tilting disk check valves with counter weight -...

www.mirab-valves.com

Manufacturer of Industrial Valvesa n d R e l e v a n t E q u i p m e n t

Tilting Disk Check Valves

with Counter Weight

Tilting Disk Check Valveswith Counter Weight

3

Tilting-Disc Check Valves with Counter Weight

Size: DN 100 - 1800 mm

Pressure: PN 10- 40 bar

Face to face: DIN EN 558-1 series 14 (DIN3202-F4)

Flanges: DIN EN 1092-2 (DIN 2501)

Product features:

Eccentric disc operation, Body seat ring made of corrosion resistant steel, Disc seat ring is corrosion resistant

steel with seal for reliable sealing, Possibility for installation of weight and lever on both sides. Low weight for

short length of the valves , Maintenance free , Rugged body with disc suitable for fluid flow Disc and shaft are

connected by key , Seat ring rolled into the body.

Product features:

This types of valve is used in water supply installations to stop the fluid flow in the opposite direction. The valve

closing speed can be adjusted by changing the weight position along the lever. All of the seals of the valve

bearing can easily be replaced. The standard seal material is NBR for up to 70°C (for gas up to100°C). For

higher temperature and other fluids suitable seal material is available on request.

Corrosion protection:

Body and disc are fully coated with blue electrostatic powder coating with minimum 250 micron thickness.

Application:

Suitable for fluids such as water & waste water up to 70°C & gas up to 100°C.

Nominal PressurePN (bar)

Test Pressure

10

16

25

40

Shell Test

17

25

38

60

Closure Test

11

18

28

44

Hydrostatic test Pressure (bar) according to DIN EN 12266-1

Design:

Reliable design.

Disc & shaft connection by key.

Bended stainless steel body seat ring.

Low weight as short pattern.

Possibility for installation of weight and lever on both sides.

Maintenance free.

Rugged body with disc suitable for fluid flow.

Eccentric disc operation.

Disc seat ring is corrosion resistant with O-ring included.

MB-0717

1611

06

26

27

07

29

22

03

01

34

04

28

30

4

Part List

33

32

31

17

18

19

20

25

2423

12

14 0915 1013 0811


MB-0717


5

Body Seating Surface

Optional Design #1

Welded Directlyonto the Body

Optional Design #2

Welded Directlyonto the Body

Normal Design

Separate Seat RingPressed into the Body

02

21

05

Body

Body Seating Surface

Bearing Bush

Disk

Disk Seat

Shaft, Lever End

Shaft, Free End

Shaft Sealing

O-ring

O-ring

Spacer Ring

Bearing Cover

O-ring

Washer

Hexagonal Bolt

Cap

Internal Key

Key Retainer

Hexagonal Bolt

Counter Socket Screw

O-ring

Lever

Key

Spacer Ring

Cir clips

Limit Stop

Socket Screw

Counter weight

Socket Screw

Socket Screw

Hexagonal Bolt

Washer

Nut

rubber

EN 1563/ EN-GJS-400-15٭

18Cr- 8Ni

ASTM B148 UNS 95200

EN 1563/ EN-GJS-400-15٭

DIN EN 10088-3/ 1.4021

DIN EN 10088-3/ 1.4021

DIN EN 10088-3/ 1.4301

BRASS

EN 1563/ EN-GJS-400-15٭

EN 1563/ EN-GJS-400-15٭

DIN EN 10088-3/ 1.4057

DIN EN 10088-3/ 1.4301

ISO 3506-1, Gr. A2, Property Class 70


ST-37

High Strength Carbon Steel-St 60

BRASS

EN 1563/ EN-GJS-400-15


EN 1563/ EN-GJS-400-15

EPDM / NBR

DIN EN 10088-3/ 1.4301

DIN ISO 898-2, Property Class 8, Zinc Plated

NBR (EPDM on Request)




DIN ISO 898-1, Property Class 8.8, Zinc Plated

Steel (FST)




ISO 898-2, Property Class 8, Zinc Plated

ISO 898-2, Property Class 8, Zinc Plated

01

02

03

04

05

06

07

08

09

10

11

12

13

14

15

16

17

18

19

20

21

22

23

24

25

26

27

28

29

30

31

32

33

34

1 2Part No. Part Name Part Material

(1) Recommended spare parts(2)Parts subjected to wear

EN-GJS-500-7 available on request. ٭

MB-0717

6

Dimensions & Weight of Tilting-Disc Check Valve

L b n

DIN EN 1092 - 2 (DIN 2501)

DIN EN 558 - 1 series 14 (DIN 3202 - F4)

PN

25

PN

16

PN

10

150100

200

150100

150100

250

200

200

300

250

250

350

300

300

400

350

350

500

400

400

600

500

500

700

600

600

800

700

700

900

800

800

1000

900

900

1000

100012001400150016001800

210190

210190

230

230

250

250

270

270

290

290

310

310

350

350

390

390

430

430

470

470

510

510

550

210190

230250270290310

350390430470510550

550630710750790870

300235

360

285220

285220

425

340

340

485

400

400

555

455

455

620

520

505

730

580

565

845

715

670

960

840

780

1085

910

895

1185

1025

1015

1320

1125

1115

1255

123014551675178519152115

2019

22

1919

1919

24.5

20

20

27.5

22

22

30

24.5

24.5

32

26.5

24.5

36.5

28

24.5

42

31.5

26.5

46.5

36

30

51

39.5

32.5

55.5

43

35

60

46.5

37.5

50

404546

47.54952

2823

28

2319

2319

31

23

23

31

28

23

34

28

23

37

28

23

37

31

28

41

34

28

44

37

31

50

37

31

50

41

34

57

41

34

44

374144445050

88 166

2002442953433864254544905546167147758279591129126913261470

12

88 166

2002442953433864254454905546167147758279591129126913261470

88

12

12

8

16

12

12

16

12

12

16

16

16

20

16

16

20

20

20

24

20

20

24

24

24

28

24

24

28

28

28

28

283236364044

1662002442953433864254544905546167147758279591129126913261470

370430

295

295

310

240180

240180

250190

660

525

515

550

470

460

490

410

400

355

350

875

770

725

770

650

620450 330 615 25.5 28 20565

450 330 640 30 31 20585

450 330 670 34.5 37 20600

1210

1050

1050

1170

116013801590170018202020

12001400150016001800

630710750790870

14851685182019302130

5760

62.56570

5050575757

3236364044

13901590171018202020

12001400

16001800

630710

790870

15301755

19752195

6974

8188

5762

6270

3236

4044

14201640

18602070

1090

950

950

990

840

840

mm mm mm mm mm mm mmDN e1

1361802172572983323684074445175986817528259871142120812971460136180217257298339375420466547605686757837

10021147122613001468

17375274

120150167209246435555758

1026126018702742328839195210

144187227270311357395435474550630716787870

10251185124813221477

18385681

1511672012312664576238551140141020523030358042495658

8914414013717520523426729334640542740539048758959357356489

144140137175205234267293346405427405390487589593573564

89144140137175205234267293346405427405390487589593573564

230150

230150

230150

230

230

230

250

250

250

300

300

300

350

350

350

400

400

400

500

500

500

600

600

600

700

700

700

800

800

800

800

800

800

80010001200120012001250

800

800

-- 135

21422624130135239445750059069576378580098711791205122213041352142262413013523944575005906957637858009871179120512221304

1352142262413013523944575005906957637858009871179120512221304

150100

150100

150100

160

160

160

180

180

180

200

200

200

225

225

225

250

250

250

300

300

300

330

330

330

390

390

390

450

450

450

550

550

550

600685800780820

1000

600

600

17375274

105144155191226383525722980118017462608308237134974

450 275

450 275

450 275

10001200120012001250

685800780820

1000

10001200120012001250

685800780820

1000

mm mm mm mm mm mm mm Kge4e3e2 ah3h2h1 Wgt.

--

19.4446994115142165215261312364406506605646695810

--

--

-

-

-

-

-

-

-

-

-

-

-

--

-

--

--

--

-

-

-

-

-

2.5

2.5

2.5

13

13

13

25

25

25

34

34

34

--

19.4446994115142165215261312364406506605646695810

3751.566.579111

3751.566.579111

3751.566.579111

--

19.4446994115142165215261312364406506605646695810

1500 750 1865 77.5 62 361750

Dimensions for working pressure 40 bars and higher as per request


MB-0717

7

Installation of Tilting-Disc Check Valves with Counter Weight


MB-0717

Horizontal pipeline:

Pos. 1

Counter weight and lever on

the right hand side of the

valve in flow direction

Pos. 2

Counter weight and lever on

the left hand side of the valve

in flow direction.

Vertical pipeline with flow direction upward:

Vertical pipeline with flow direction downward:

Note:

Normally the lever and counter weight of all non-return valves with counter weight are assembled as shown in

Pos.2. (Horizontal line) For other valve positions, the lever should be assembled according to the valve positions

as shown in the above figures.

Pos. 3

Pos. 5

Pos. 4

Pos. 6

8 MB-0717

Conditions for installation of flanged type Butterfly valve next to Tilting-DiscCheck Valve with Counter Weight and Lever

For installation of non-return valve adjacent to a butterfly valve, the weight lever of the Tilting-Disc Check Valve

must be on the left hand side in flow direction and the gearbox of the butterfly valve on the right hand side to

prevent collision of the weight lever with the gearbox of the butterfly valve.

Tilting disc Non-return

valve With counter weight

Spacer pipe Flanged type

Butterfly valve

150

200

100

250

300

350

400

450

500

600

700

800

900

1200

1000

1400

1600

1800

210 —

—

—

—

—

—

— —

— —

—

—

—

—

—

—

230

190

23

250 44

270 69 2

290 94 25

310

330

115

143

40

58

350 165 65

390 225 95

430 272 12025

470 315 15013

510 380 18025

630

710

790

870

550

—

—

150

150

150

200

225

280

300

400

500

600

650

750

900

1100

1300

1400

423

515

615

705

815

210

280

340

455

455

34

62

80

90

110

DNL

mmL1

mma

mmb

mmc

mm



9

Tilting-Disc Check Valves with Hydraulic Damping System

MB-0717

Mirab Tilting-Disc check valves with counter weight can be equipped with hydraulic damping system for adjusting

the closing time. With the damping system the opening and closing time can be reduced, and the water hammer

effect can be prevented by reducing the damping time.

Application: To provide non-slam performance in places where water return through the valve is permitted.

A flow control valve can adjust the opening and closing speed of check valve disc.

Application examples:

Water supply line with pumps installed in parallel

When the pump is turned off and the flow direction

reversed, the valve closes, and if the valve does

not have a damping mechanism, the resultant

force could damage the system. In this case, the

reverse pressure would be equal to the pump

pressure.

Water supply line with long pipe and high elevation

Pumping to high elevation.

Quick change in flow direction which results in

extensive force. In this situation the amount of

reverse pressure on the closed disk is caused by

the amount of water column.


10

Selection of Tilting-Disc Check Valves with Hydraulic Damping System

Order for Tilting-Disc check valve with damping device should contain back (or differential) pressure.

If the standard types are equipped with hydraulic damping device on one side, due to shaft dimensioning and

material, the maximum admissible back pressure is limited according to the table below:

If the Tilting-Disc Check Valve is equipped with damping device on both sides, the maximum admissible back

pressure will be doubled in the above table.

Types for higher back pressure upon request.

Illustration of tilting disc with counter weight of DN 400 and PN 10 installed in horizontal position.

Due to geometrical similarity, this graph could also be used for other valve sizes.

150 200 250 300 350 400 450 500 600 700 800 900 1000 1200

1400

to

1800

12.5 14.5 7.1 8.5 5.4 3.6 4.6 3.3 3.2 3.1 2.9 2.9 2.9 2.6 2

DN

[mm]

Maximum

admissible

back pressure

[bar]

pre

ssure

loss

ΔP

(m

m W

C)

openin

g d

egre

e φ

Fluid speed (m/s)

--- Pressure loss when the valve is fully open

MB-0717


11

Tilting-Disc Check Valves with Hydraulic Damping System Type 1

This design of Tilting-Disc check valve with damping system produce in Mirab valve as routine product.this

valve's function is very smooth & easy. Damping system works while closing & The closing time is adjustable

by move the weights on lever, also the cylinder orifice is exchangeable.

MB-0717


12

Damping system installation on body, Type 1

MB-0717

Pos. 2

The damping system & the weight are

located on right side of flow

Pos. 1


located on left side of flow

Pos. 4



Pos. 3



Pos. 6



Pos. 5




13

Mechanism and operation of Tilting-disc Check Valve with Damping Cylinder, Type 2

This type of Tilting-Disc check valve with damping system are manufactured based on request. Damping system

works in this type in open or close position. Damping system is equipped with hydraulic flow control valve which

can adjust the close or open time of easily.

Tilting-Disc Check valve in 50%

open position

Tilting-Disc Check valve in

damped open position

Tilting-Disc Check valve in

damped closed position

trave

l

dam

ped

opening zone dam

ped

clos

ed

Closed

Closing time can be adjusted to 30-seconds max. as standard, by a flow control valve.

Open

Open

Closed

Check valveFlow control valve

damped

MB-0717


14

Positions of Hydraulic Cylinder on Tilting-Disc Check Valve, Type 2

MB-0717

Horizontal pipeline:

Pos. 1

Weight and damping on

the left side of the valve

in flow direction

Pos. 2


the right side of the

valve in flow direction

Pos. 3


both sides of the valve

Vertical pipeline with flow direction upward

Pos. 6


both side of the valve

Vertical pipeline with flow direction downward:

Pos. 9


both sides of the valve

Please indicate position of damping system in your order.

Note: Normally ,Mirab products are made according to the horizontal lines.

Pos. 7

Weight and damping on the left

side of the valve in flow direction

Pos. 4

Weight and damping on the left


Pos.8

Weight and damping on the right


Pos.5

Weight and damping on the right



15

Damping time adjustment

The valve opening and closing speed can be adjusted by damping time at the flow control valve

Dam

pin

g T

ime [

s]

Valve adjustment [Turns]

If the Tilting-Disc Check Valve is equipped with mounted oleo hydraulic damping device on both sides, the flow

control valve of both oleo hydraulic damping devices must be adjusted at the same time.

CAUTION

MB-0717Mirab can change the dimensions without any notice.We are not responsible for any error in printing.

[email protected]

MIRAB Co' PRODUCTS

Butterfly Valves Family: Double Flanged Type, Short body,

Wafer Type, Lug Type ,Sea Water Type, Counter Weight &

Hydraulic Actuated Type.

Gate Valves Family: Soft-Sealing Gate Valve, Metal Seat

Gate Valve, Knife Gate Valve, Penstock Sluice Gate Valve.

Non Return Valves Family: Tilting Disc, Swing Check Valve,

Silent Check Valve, Foot Valve, Nozzle Check Valve, Flap Valve.

Air Vent Family:Single Chamber-Double Orifices Triple Function

Air Valve, Double Chambers-Double Orifices Triple Function

Air Valve, Triple Function Air Sewage Valves Single-Chamber

type, Large-Orifice Air Valve.

Control Valves Family: Automatic Control Valves, Needle

Valve, Globe Valve, Fixed Cone Free Discharge Valve, Hollow

Jet Valve, Sleeve Valve.

Hydrant Valves Family: Dry Fire Hydrant Valves (Standing &

Pit Type), Wet Barrel Fire Fighting Valve, Post Indicator Valve.

Strainers Family: Y Type, T Type, One Side Flanged Type.

Fittings Family: Dismantling Joint F1&F2, Flange, Pipe Coupling.

Accessories.

Actuators.

tilting disk check valves with counter weight -...

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