
One-way (non-return) valve for 50 mm (2") lines — flow pushes it open, reverse flow shuts it automatically; no handle. Swing (hinged flap) design, works in horizontal or vertical lines. Cast iron construction, Flanged IS 1538 (IS 5312 on 50/65) ends. Tested to 2.4 MPa shell / 1.6 MPa; up to 80°C. For water. IS 5312; renewable bronze seat, rubber-faced flap.
| Orientation | Horizontal or vertical |
| Mechanism | Swing (hinged flap) |
| Ends / flange std | Flanged IS 1538 (IS 5312 on 50/65) |
| Shell test | 2.4 MPa |
| Seat test | 1.6 MPa |
| Max temp | 80°C |
| Fluids | Water |
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