Wafer Hard Seal Butterfly Valve
Model No.: D73H Hits: 1330
Previous: Electric Hard Seal Butterfly Valve
Key Specifications / Features
Wafer hard seal butterfly valve, based on imported advanced technique, adopts fine J shape elastic seal ring and triple offset multilayer metal hard sealing structure. Applicable temperature belows 425℃. It is widely used to regulate flow or closure medium in metallurgy, petroleum, power and other industries. The valve utilizes triple offset sealing structure. Valve seat and disc made of stainless steel with different hardness, have good corrosion resistance and long service life. The valve has bi-directional sealing, according with GB/T13927-92 pressure test standard.
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. The seal ring of the disc is overlay with STL, with 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.
|Nominal diameter DN(mm)||50～2000|
|Nominal Pressure PN(MPa)||0.6||1.0||1.6||2.5|
|Applicable temperature||Carbon steel: -29℃～425℃; stainless steel: -40℃～650℃|
|Applicable medium||Water, air, gas, oil and weak corrosive fluid|
|Driving mode||Manual, worm gear, pneumatic, electric|
|Valve body||WCB, alloy steel, stainless steel, QT450-10|
|disc||WCB, alloy steel, stainless steel, QT450-10|
|Valve shaft||2Cr13 stainless steel, alloy steel|
|Seal ring||Stainless steel|
|Manufacturing standard||JB/T 8527-97|
|Face to Face standard||GB12221-89|
|Examination standard||GB/T 13927-92|
|Nominal diameter(DN)||Dimensions||Flange sizes & bolt specifications|
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