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Pneumatic hard seal butterfly valve,hard seal butterfly valve,butterfly valve

Product Code : VF--DCC-D68-CU

Valve model: D643H, D673H


Diameter: DN50 ~ DN1200


Structure: three eccentric hard seal (sandwich type, flange)


Body material: carbon steel WCB, stainless steel 304, stainless steel 316


Nominal pressure: PN10, PN16, PN25, PN40


Applicable temperature: -40℃ ~ 450℃


Application: water, steam, oil, acid corrosion, etc


Please contact us if you need customized services. We will contact you with the price and availability in 24 hours.

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Pneumatic hard seal butterfly valve,hard seal butterfly valve,butterfly valve VF--DCC-D68-CU Customized Customized

Pneumatic hard seal butterfly valve Introduction:

Pneumatic hard seal butterfly valve is a long life, high quality butterfly valve, the use of three-dimensional eccentric principle design, mainly by the flange or clamp type hard seal butterfly valve and the pneumatic actuator is connected to the composition, the valve seat and disc sealing surface of different hardness of metal materials or stainless steel, with high temperature resistance, corrosion resistance, wear resistance and other advantages. The pneumatic hard seal butterfly valve adopts a multi-level structure compatible with hard and soft seals, which can ensure excellent sealing performance in both low and high temperature conditions, and the disc and seat are basically frictionless when the valve is opened and closed, which greatly improves the service life of the butterfly valve. Pneumatic hard seal butterfly valve is widely used in the pipeline of power, oil, steam, air, sewage and other media, is the best device for switching control or regulating flow.


Pneumatic hard seal butterfly valve performance characteristics:

1, the use of three eccentric principle structure, the valve seat and plate in the opening and closing almost frictionless, improve the service life.

2, unique structure, flexible operation, labor-saving, convenient, not affected by high and low medium pressure, reliable sealing performance.

3, can be divided into pneumatic clamp type hard seal butterfly valve and pneumatic flange hard seal butterfly valve, meet different connection methods, easy to install in the pipeline.

3, the seal is composed of soft and hard metal sheets stacked, with the double advantages of metal seal and elastic seal, regardless of low temperature and high temperature conditions, have excellent sealing characteristics.

5, the butterfly valve is equipped with a sealing adjustment device, if the sealing performance decreases after long-term use, the disc sealing ring can be adjusted close to the seat to restore the original sealing performance, greatly improving the service life.


Pneumatic hard seal butterfly valve is widely used in the pipeline of power, oil, steam, air, sewage and other media, is the best device for switching control or regulating flow.

Packing of Standard Packing: 

Typical bulk packaging includes palletized plastic 5 gallon/25 kg. pails, fiber and steel drums to 1 ton super sacks in full container (FCL) or truck load (T/L) quantities. Research and sample quantities and hygroscopic, oxidizing or other air sensitive materials may be packaged under argon or vacuum. Solutions are packaged in polypropylene, plastic or glass jars up to palletized 470 gallon liquid totes Special package is available on request. E FORUs’  is carefully handled to minimize damage during storage and transportation and to preserve the quality of our products in their original condition.



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