All check valves are called non-return valves, as well. These are self operating, unidirectional valves that prevents flow in reverse direction. These are suitable for vertical and horizontal position. However, in vertical position, the flow needs to be from bottom to top. Used in Petrochemicals, Oil & Gas industries, Refineries, Power plants, Fertilizers and Chemical Industries.
| Available sizes: | 1” to 24” (25mm to 600mm) |
| Pressure Rating: | 150#, 300#, 600#, 900# and 1500# |
| Design Standard: | ASME-B-16.34, BS1868, API6D |
| Testing Standard: | API598 / EN-12266/ISO-5208 |
| End Connections: | Flanged Ends to ASME-B-16.5 till 600mm Socket Weld Ends as per ASME-B-16.11 Butt Weld Ends as per ASME-16-16.25 |
| Face to Face: | BS-1868, ASME-B-16.34 |