2 … 6

Functional description of gas flow1. When the valves V1 and V2 are closed,

chamber A is under inlet pressure.2. A hole D in the filter housing connects

min. pressure switch with chamber A. If the inlet pressure applied to the pressure switch exceeds the incoming reference value, it switches through to the auto-matic burner control.

3. After release by the automatic burner control, valves V1 and V3 open.

The gas flows through chambers A, B and via bypass valve V3 in C of the GasMultiBloc. The ignition gas volume is adjusted by using the bypass restrictor. The pressure regulator controls the pres-sure upstream of valves V2 and V3.

4. When valve V2 is released, the gas flows directly into chamber C, the bypass valve V3 remains open.

Operating method of valve-regulator combination on valve V1A regulator, compensating for residual pressure is integrated in valve V1 (pressure regulating part).Armature 7 is not connected to the valve plate unit 3. When it opens, armature 7 pretensions compression spring (V1) 5 and releases the valve plate unit.When the valve closes, the armature acts directly on the valve plate unit.The output pressure upstream of valve V2 is defined by pretensioning the regulating spring 8 (tension spring) via setting screw 17. The output pressure acts via opening E on the working diaphragm 26 of the regulator. In regulated state, setting spring inlet pressure and pressure of working diaphragm are in force equilibrium. The compensating diaphragm ensures the fast closing function of valve V1 and a high regulating quality.

Operating method of bypass valve V3The bypass valve V3 opens at the same time as valve V1. Ignition gas flow is set by using bypass restrictor 21.

Operating method of valve V2Armature 14 of valve V2 is connected to valve plate unit 12. When it opens, armature 14 pretensions compression spring 13. The maximum valve opening can be set by limiting the armature stroke by means of the main volume restrictor 18.Min. opening (residual stroke) of valve (0.5 to 1.0 mm)The main volume restrictor is set by rotating the adjusting plate or the hydraulic brake. The fast and/or slow opening characteristic is influenced by setting fast stroke 19 at the hydraulic brake under the cover.

Closing functionWhen the supply voltage to the main valve solenoid coils is interrupted, valves V1, V3 and V2 are closed within < 1 s by the compression springs.

Electrical connection

Sectional drawing of MB-DLE...B07

Pressure taps

1 Pressure regulator2 Microfilter3 Valve V14 Connection flange5 Closing spring V1 6 Housing 7 Armature V18 Regulating spring9 Solenoid V110 Gas pressure switch (optional)

11 Electrical connection12 Valve V213 Closing spring V214 Armature V215 Solenoid V216 Solenoid housing Setting:17 - Gas pressure pa18 - Main volume19 - Fast stroke20 Hydraulic brake

21 Bypass restrictor22 Valve V323 Closing spring V324 Armature V325 Solenoid V326 Working diaphragm27 Compensation diaphragm

0 Filter cover1, 3, 4, 6 G 1/8 screw plug2 Test nipple5 M4 screwed sealing plug

3pe

0 4pa

5pBr

1 6

25pBr

4pa

V1 V2

V3

0

P1L1

P2L2

Mp N

MB-D(LE) B07

S22 / S52

V3

V1 V2

1�

1�

1�

13

12

�

�

�

3

2

1

�

1�

11

�

�

1�

2�

1�

1�

2�

2�

23

22

21

2�

2�

�1 �2�

�

�

�

�

P2L2

P1L1

MPN

1

23

� �

6 610

5 3 4 4 5

2

3 … 6

Specifications

Nominal diametersFlange with pipe threads as per ISO 7/1 (DIN 2999)

Max. operating pressure

Output pressure ranges

Media

Ambient temperature

Dirt trap

Pressure switches

Pressure regulator

Solenoid valve V1

Solenoid valve V2

Solenoid valve V3 (bypass)

Measuring/ignition gas connection

Burner pressure monitor pBr

Voltage / frequency

Electrical connection

Rating/power consumptionSwitch-on durationDegree of protectionRadio interference

Materials of gas conveying parts

Installation position

Closed position signal contact

MB-…405/407 B07Rp 1/2, 3/4and their combinations

360 mbar (36 kPa)

MB-… S22 pa: 4 mbar (0.4 kPa) to 20 mbar (2 kPa)MB-… S52 pa: 4 mbar (0.4 kPa) to 50 mbar (5 kPa)

Gases of families 1, 2, 3 and other neutral gaseous media

-15 °C to +70 °C (Do not operate MB-D below 0 °C in liquid gas systems. Only suit-able for gaseous liquid gas, liquid hydrocarbons destroy sealing materials.)

Sieve, microfilter, changing the filter is possible without removing the valve.

Types GW A5, GW A2, NB A2, ÜB A2 mountable as per DIN EN 1854.For further information, refer to Datasheet GW A2 No. 215 183 and Datasheet GW A5 No. 225 901.

Pressure regulator compensated for residual pressure, leakproof seal when switched off by means of valve V1 as per DIN EN 88 Class A. Setpoint spring permanently installed (no spring exchange possible). A vent line above roof is not required. Internal pulse tap provided.

Valve as per DIN EN 161 Class A Group 2, fast closing, fast opening

Valve as per DIN EN 161 Class A Group 2 Valve V2 design Main volume restrictor MB fast closing fast opening without MB-D fast closing fast opening with MB-DLE fast closing slow opening with MB-LE fast closing slow opening without

Valve as per DIN EN 161 Class A Group 2, with volume restrictor

For G 1/8 as per DIN ISO 228, refer to Pressure taps on page 2

Connection downstream of valve V2, pressure switch mountable on adapter laterally

50-60 Hz ,220 - 230 V AC, -15% +10%Other preferred voltages: 240 VAC, 110-120 VAC, 48 VDC, 24-28 VDC

Plug connection as per DIN EN 175301-803 for valves and pressure switches

Refer to Dimensions on page 5100%IP 54 as per IEC 529 (EN 60529)Interference degree N

Housing aluminium die castingDiaphragms, seals NBR basis, Silopren (silicone rubber)Solenoid drive steel, brass, aluminium

Solenoid vertically upright or lying horizontally as well as its intermediate posi-tions.

Closed position signal contact, type K01/1 (DIN-tested), mountable on V2

MB-…410/412 B07Rp 3/4, 1, 1 1/4and their combinations

4 … 6

407 B07

•••••

••••–•••••––

405 B07

•••••

•••••–••••––

Equipment variantsGasMultiBloc®...B07Single-stage functionMBMB-DMB-DLEMB-LEMicrofilter (standard) with sieveGas pressure switchdownstream of filterdownstream of valve V2 on adapterPressure regulatorValve V1, double seatValve V2, single seatValve V2, double seatValve V3, single seat with restrictorValve opening separatelyFlange Rp 1/2 Rp 3/4 Rp 1 Rp 1 1/4

410 B07

•••••

•••••–••–•••

412 B07

•••••

••••–•••–•••

MB-...B07 version

V1 = Valve 1V2 = Valve 2V3 = Valve 33 = Filter4 = Pressure switch, optional5 = Regulator

Mounting of VPS 504 valve proving system possibleMounting of K01/1 closed position signal contact possible

• = possible(•) = on request - = not possible

S...2 version

���������������������������1 = two A valves for main gas + regulator7 = two A valves for main gas, one A valve togetherwith V1 as internal bypass around V2 + regulator

������� �

� ��� �� ��������0 = common2 = separated

���������������������������������������

��������������� ��������������2 = 4 - 20 mbar up to 360 mbar5 = 4 - 50 mbar up to 360 mbar

�����������������������������

��������������������� ����

� �������� ��������� ��������������403 = DN 10, V2 = Single-seat valve405 = DN 15, V2 = Single-seat valve407 = DN 20, V2 = Double-seat valve410 = DN 25, V2 = Single-seat valve412 = DN 32, V2 = Double-seat valve415 = DN 40, V2 = Double-seat valve420 = DN 50, V2 = Double-seat valve

�������� ���­� ����������­ ������������� �without = (MB or MB-ZR)-D = Main volume restrictor-LE = adjustable opening behaviour-DLE = D + LE combination

without = single stageZR = double-stage with partial volume settingfirst stage

Type key of MultiBloc®

31

V1 V2

V3

5

4

5 … 6

Dimensions [mm]

Type

MB-D 405/407 B07MB-DLE 405/407 B07MB-D 410/412 B07MB-DLE 410/412 B07

a

110110140140

b

130.5130.5162.5162.5

c

151151185185

d

40404040

e

120120145145

f

50505050

g

46465555

i

100 140125160

j

185185245245

k

80808080

Weight[kg]

2.52.64.84.9

Nominal rating [VA]230 V AC; +20 °C S224646110110

S524646110110

h

115115135135

Dimensions [mm]

Volumetric flow pressure loss characteristic via bypass valve V3, restrictor open

d = Space requirement for cover of pressure switchj = Space requirement for exchanging the solenoid k = Space requirement for K01/1 closed position signal contact

∆p [m

bar]

Vn [m3/h] Luft / Air / Aria dv = 1,00°

2

3

456

1

810

20

30

40

60

80100

50

2 3 4 5 61 7 8 910

Basis + 15° C, 1013 mbar, trockenBased on + 15° C, 1013 mbar, dryBase + 15° C, 1013 mbar, secBase + 15° C, 1013 mbar, secco

0,1 0,2 0,3 0,4 0,5 0,6 0,8

2 3 4 5 61 7 8 9100,2 0,3 0,4 0,5 0,6 0,8

MB-

D(LE

) 410

/ 41

2 By

pass

V3

MB-

D(LE

) 405

/ 40

7 By

pass

V3

Vn [m3/h] Erdgas/Natural gas/Gaz Naturel/Gas metano dv = 0,65°

b

a

cd

f

j

gi

h

e

k

2 … 6

P1L1

P2L2

MpN

P1L1

MpN

Functional description of gas flow1. When the valves V1 and V2 are

closed, chamber A is under inlet pressure.

2. A hole D in the filter housing con-nects min. pressure switch with chamber A. If the inlet pressure ap-plied to the pressure switch exceeds the incoming reference value, it switches through to the automatic burner control.

3. After release by the automatic burn-er control, valves V1 and V2 open. The gas flows through chambers A, B and C of the GasMultiBloc.

Operating method of valve-regulator combination on valve V1A regulator, compensating for residual pressure is integrated in valve V1 (pres-sure regulating part). Armature 7 is not connected with valve plate unit 3. When it opens, armature 8 pretensions compression spring (V1) 5 and releases the valve plate unit.When the valve closes, the armature acts directly on the valve plate unit.The output pressure upstream of valve V2 is defined by pretensioning regulat-ing spring 8 (tension spring) via setting screw 17.The output pressure acts via open-ing E on the working diaphragm 21 of the regulator part. In regulated state, setting spring inlet pressure and pres-sure of working diaphragm are in force equilibrium.The compensating diaphragm 22 en-sures the fast closing function of valve V1 and a high regulating quality.

Operating method of valve V2The armature 14 of valve V2 is con-nected to valve plate unit 12. When it opens, armature 14 pretensions the closing spring 13. The max. valve open-ing can be set by limiting the armature stroke by means of the main volume restrictor 18.Min. opening (residual stroke) of valve (0.5 to 1.0 mm)The main volume restrictor 18 is set by rotating the adjusting plate or the hydraulic brake 20. The fast and/or slow opening characteristic is influenced by setting fast stroke 19 at the hydraulic brake under the cover.

Closing functionWhen the supply voltage to the solenoid coils of valves V1 and V2 is interrupted, they are closed within < 1 s by the compression springs.

Electrical connection

Sectional drawing of MB-DLE...

Pressure taps

Setting:17 - Gas pressure pa18 - Main volume19 - Fast stroke20 Hydraulic brake21 Working diaphragm22 Compensation diaphragm

1 Pressure regulator2 Microfilter3 Valve V14 Connection flange5 Closing spring V16 Housing7 Armature V18 Regulating spring

9 Solenoid V110 Gas pressure switch11 Electrical connection12 Valve V213 Closing spring V214 Armature V215 Solenoid V216 Solenoid housing

0, 1, 2, 3, 4, 5 screw plug G 1/8

S 20/S 50

2pe4pBr

2pe3pa

4pBr

51

S 22/S 52

P1L1

P2L2

MpN

P1L1

MpN

P1L1

P2L2

MpN

P1L1

MpN

0 3pa

23 4234

15 5

0

V2V1

V1 V2

16

15

14

13

12

6

5

4

3

2

1

7

10

11

8

9

19

20

18

p1 p2

17

21

22

A

B

C

D

E

P1L1

MPN

2

1

P2L2

P1L1

MPN

1

23

3 … 6

Specifications

Nominal diametersFlange with pipe threads as perISO 7/1 (DIN 2999)

Max. operating pressure

Output pressure ranges

Media

Ambient temperature

Dirt trap

Pressure switches

Pressure regulator

Solenoid valve V1

Solenoid valve V2

Measuring / Ignition gas connection

Burner pressure monitor pBr

Voltage / Frequency

Electrical connection

Rating / Power consumptionSwitch-on durationDegree of protectionRadio interference

Materials of gas conveying parts

Installation position

Closed position signal contact

MB-D… 420 B01Rp 1, 1 1/4, 1 1/2, 2and their combinations

MB-D… 415 B01Rp 1, 1 1/4,1 1/2, 2and their combinations

360 mbar (36 kPa)

MB-… S20/S22 pa: 4 mbar (0.4 kPa) to 20 mbar (2 kPa)MB-… S50/S52 pa: 20 mbar (2 kPa) to 50 mbar (5 kPa)

Gases of families 1, 2, 3 and other neutral gaseous media

-15 °C to +70 °C (Do not operate MB-D below 0 °C in liquid gas systems. Only suitable for gaseous liquid gas, liquid hydrocarbons destroy sealing ma-terials.)

Sieve, microfilter, changing the filter is possible without removing the valve.

Types GW…A5, ÜB…A2 / NB…A2 to DIN EN 1854 may be attached. For further information, refer to Datasheets 5.02 and 5.07 “Pressure Switches for DUNGS Multiple Actuators”

Pressure regulator compensated for residual pressure, leakproof seal when switched off by means of valve V1 as per DIN EN 88 Class A.Setpoint spring permanently installed (no spring exchange possible). A vent line above roof is not required. Internal pulse tap provided.

Valve as per DIN EN 161 Class A Group 2, fast closing, fast opening

Valve as per DIN EN 161 Class A Group 2

Valve V2 design Main volume restrictor MB fast closing fast opening without MB-D fast closing fast opening with MB-DLE fast closing slowly opening with MB-LE fast closing slowly opening without

For G 1/8 as per DIN ISO 228, refer to Pressure taps on page 2

Connection downstream of valve V2, pressure switch mountable on adapter laterally

50 - 60 Hz 220 - 230 V AC -15 % +10 %Other preferred voltages: 240 VAC, 110 - 120 VAC, 48 VDC, 24 - 28 VDC

Plug connection as per DIN EN 175301-803 for valves and pressure switches

at 230 V AC; +20 °C: refer to Dimensions on page 5100%IP 54 as per IEC 529 (EN 60529)Interference degree N

Housing aluminium die castingDiaphragms, seals NBR basis, Silopren (silicone rubber)Solenoid drive steel, brass, aluminium

Solenoid vertically upright or lying horizontally as well as its intermediate posi-tions.

Closed position signal contact, type K01/1 (DIN-tested), mountable on V2

4 … 6

P1L1

P2L2

MpN

P1L1

MpN

420 B01

•••••

•••••••••••

415 B01

•••••

•••••••••••

Equipment variantsGasMultiBloc®...B01Single-stage functionMBMB-DMB-DLEMB-LEMicrofilterGas pressure switchdownstream of filterdownstream of valve V2 on adapterPressure regulatorValve V1, double seatValve V2, double seatValves opening togetherValves opening separatelyFlange Rp 1 Rp 1 1/4 Rp 1 1/2 Rp 2

• = possible(•) = on request - = not possible

MB-...B01 version

V1 = Valve 1V2 = Valve 23 = Filter4 = Pressure switch, optional5 = Regulator

Mounting of VPS 504 valve proving system possibleMounting of K01/1 closed position signal contact possible

For further information, refer to Datasheet 7.04: GasMultiBloc Modular System, Accessories, Additional equipment

V1 5 V243

���������������������������1 = two A valves for main gas + regulator7 = two A valves for main gas, one A valve togetherwith V1 as internal bypass around V2 + regulator

���������

��������������������0 = common2 = separated

���������������������������������������

��������������� ��������������2 = 4 - 20 mbar up to 360 mbar5 = 4 - 50 mbar up to 360 mbar

�����������������������������

��������������������������

�����������������������������������403 = DN 10, V2 = Single-seat valve405 = DN 15, V2 = Single-seat valve407 = DN 20, V2 = Double-seat valve410 = DN 25, V2 = Single-seat valve412 = DN 32, V2 = Double-seat valve415 = DN 40, V2 = Double-seat valve420 = DN 50, V2 = Double-seat valve

������������������������������������������without = (MB or MB-ZR)-D = Main volume restrictor-LE = adjustable opening behaviour-DLE = D + LE combination

without = single stageZR = double-stage with partial volume settingfirst stage

Type key of MultiBloc®

Filter element can be removed. A suitable GF.../1 gas filter must then be fitted upstream.

5 … 6

Dimensions [mm]

Type

MB-D 415 B01MB-DLE 415 B01MB-D 420 B01MB-DLE 420 B01

S20

55558080

S22

96 96100100

Nominal rating[VA]~(AC) 230 V AC; +20°C Weight

[kg]

6.56.67.77.8

S50

55558080

S52

96 96100100

Rp

Rp 1 - 2Rp 1 - 2Rp 1 - 2Rp 1 - 2

Opening time

< 1 s< 20 s< 1 s< 20 s