Butt Welded Butterfly Valves are triple offset structure and suitable for high temperature , high pressure , corrosion etc. Its are quarter-turn valves which are used for isolating or regulating flow .They are favoured for being lighter in weight, requiring less support and are suitable for water and gas, which makes them useful across industrial, mining and power applications.
1. Reliable sealing,convenient operation,opening and closing fast.
2. This kind of valve with no flange, which makes pipe elegantly and binding up conveniently.
3. It adopt triple offset elasticity or multiple layers hard sealing configuration, the hermetical capability can reach to reliable sealing performance.
4. The sealing of disc can be replaced by loosening the disc ring bolts, saving the cost of the valve.
5.The ends of valve inlet port and outlet port has the annular boss, which is conducive to the valve and pipe welding heat absorption and diffusion.
Butterfly valves are quarter-turn valves that are best used for the stop/start of media flow in pipelines. When the valve handle is turned 90°, it either opens or closes completely. Throttling can be a bit tough, but these valves can still be used for regulating purposes.
Butterfly valves are usually installed in a fully open position. This is because installing the valve in its closed position can cause difficulties with the seat and seal positions.
Applicable Standards:
Butterfly valve design according to API609, ASME B16.34
Face to face ASME B16.10/API609
End Flanges ASME B16.5/ASME B16.47
Butt Welding ends ASME B16.25
Inspection and test API 598
| Material |
| Body |
Carbon Steel(WCB A216), Stainless Steel(SS304/SS316/SS304L/SS316L) , Duplex Stainless Steel(2507/1.4529) |
| Disc |
Carbon Steel(WCB A216), Stainless Steel(SS304/SS316/SS304L/SS316L) , Duplex Stainless Steel(2507/1.4529) |
| Stem/Shaft |
SS416, SS431, SS304, SS316, Duplex Stainless Steel, Monel |
| Seat |
2Cr13, STL |
| Packing |
Flexible Graphite, Fluoroplastics |
| Actuator |
Hand Lever, Gear Box, Electric Actuator, Pneumatic Actuator |
){kind=link}