Wafer lined fluorine butterfly valve
At present, soft-sealing butterfly valves, as a component used to realize on-off and flow control of pipeline systems, have been widely used in many fields such as petroleum, chemical industry, metallurgy, hydropower, etc. In the known butterfly valve technology, the sealing form mostly adopts a sealing structure, and the sealing materials are rubber, polytetrafluoroethylene, etc. Due to the limitations of structural characteristics, it is not suitable for industries such as high temperature resistance, high pressure resistance, corrosion resistance, and wear resistance. An existing relatively advanced butterfly valve is a triple-eccentric metal hard-seal butterfly valve. The valve body and valve seat are one-piece components, and the sealing surface layer of the valve seat is overlay-welded with temperature-resistant and corrosion-resistant alloy materials. Multi-layer soft stacked sealing rings are fixed on the valve plate. Compared with traditional butterfly valves, this kind of butterfly valve has high temperature resistance, is easy to operate, and has no friction when opening and closing. When closing, the torque of the transmission mechanism increases to compensate for the seal, which improves the performance of the butterfly valve. Excellent sealing performance and extended service life.
Product Advantages
Valve shaft valve plate octagonal connection
Experiments have proven that the octagonal connection can more effectively ensure the consistency of the valve shaft and valve plate movements, and reduce the failure rate by more than 20%.
Explosion-proof pin design
It adopts explosion-proof pin design
Valve seat embedded design
The valve seat has a backless design and light torque, making it convenient for users to replace the valve seat by themselves.
Self-lubricating design
The butterfly valve is designed with a self-lubricating ring with friction coefficient on the valve stem. It can greatly reduce the friction of valve opening and closing.
product details
Classifications
1. Classification according to structural form
(1) Center seal butterfly valve
(2) Single eccentric sealed coal valve
(3)Double eccentric seal butterfly valve
(4) Triple eccentric seal valve
2. Classification according to sealing surface material
(1) Soft seal butterfly valve.
1) The sealing pair is composed of non-metal soft material to non-metal soft material.
2) The sealing pair is composed of metal materials and non-metal soft materials.
(2) Metal seal butterfly valve. The sealing pair is composed of metal hard material to metal hard material.
3. Classification according to sealing form
(1) Forced sealing butterfly valve
1) Elastic sealing butterfly valve. The sealing specific pressure is generated by the valve plate extruding the valve seat when the valve is closed, and the elasticity of the valve seat or valve plate.
2) External torque sealing butterfly valve. The sealing specific pressure is generated by the torque applied to the valve shaft.
(2) Pressurized sealed butterfly valve. The sealing specific pressure is generated by the charging of elastic sealing elements on the valve seat or valve plate.
(3) Automatic sealing butterfly valve. The sealing specific pressure is automatically generated by the medium pressure.
4. Classification according to work pressure
(1) Vacuum butterfly valve. Butterfly valve whose working pressure is lower than the standard reactor atmospheric pressure.
(2) Low pressure butterfly valve. Butterfly valve with nominal pressure PN<1.6MPa.
(3) Medium pressure butterfly valve. Butterfly valve with nominal pressure PN of 2.5--6.4MPa.
(4) High-pressure butterfly valve. Butterfly valve with nominal pressure PN of 10.0--80.0MPa.
(5) Ultra-high pressure butterfly valve. Butterfly valve with nominal pressure PN>100MPa.
5. Classification according to working temperature
(1) High temperature butterfly valve. Butterfly valve with t>450 C
(2) Medium temperature butterfly valve. 120 C<t<450 C butterfly valve
(3) Normal temperature butterfly valve. A 40C<t<;120C butterfly valve
(4) Low temperature butterfly valve. A 100<t<a 40 C butterfly valve
(5) Ultra-low temperature butterfly valve. t<-100 C butterfly valve
6. Classification by connection method
(1) Wafer butterfly valve
(2)Flange butterfly valve
(3)Lug type butterfly valve
(4) Welded butterfly valve
Product Display
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