Pneumatic Butterfly Valve| Stainless steel Butterfly Valve
ISO9001, AAA, CE, SGS Certificated.
Goods in Stock& Swift delivery
Engineers at your service!
1. Summarize
Pneumatic Metal Seal Butterfly Valve| Triple Offset Butterfly Valve function as open-close part in the rotating circular butterfly disc with valve stem, could achieve the opening and closing of the valve. Butterfly valves for shut-off valve can also be designed to make regulation and truncation.
Metal Seal Butterfly Valve| Metal Seal Butterfly Valve has no mechanical wear, could achieve zero leakage. Used for throttling or shutting off the flow of corrosive or non corrosive gases, liquids and semi liquid. It can installed in any selected position in pipelines in the industries of petroleum processing, chemicals, food, medicine, textile, paper making, hydroelectricity engineering, building, water supply and sewage, metallurgy, energy engineering as well as light industry.
2. Main Performance Parameter
Model | D343H, D643H, D943H, D941H |
Nominal Pressure | 0.25 Mpa | 0.1Mpa | 0.6 Mpa | 1.0 Mpa |
Shell Test Pressure | 0.375 Mpa | 0.15Mpa | 0.9 Mpa | 1.5Mpa |
Seal Test Pressure | 0.275 Mpa | 0.11Mpa | 0.66 Mpa | 1.1Mpa |
Actuating Way | Pneumatic, Electric, Hydraulic |
Air Supply | 0.4-0.6MPa |
Leakage Rate | Zero |
Temperature | ≤350°C |
Medium | Gas, Air, Combustible Gas, Water, Oil, Steam |
3. Main Part Material
Name | Valve Body | Valve Disc | Seal | Stem |
Material | Carbon Steel | Carbon Steel | Stainless Steel | Stainless Steel |
4. Structure Feature 4.1 Fluid resistance is small. And for middle and large size butterfly valve, the effective area is larger when fully opened. 4.2 Simple structure, smaller size, lighter weight. 4.3 Triple Eccentric The stem axis offsets a certain size with the sealing surface of the disc; the sealing surface of the disc offsets a certain size with the axis of the passage of the valve body; the passage of the valve body offsets an eccentric angle with the rotation axis of valve seat. Therefore, the valve is called three-eccentric butterfly valve. When butterfly valve opens from 0 ° to 90 °, butterfly valve sealing surface will immediately detach from the seat sealing surface; When it closes from 90 ° to 0 °, only at the off moment the conical sealing surface of butterfly disc will contact and compact the conical sealing surface of valve seat. So there is no friction between the sealing surface of the valve seat and the disc, which would avoid any possibility of wear and leakage.
If you have any question or demand, pls do not hesitate to tell, our engineers and I are at your time! Best regards, Bonnie
If you have any question or demand, pls do not hesitate to tell, our engineers and I are at your time! Best regards, Bonnie 