Lever Operated WCB/CF8/CF8M Double Eccentric Butterfly Valve Conform to API 509.
They are tested according to API 598, and marked as per MSS SP-25.
1. Construction is as follows:
- Double or Triple Eccentric |
- Single Type Body |
- Renewable Sealing Ring |
- Fire Safe Design |
- Anti-static Design |
- Uni-direction or Bi-direction |
- Butt Weld Ends to ASME B16.25 |
- Flanged Ends to ASME B16.5 |
- Wafer or Lug Suit to Flanged(ASME B16.5 or B16.47) |
2. Main Part & Materials
Part Names |
Part Materials |
Body |
WCB |
LCB |
WC6 |
CF8 |
CF8M |
CF3 |
CF3M |
Disc |
WCB |
LCB |
WC6 |
CF8 |
CF8M |
CF3 |
CF3M |
Stem |
F6a |
F304 |
F6a |
F304 |
F316 |
F304L |
F316L |
Seat/Seat Ring |
PTFE/RPTFE/NYLON/DEVLON/PEEK or METAL |
Packing |
Graphite/PTFE |
Gasket |
SS304+Graphite/SS304+Graphite |
Bolts/Nuts |
B7/2H |
L7/4 |
B16/4 |
B8/8 |
B8M/8M |
B8/8 |
B8M/8M |
Suitable Medium |
W.O.G etc. |
HNO3, CH3OOH etc. |
Suitable Temperature |
-29~425 °C |
-46~340 °C |
-46~340 °C |
-196~427 °C |
-196~427 °C |
-196~427 °C |
-196~427 °C |
Part Names |
Part Materials |
Body |
Cast Iron |
Ductile Iron |
A126 B |
GG25 |
FC 20 |
A536 |
A395 |
GGG40 |
GGG50 |
Disc |
Ductile Iorn/CF8/CF8M/CF3/CF3M/Alum-Bronze |
Stem |
SS410/SS420/SS416/SS304/SS316/Monel |
Seat/Seat Ring |
NBR/EPDM/PTFE |
Packing |
Graphite/PTFE |
Gasket |
SS304+Graphite/SS304+Graphite |
Suitable Medium |
Water, Waste Water, Sewage |
Suitable Temperature |
-29~150 °C |
3. Normal Pressure Rating
PN10~PN64, CLASS150~600
4. Normal Size Range
DN50~DN1800, 2"~72"