Combination ball valves can be customized
Do not know the pneumatic butterfly valve working principle and installation of the point
by：AIRWOLF
2021-01-15
Valve industry may have many friends said the working principle of pneumatic butterfly valve is very simple, all day in the talk, but if you want him one by one in detail, it is incoherent, half a day to say not clear, then here small make up for all the detailed introduces the working principle of pneumatic butterfly valve:
butterfly valve is made open-close circular disc and with the valve rod rotation to open and close and regulating fluid channel of a valve. The butterfly valve butterfly plate installed on the diameter of the pipe direction. Cylindrical channels in butterfly valve body, disc disc around the axis of rotation, rotation Angle for 0 ° ~ 90 °, rotate to 90 °, the valve is fully open.
after understand the working principle, then followed by a very important part of the pneumatic butterfly valve is the key points of construction and installation: the installation position, height, import and export direction must comply with the design requirements, the connection should be firmly close; All kinds of manual valves installed on the thermal insulation pipe, the handle is not allowed down; A visual inspection must be conducted before butterfly valve installation, the valve nameplate should be consistent with existing national standards 'universal signal valve' GB 12220. For the working pressure is greater than 1. 0 MPa and the valve with the function of cutting off on ZhuGanGuan, strength and strict performance test should be done before the installation, qualified rear must use. Strength test, the test pressure for the nominal pressure of 1. 5 times, duration of not less than 5 min, shell and packing shall be no leakage of valve shall be qualified. Leak test, the test pressure for the nominal pressure of 1. 1 times; The duration of the test pressure in the test should comply with the standard of GB 50243 requirements, with no leakage for qualified for valve sealing surface. Believe that through our detailed explanation, everyone must have benefits, if still have what not understand place can consultation pneumatic components factory automatic control valves.
butterfly valve is made open-close circular disc and with the valve rod rotation to open and close and regulating fluid channel of a valve. The butterfly valve butterfly plate installed on the diameter of the pipe direction. Cylindrical channels in butterfly valve body, disc disc around the axis of rotation, rotation Angle for 0 ° ~ 90 °, rotate to 90 °, the valve is fully open.
after understand the working principle, then followed by a very important part of the pneumatic butterfly valve is the key points of construction and installation: the installation position, height, import and export direction must comply with the design requirements, the connection should be firmly close; All kinds of manual valves installed on the thermal insulation pipe, the handle is not allowed down; A visual inspection must be conducted before butterfly valve installation, the valve nameplate should be consistent with existing national standards 'universal signal valve' GB 12220. For the working pressure is greater than 1. 0 MPa and the valve with the function of cutting off on ZhuGanGuan, strength and strict performance test should be done before the installation, qualified rear must use. Strength test, the test pressure for the nominal pressure of 1. 5 times, duration of not less than 5 min, shell and packing shall be no leakage of valve shall be qualified. Leak test, the test pressure for the nominal pressure of 1. 1 times; The duration of the test pressure in the test should comply with the standard of GB 50243 requirements, with no leakage for qualified for valve sealing surface. Believe that through our detailed explanation, everyone must have benefits, if still have what not understand place can consultation pneumatic components factory automatic control valves.
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