Pneumatic hard seal butterfly valve

Product working principle and use:
D673H pneumatic clamp type hard seal butterfly valve adopts precision J-shaped elastic seal ring and three eccentric multi-layer metal hard seal structure, suitable for medium temperature ≤425℃ treatment of gold, electric power, petrochemical industry, water supply and drainage and municipal construction and other industrial pipelines, for regulating flow and load stoppage body use. The valve adopts three eccentric structure, the valve seat and plate sealing surface are made of different hardness and stainless steel, with good corrosion resistance and long service life.
Product structure features:
1, the use of three eccentric sealing structure, the seat and the butterfly plate almost no wear, with more and more tight sealing function. 2
The sealing ring is made of stainless steel, with the double advantages of metal hard seal and elastic seal, regardless of low temperature or high temperature, excellent sealing performance, corrosion resistance, long service life and so on.
3. The sealing surface of the plate is surfacing cobalt-based cemented carbide, which is wear-resistant and has long service life.
4, the large size of the butterfly adopts rectangular structure, high strength, large overflow, small flow resistance.
5, the valve has a variety of sealing functions, installation is not limited by the flow of the medium, is not affected by the space position, can be driven
The device can be installed in multiple stations (rotation 90° or 180°) and is for user use only.
Product performance parameters:
Nominal passage DN (mm) 50 ~ 2000
Nominal pharmacology PN (MPa) 0.6 1.0 1.6 2.5
Seal test (MPa) 0.66 1.1 1.76 2.75
Strength test (MPa) 0.9 1.5 2.4 3.75
Applicable temperature Carbon steel: -29℃ ~ 425℃ Stainless steel: -40℃ ~ 650℃
Applicable media water, air, natural gas, oil and weak corrosive fluids
Leakage rate meets GB/T13927-92 standard
Drive mode worm gear drive, electric, pneumatic, hydraulic
Product main parts materials:
Part name material
Body WCB, alloy steel, stainless steel, QT450-10
Butterfly plate WCB, alloy steel, stainless steel, QT450-10
Valve shaft 2Cr13 stainless steel, alloy steel
Seal ring stainless steel ring
Flexible graphite

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