20. For medium and low pressure check valves with DN greater than 200mm and less than 1200mm, wear-free spherical check valves should be used;
21. For low pressure check valves with DN greater than 50mm and less than 2000mm, butterfly check valves and diaphragm check valves should be used;
22. For pipelines that require less water hammer impact or no water hammer when closed, slow-closing swing check valves and slow-closing butterfly check valves should be selected.
Material | Body | Ductile Iron,QT450 |
Screw | SS304 Stainless Steel | |
Gasket | NBR | |
End Connections | Flange × Flange | |
Flanges | ANSI150LB, BS 5404,GB Standard | |
Available Size | DN50 thru DN300 (3" thru 12") | |
Type | Ball Type | |
Working pressure | 16 bar | |
Color | Red/Blue | |
Media | Water | |
Hot Tags: flexible disc check valve with flange, China, manufacturers, suppliers, wholesale, price, Ball Type Check Valve, Ductile Iron Ball Check Valve, Swing Type Check Valve, Flange End Swing Check Valve, Ductile Iron Swing Check Valve, Valves Systems
1) Flange End:ANSI150LB/BS5404;
2) Screw Material:SS304 Stainless Steel;
3) Gasket Material:DUCTILE IRON;
4) Body Material:Ductile Iron,QT450;
5) Disc Material:Ductile Iron,QT450,COVERD BY NBR;
6) Surface Finishing:Epoxy Red or Blue.











