Focus On Triple Offset Butterfly Valve 


Metal Seated Butterfly Valve Introduction

The metal seated butterfly valve is mainly composed of valve body butterfly plate, valve shaft, valve body sealing plate, butterfly plate sealing plate, shaft sleeve, self-lubricating bearing driving device, etc. The high-performance metal hard seal butterfly valve drives the valve shaft to rotate through various driving devices, and the pin shaft drives the butterfly plate to rotate in the range of 90 to make the butterfly plate open or closed, so as to achieve the purpose of connecting or cutting off. It is widely used in metallurgy, hydropower, thermal power, heating, urban water supply and drainage, farmland drainage and other industries. The applicable medium is gas, steam, air and water in the pipeline system.

Metal Seated Butterfly Valve Structural Characteristics

① The unique design of three-way eccentricity makes the sealing surface drive without friction and extends the service life of the valve.

② The elastic seal is produced by torque.

③ The ingenious wedge design enables the valve to have the automatic sealing function of closing more and more tightly, with compensation and zero leakage between the sealing surfaces.

④ Small volume, light weight, light operation and easy installation.

⑤ According to the user’s requirements, pneumatic and electric devices can be configured to meet the needs of remote control and program control.

⑥ The material of the replacement parts can be applied to all kinds of media and can be used for lining anti-corrosion (F46. Gxpp, Po, etc.).

⑦ The sealing ring is made of stainless steel, which has the double advantages of metal hard seal and elastic seal. It has excellent sealing performance both at low temperature and high temperature.

Difference Between Metal Seated Butterfly Valve And Rubber Seal Butterfly Valve

The disadvantage of rubber seal butterfly valve is that when it is used for throttling, it will produce cavitation due to improper use, which will cause peeling and damage of rubber seat. To this end, now the international development of metal sealing butterfly valve, gold.The butterfly valve is a kind of hard sealing butterfly valve with eccentric metal sealing structure. The sealing form is metal to metal sealing. The replaceable metal sealing ring is used for metal sealing, and the stainless steel plate and chalky composite plate sealing ring is used for metal sealing. The high performance elastic metal seal butterfly valve adopts a double eccentric and a special inclined cone elliptic seal structure. It solves the problem that the traditional eccentric butterfly valve is open and close in 0 ° ~ ten ° The instant sealing surface is still in the disadvantage of sliding contact friction. The butterfly plate can separate the sealing surface at the moment of opening and seal at the moment of closing, so as to prolong the service life and achieve the best sealing performance.