Butterfly valve several minutes simple division method by Pindee Valve

Pindee Valve is a branch company from PINDEE INDUSTRIAL,we hereby introduce you some important methods for you,If you have any new quotation request pls contact us and contact Freeman Shang,email address: sales@pindee.com

1. Classify by structural form

(1) Center sealed butterfly valve

(2) Single eccentric sealing butterfly valve

(3) Double eccentric sealing butterfly valve

(4) Triple eccentric sealing butterfly valve

2. Classify by sealing surface material

(1) Soft sealed butterfly valve.

1) The sealing pair is composed of non-metallic soft materials.

2) The sealing pair is composed of metal hard materials and non-metal soft materials.

(2) Metal hard sealed butterfly valve. The sealing pair is composed of metal hard materials.

3. Classified by sealing form

(1) Forced sealing butterfly valve

1) Elastic sealed butterfly valve. The sealing pressure is generated by the compression of the valve seat by the valve plate when the valve is closed, and the elasticity of the valve seat or valve plate

2) External torque sealed butterfly valve. The sealing pressure is generated by the torque applied to the valve shaft externally

(2) Pressure sealed butterfly valve. The sealing pressure is generated by the pressurization of the elastic sealing element on the valve seat or valve plate

(3) Automatic sealing butterfly valve. The sealing pressure is automatically generated by the medium pressure.

4. Classify by work pressure

(1) Vacuum butterfly valve. Butterfly valves with working pressure lower than the atmospheric pressure of the standard reactor.

(2) Low pressure butterfly valve. Butterfly valve with nominal pressure PN ＜ 1.6MPa.

(3) Medium pressure butterfly valve. Butterfly valves with nominal pressure PN ranging from 2.5 to 6.4 MPa.

(4) High pressure butterfly valve. The nominal pressure PN is 10. Butterfly valve with a pressure range of 0-80.0MPa.

(5) Ultra high pressure butterfly valve. Butterfly valves with nominal pressure PN>100MPa.

5. Classified by working temperature

(1) High temperature butterfly valve. Butterfly valve with temperature greater than 450 ° C

(2) Medium temperature butterfly valve. Butterfly valve with 120 ° C ＜ t ＜ 450 ° C

(3) Room temperature butterfly valve. 40C<t<; Butterfly valve at 120 ° C

(4) Low temperature butterfly valve. Butterfly valve with a temperature range of 100 ＜ t ＜ 40 ℃

(E) Ultra low temperature butterfly valve. Butterfly valve with temperature less than 100 ° C

6. Classify by connection method

(1) Wafer type Butterfly Valve Factory.

(2) Flanged butterfly valve made in China.

(3) Cheap price Lug type butterfly valve .

(4) Welded butterfly valve.