BS1873 WCB/CF8/CF8M Y Pattern Globe Valve Conform to BS1873, and ASME B16.34.
They are tested according to API 598, and marked as per MSS SP-25.
1. Construction is as follows:
| - Regular Port |
| - Outside Screw and Yoke(OS&Y) |
| - Bolted Bonnet with spiral-would gasket, threaded and seal welded bonnet and threaded and pressure seal bonnet |
| - Backseat |
| - Solid Disc(Plug, Ball/Spherical, Throttling) |
| - 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 |
| | Cast Iron | Ductile Iron |
| Body | A126 B | GG 20 | FC 20 | A536 | A395 | GGG40 | GGG50 | FCD |
| Bonnet | A126 B | GG 20 | FC 20 | A536 | A395 | GGG40 | GGG50 | FCD |
| Wedge | A126 B | GG 20 | FC 20 | A536 | A395 | GGG40 | GGG50 | FCD |
| Stem | F6a/SS410/SS420/SS304/SS316 |
| Seat/Seat Ring | NBR/EPDM/VITON |
| Suitable Medium | Water, Waste Water, Sewage |
| Suitable Temperature | -20~150 °C |
| | | | | | | | | |
| 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~DN500, 2"~20"