API 6D Full Open Bolted Bonnet Swing Check Valve with Flange Ending Conform to BS1868, API 6D, ASME B16.34, They are tested according to API 598, and marked as per MSS SP-25.
1. Construction is as follows:
- Full Open, or Reduce Pore |
- Piston Check |
- Ball Check |
- Swing Check |
- Bolted Bonnet with spiral-would gasket, threaded and seal welded bonnet and threaded and pressure seal bonnet |
- With or without counterweight |
- RF Ends to ASME B16.5 or B 16.47 A/B |
- Butt Weld Ends to ASME B16.25 |
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 ~CLASS2500
4. Normal Size Range
DN50~D700, 2"~28"