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Cast Steel Swing Check Valves Drawing

 

cast steel check valves drawing

 

Design Features of Cast Steel Swing Check Valves

A. Large-caliber check valves are provided with lifting rings for the convenience of hoisting.

B. Bolted bonnet, and the type of middle flange gasket may be class; CLASS 600 check valve may adopt pressure self-tightening seal structure.     

C. Disc stop device to prevent disc from being opened too high, thus causing failure to be closed down.     

D. Solid pin is precisely installed and provided with high inten-sity to ensure operational performance and service life of valve.

E. Rocker arm is given enough intensity. Upon being closed down, it has enough freedom for the closedown of valve disc.

F. Valve disc is given enough intensity and rigidity. Disc sealing surface may be built-up welded with metal material or inlaid with nonmental material responding to users' requests.

 

Remarks

1.Type of end connection referred to Appendix
2.Type of body and seat connection referred to Appendix  
3.Type of body and bonnet connection referred to Appendix   

 

Material List of Cast Steel Swing Check Valves

No.

Part Name

Carbon Steel

Stainless Steel

Low Temperature
Steel

1

Body

ASTM A216 GR WCB

ASTM A351 GR CF8

ASTM A352 GR LCB

2

Seat

ASTM A105

ASTM A105

ASTM A182 GR F304

3

Disc

ASTM A216 GR WCB

ASTM A351 GR CF8

ASTM A352 GR LCB

4

Arm

ASTM A216 GR WCB

ASTM A351 GR CF8

ASTM A352 GR LCB

5

Pin

ASTM A182 GR F6a

ASTM A276 TYPE 304

ASTM A182 GR F304

6

Hinge

ASTM A216 GR WCB

ASTM A351 GR CF8

ASTM A352 GR LCB

7

Gasket

Ss304

Ss304

Ss304

8

Bonnet

ASTM A216 GR WCB

ASTM A351 GR CF8

ASTM A352 GR LCB

9

Stud

ASTM A193 GR B7

ASTM A194 GR B8

ASTM A194 GR B8

10

Nut

ASTM A194 GR 2H

ASTM A193 GR 8

ASTM A193 GR 8

 

Remarks:
1. Select different materials for different working temperature and media.
2. Trim materials and recommended service coverage referred to Appendix.


 

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