A105/F304/F316 Thread Ends Forged Steel Check Valve Conform to ASME B16.34, and MSS-SP-118.
They are tested according to API 598, and marked as per MSS SP-25.
1. Construction is as follows:
| - Full Port or Standard Port |
| - Piston Check |
| - Ball Check |
| - Swing Check |
| - Bolted Bonnet with spiral-would gasket, threaded and seal welded bonnet and threaded and pressure seal bonnet |
| - Spring available on request |
| - Socket Weld Ends to ASME B16.11 |
| - Butt Weld Ends to ASME B16.25 |
| - Screwed Ends to ANSI/ASME B1.20.1 |
| - Flanged Ends to ASME B16.5 |
2. Main Part & Materials
| Part Names | Part Materials |
| Body | A105 | LF2 | F22 | F304 | F316 | F304L | F316L | B62 |
| Bonnet | A105 | LF2 | F22 | F304 | F316 | F304L | F316L | B62 |
| Disc/Ball/Wedge | A105 | SS304 | F22 | F304 | F316 | F304L | F316L | B62 |
| Stem | A105 | F304 | F6a | F304 | F316 | F304L | F316L | B62 |
| Seat/Seat Ring | 13%Cr | SS304 | 13%Cr | F304 | F316 | F304L | F316L | B62 |
| Packing | Graphite/PTFE |
| Gasket | SS304+Graphite/SS304+Graphite |
| Bolts/Nuts | B7/2H | L7/4 | B16/4 | B8/8 | B8M/8M | B8/8 | B8M/8M | B8M/8M |
| Suitable Medium | W.O.G etc. | HNO3, CH3OOH etc. | Sea Water etc. |
| Suitable Temperature | -29~425 °C | -46~340 °C | -46~340 °C | -196~427 °C | -196~427 °C | -196~427 °C | -196~427 °C | -29~220 °C |
3. Normal Pressure Rating
PN10~PN420, CLASS150~2500
4. Normal Size Range
DN15~DN50, 1/2"~2"