Wafer butterfly check valve a save-energy product, is manufactured based on the foreign advanced technology and in accordance with relative international standards. This product is featured by excellent retaining performance, high safety and reliability and low flow resistance. It is suitable for systems in the industries of petrochemical, food processing, medicine, textile, pa-per-making, water supply and drainage, metallurgy, energy and lightindustry etc used as a check valve in one way

Technical Data

1. Nominal DiameterDN(mm): 50(2″)~700(28″), 50(2″)~450(18″)
2. Nominal Pressure PN (MPa): 1.0~1.6
3. Testing Pressure (MPa): Shell: 1.5~2.4 Sealing: 1.1~1.76
4. Suitable Mediums: Fresh water, sewage, sea water, air, steam, food, medicine, oils, acids, etc.
5. Working Temperature: -23~+93°C

Feature

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 ank 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 horizontally or vertically.
6. This valve is tightly sealed, without leakage under the pressure water test.
7. Safe and reliable in operation, high interference-resistance.
8. The connection dimensions of flanges accord with the standards of GB4216.4-4216.5-84.
9. The face to face dimensions are in accordance with GB12221-89 ISO5752-82.

Materials Of Main Parts

Dimension