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Dual Plate Check Valve Wafer & Retainerless Type
Dual Plate Check Valve Wafer & Retainerless Type
Supplier Info
[China Supplier]
Contact Person : Mr. Hao Dehong
Tel : 86-411-82766443
Fax : 86-411-82766457
Product Detail
1.light weight,Spring is installed 2.Shock and noise are reduced 3.Rubber seat 4.Horizontal and vertical installation

FEATURES

Wafer type, light weight and suitable for the limited space of piping. Spring is installed inside the valve. Shock and noise are reduced by any possible water-hammer. Rubber seat ensures the perfect seal. Horizontal and vertical installation is applicable. Widely used for the basic piping, water, sewerage and various 

SPECIFICATION

DESCRIPTION

Material

DESIGN

API 594, API 6D

PRESSURE CLASS

ASME 125LB-1500LB(40A-1800A)

BODY, PLATE MATERIAL

A126,A536,A216WCB,A351CF8,CF8M,CF3,CF3M,Duplex,Monel,CA15

SPRING MATERIAL

STS316WPA,Inconel X-750

VALVE TEST

To API 598,KS B2304

FLANGES

To ASME16.5 & B16.47,KS B1511

TYPE

WAFER,LUG,DOUBLE FLANGED

 

APPLICATION

Chemicals,Power Generation,Pulp and Paper,Mining,Water and Waste Water, Oil and Gas

SPRING SELECTION GUIDE

Standard Spring

   Suitable for the line pressure of 0.298 MPa through 0.89MPa 

   without any pressure loss and the upward flow direction of 

   vertical installation.

 Low Coil Spring

   Ideal for gas with the line pressure of 0.1 MPa and under.

High Coil Spring

   Suitable for the line pressure of 0.88 MPa.

APPLICATION

Dual Plate Check Valves have been used successfully in following plants

Petroleum Refinery Oil & Gas Pipeline Pulp & Paper Mill Chemical Plant Steel Industry Shipbuilding Power Generation Water System General Industry

 ADVANTAGE

Face-to-face dimensions for Dual Plate Wafer Check Valves are about one fourth of a Swing Check Valve. Weight is as little as about 20%of the corresponding Swing Check Valve due to the compact design. Dual Plate Wafer Check Valves have a spring design to close valves more efficiently when the backflow occurs to reduce the water hammer. These valves have the lower pressure drop than Swing Check Valves because of little friction resistance. Dual Plate Wafer Check Valves are less expensive than Swing Check Valves because of the lightness an compact design. Because Dual Plate Wafer Check Valves are flangeless, they are installed between flanges. Normal installation method for horizontal flow is with the hinge pin in vertical position. Installation is available for both horizontal and vertical piping.

DESCRIPTION OF PARTS

NO

        NAME

MATERIAL

Q'TY

10K

150LB

1

BODY

FC200

A216Gr.WCB

1

2

PLATE

SCS13,BC6

A351Gr.CF8

2

3

SPRING

STS316WPA, INCONEL-X750

1-4

4

HINGE PIN

STS 304

A276-304

1

5

STOP PIN

STS304

A276-304

1

6

PLUG

SM 25C

A576 1025

4

7

BEARING

PTFE

A276-304

6-9

8

PIN STABILIZER

RUBBER

-

4

9

EYE BOLT

SS 400

1

10

SEAT

NBR,EPDM

METAL

Dual Plate Check Valve Wafer & Retainerless Type

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