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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 : 2022-03-04 18:16:28 >> News list
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Contact Person: Ms. TOBO

Tel: 021-31262012

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