 L863 0.8 2.0 2.5 82 55 50 45 180

80 0.8 1.0 3.0 2.5 100 30 45 52 250 75

100 0.8 1.0 3.5 3.0 100 30 51 52 300 85

A/F 6

A/F 19

A/F 30

A/F 32


RE 21 050/02.99

B

A

B

A

X YX** F**

Pressure reducing function

Ordering details: pressure reducing cartridge valve (without associated control cover LFA..DB..)

No code = NBR sealsV = FPM seals

(other seals on request) Attention!

The compatibility of the seals and pressurefluid has to be taken into account!

7X = (NS 16 to 63) Series 70 to 79(70 to 79: unchanged installation and connection dimensions)

E = Spool without fine control grooves

Nominal size 16 = 16Nominal size 25 = 25Nominal size 32 = 32Nominal size 40 = 40Nominal size 50 = 50Nominal size 63 = 63

Closing pressure approx. 0 bar (without spring) = 00Closing pressure approx. 2 bar = 20Closing pressure approx. 3 bar = 30 1)

Closing pressure approx. 4 bar (standard spring) = 40Closing pressure approx. 5 bar = 50 2)

Closing pressure approx. 8 bar = 80 3)

LC DR E 7X


1) Closing pressure 3.0 bar only for NS16 for mounting a pilotoperated pressure relief valve type DBC . -5X/…SO187 (seecatalogue sheet RE 25 802)

2) Only for NS 16, 25 and 323) Special installation room required (see page 47)

Symbol: cartridge valves

Pressure fluid mineral oil (HL, HLP) to DIN 51 524 1);fast bio-degradable pressure fluids toVDMA 24 568 (see also RE 90 221); HETG (rape seed oil) 1);HEPG (polyglycole) 2); HEES (synthetic ester) 2);other pressure fluids on request


– 20 bis + 80 for FKM seals


Degree of contamination maximum permissible degree of contamination of the pressurefluid is to NAS 1638 class 9. We, therefore recommend a filterwith a minimum retention rate of ß10 ≥ 75.

Max. operating pressure – Ports A and B bar 315

Max. flow (recommeded) NS 16 NS 25 NS 32 NS 40 NS 50 NS 63

– LC..DR20.../.. L/min 100 200 300 750 1000 1600

– LC..DR40.../.. L/min 150 300 450 1000 1300 2000


1) suitable for NBR and FKM seals2) only suitable FKM seals

Preferably use 5 and 8 bar springs for flow control. The usable ∆p is available on request.

Pressure reducing functionNormally open

Attention!2-way cartridge valves LC..DR... are combinedwith control covers type LFA..DB... (for orderingdetails see page 13).

Type LC..DR..

e.g.Type LFA...DB...

Type LC..DR 40...

RE 21 050/02.99


25 1750 50 75 100 125 150

5

10

158 bar

4 bar

2 bar

25 175

50

300

0

100

150

200

250

50 75 100 125 150

50 300

50

300

0 100 150 200 250

100

150

200

250

25 175

1,25

0

0,25

0,5

0,75

1,0

50 75 100 125 150

8 bar

4 bar

2 bar

50

300

0

100

150

200

250

100 200 300 400

50 300

50

300

0 100 150 200 250

100

150

200

250

0 100 200 300 400

5

10

158 bar

4 bar

2 bar

1,6

0

0,4

0,8

1,2

100 200 300 400

1,4

0,2

0,6

1,08 bar

4 bar

2 bar

Characteristic curves (measured at ν = 41 mm2/s and ϑ = 50 °C)

LC 16 DR...

LC 25 DR...

Out

let p

ress

ure

in b

ar →


Out

let p

ress

ure

in b

ar →

Pres

sure

diff

eren

tial i

n ba

r →Lo

wes

t set

tabl

e pr

essu

re in

bar

Inlet pressure in bar → Flow in L/min →

Pilo

t oil

flow

in L

/min

→

Out

let p

ress

ure

in b

ar →


Out

let p

ress

ure

in b

ar →

Pres

sure

diff

eren

tial i

n ba

r →Lo

wes

t set

tabl

e pr

essu

re in

bar

Inlet pressure in bar → Flow in L/min →

Pilo

t oil

flow

in L

/min

→

Measured at: pa = 50 bar

Measured at: pa = 50 bar


RE 21 050/02.99

600

50

300

0

100

150

200

250

100 200 300 400 500

50 300

50

300

0 100 150 200 250

100

150

200

250

15

0

5

10

600100 200 300 400 500

8 bar

4 bar

2 bar

1,6

0

0,4

2-way cartridge valves-pressure functions cartridge valves ...Ød6 1) 46 8 10 101216 20 Ød7h13 46...

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