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Ductile Iron Tilting Check Valve With Counterweight & Hydraulic Damper

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Ductile Iron Tilting Check Valve With Counterweight & Hydraulic Damper
Latest company news about Ductile Iron Tilting Check Valve With Counterweight & Hydraulic Damper

Body SS304 Wafer Check Valve 2'' PN10 Seat EPDM High Safety And Reliability

 

Product introduction

 

Size Range: DN100-DN2000

Pressure: PN10/16

Body Materials: Ductile Iron QT450

Seat Materials: EPDM

 

Quick Details

 

Product Name

CHECK VALVE

Material

Ductile Iron

Color

Blue

Standard

DIN GB JIS ANSI

Class

150LB(16)~600LB(2500)

Body and Ball Material

CF8 CF3 CF8M CF3M WCB PVC UPVC PP

Thread

-29~150(PTFE), -29~200( PTFE+GLASS), -29~300(J2 PPL)

Steam Seat and Gasket

PTFE

 

Features:

Applicable medium:Water,Oil, etc

Suitable temperature:0℃~80℃

Application field: Water treatment, municipal construction, drainage, power plant, etc

 

Product advantages:

 

1. QT450-10 or WCB valve body,the chemical composition and mechanical properties meet the the national standard,

material report can be provided;

2.All parts are processed by precision CNC machine tools to ensure product accuracy;

3.Excellent performance of slow closing system, not affected by the medium in the pipeline. The valve disc closes quickly

first and than slowly closes to prevent destructive water hammer;

4. Rubber seals or stainless steel hard seals, smooth opening and closing, no vibration, no noise, valve discs and other parts

can also be selected according to working conditions;

5.Valve shaft is supported by self-lubricating sleeve bearings to reduce friction and torque;

6.250μm thickness Akzo epoxy coating;

7.Each valve will be inspected for shell and seal pressure before leaving factory.

 

Stainless Steel Check Valve Application:

 

Valve is used for preventing the back-going of medium in pipelines and equipments, and the pressure of medium will bring the result of opening and closing automatically.

When the medium is back-going, valve disc will automaticaly closed to avoid accidents.

 

Stainless Steel Check Valve Test Pressure

 

Test Item

Shell Test

Seal Test

Back Seal Test

Air Seal Test

Medium

Water

Air

Unit

MPa

lbf/in2

MPa

lbf/in2

MPa

lbf/in2

MPa

lbf/in2

Pressure (Class)

150

3.1

450

2.2

315

2.2

315

0.5-0.7

60-100

300

7.8

1125

5.6

815

5.6

815

400

10.3

1500

7.6

1100

7.6

1100

600

15.3

2225

11.2

1630

11.2

1630

900

23.1

3350

16.8

2440

16.8

2440

1500

38.4

5575

28.1

4080

28.1

4080

 

Types of Valves

 

The type of disk will decide the type of valve. Most common types of Check valves are

  • Swing Type.

    • Top Hinged

    • Tilting disk

  • Lift Type

    • Piston Type

    • Ball type

  • Dual Plate Type

  • Stop Check Valve

 

Swing Check Valve

 

Ductile Iron Tilting Check Valve With Counterweight & Hydraulic Damper 0

 

The disc in a swing type valve is unguided as it fully opens or closes. This Valve operates when there is flow in the line and get fully closed when there is no flow. Turbulence and pressure drop in the valve is very low.

Disk and seat designs can be of metal to metal or metal to composite.

The angle between the seat and the vertical plane is known as the seating angle and varies from 0 to 45 degrees.

Usually, the seat angles are in the range of 5 to 7 degrees. Larger seat angles reduce the disc travel, resulting in quick closing, thus minimizing the possibility of water hammer. A vertical seat has a 0-degree angle.


The swing type valve allows full, unobstructed flow and automatically closes as pressure decreases. Usually installed in combination with gate valves because they provide relatively free flow combinations.

A basic swing type valve consists of a valve body, a bonnet, and a disk that is connected to a hinge.

 

Ductile Iron Tilting Check Valve With Counterweight & Hydraulic Damper 1

Parameter Information:
1. Executive standard:

Name

Design and manufacture

Face to face Length

End Flange

Pressure Test

Reference
standard

GB/T 12238

GB/T 12221

GB/T 17241.6

GB/T 13927

2. Material of Main Parts:

Name

17-Body

13-Disc

4-Stem

14-Seat

Material

QT450-10

QT450-10

2Cr13

EPDM

3.Dimensions:

Size

 

PN10

DN

NPT

L

D1

n-d

100

4''

190

180

8-φ19

125

5''

200

210

8-φ19

150

6''

210

240

8-φ23

200

8''

230

295

8-φ23

250

10''

250

350

12-φ23

300

12''

270

400

12-φ23

350

14''

290

460

16-φ23

400

16''

310

515

16-φ28

450

18''

330

565

20-φ28

500

20''

350

620

20-φ28

600

24''

390

725

20-φ31

700

28''

430

840

24-φ31

800

32''

470

950

24-φ34

900

36''

510

1050

28-φ34

1000

40''

550

1160

28-φ37

1200

48''

630

1380

32-φ40

1400

56''

710

1590

36-φ43

1600

64''

790

1820

40-φ49

1800

72''

870

2020

44-φ49

2000

80''

950

2230

48-φ49

 

 
Pub Time : 2022-01-19 17:23:11 >> News list
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Tel: 021-31262012

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