Brief
butterfly wafer check valve is a save-energe product manufacted based on the foreign advanced technology and in accordance with relative international standard. This product is featured by excellentretaining performance, high safety and reliability and low flow resistance. It is used as a check valve in one way suitable for system in the industries of perochemical , food processing medicine, textile, paper-making, water supply and drainage, metallurgy, energy and light industry etc.
Technical data
|
DN(mm) Nominal Diameter |
50(2)-700(28) |
50(2)-450(18) |
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|
PN(Mpa)Nominal Pressure |
1.0 |
1.6 |
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Testing Pressure |
Shell |
1.5 |
2.4 |
|
Sealing |
1.1 |
1.76 |
|
|
Suitable temperature(degree) |
-23~+93 |
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Suitable mediums |
Fresh water, sewage, sea water, air, steam, food, medicine. Oils, acids. Etc |
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Features
1. Small in size, light in weight, compact in structure, easy inmintenance.
2. Two torsion springs are used excerting on each of the pair valve plates, which close the plates quickly and automatically.
3. The quick-close action prevents the medium from flowing back and eliminates water-hammer effect.
4. This valve is short in length, so that it is rigid and easy to mount.
5. It is easy to install on pipeline which is laid horizontaly or verticaly.
6. This valve is tightly sealed , without leakage under the pressure water test.
7. Safe and realiable in operation , high interference-resistance.
8. The connection dimensions of flanges accord with the standard of GB4216.4-4216.5-84
9. The face to face dimensions are in accordance with GB12221-89 ISO5752-82
l The stem of the valve should be perpendicular to the horizontal level when the valve is mounted on horizontal pipeline. For vertical in stallation the direction of flow should be downward.
Material of main parts
Body: cast lron ductile lron carbon steel stainless steel