Worm Gear Hard Seal Butterfly Valve

China Butterfly Valve manufacturer Xinhai offers Worm Gear Hard Seal Butterfly Valves in WCB, alloy steel, stainless steel, QT450-10, 1.0/1.6/2.5MPa.
Characteristics of wafer hard seal butterfly valve
1. The valve adopts triple offset sealing structure which cannot cause abrasion to valve seat and disc, having good seal.
2. Seal ring made of stainless steel, combines with the advantages of metal hard seal and elastic seal. No matter under low or high temperature, seal ring has good seal.
3. Disc overlay with STL, has abrasion resistance and long service life.
4. Large size butterfly valve, utilizing lattice structure, has high strength, large flow area and small flow resistance.
5. The valve has bi-directional seal. It can be installed at any position without the limitation of medium flow and space.
6. Actuating device adopts multistage installment which is convenient to use.
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