API6D 2"~20" 150LB Non Slam Check Valve Conform to API 6D, ASME B16.34 and DIN 3202.
They are tested according to API 598, and marked as per MSS SP-25.
1. Construction is as follows:
| - Non Slam |
| - With Spring |
| - With or Without Guide |
| - Axial Flow |
| - One Piece Body |
| - Butt Weld Ends to ASME B16.25 |
| - Flanged Ends to ASME B16.5 and B16.47 A/B |
2. Main Part & Materials
| Part Names | Part Materials |
| Body | WCB | LCB | WC6 | CF8 | CF8M | CF3 | CF3M | C83600/C95800 |
| Bonnet | WCB | LCB | WC6 | CF8 | CF8M | CF3 | CF3M | C83600/C95800 |
| Disc/Ball/Wedge | WCB | LCB | WC6 | CF8 | CF8M | CF3 | CF3M | C83600/C95800 |
| Stem | F6a | F304 | F6a | F304 | F316 | F304L | F316L | C83600/C95800 |
| Seat/Seat Ring | 13%Cr | SS304 | 13%Cr | SS304 | SS316 | SS304L | SS316L | C83600/C95800 |
| 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
DN50~D1500, 2"~60"