Source: Internet Release Date: 2012/3/8
installation
Control valveAttention should be paid to the following points. (1)
Control valveIt should be installed vertically on a horizontal pipe. If horizontal and inclined installation are required under special circumstances, support is generally required. (2) When the nominal diameter of the selected regulating valve is different from the process pipe diameter, a reducing joint should be installed for connection. (3) The installation site should have good environmental conditions, and the ambient temperature should be -25～+55℃. (4) Try to avoid installing in places with vibration sources, otherwise necessary anti-vibration reinforcement measures should be taken. (5) When installing, the arrow direction on the valve body or flange must point to the direction of the medium. (6) Before installation, it is necessary to carefully remove welding slag and other debris in the pipeline; after installation, the valve core should be at the maximum opening, and the pipeline and regulating valve should be cleaned again to prevent debris from jamming and damaging the joints. Flow pieces. (7) Pneumatic regulating valve should be installed in a position convenient for maintenance and repair. (8) The straight pipe section before the valve should be as long as possible. (9) The outlet piping should be a straight pipe section with 3 to 5 times the pipe diameter. (10) In order to ensure that the failure of the regulating valve and regulating system will not affect production and cause safety accidents, it is generally necessary to install bypass and bypass valves.The bypass valve cannot be installed in
Control valveDirectly above to prevent the corrosive medium in the bypass valve from leaking to the regulating valve.The stop valve should be installed before and after the regulating valve. For high temperature, high pressure, frosty, and viscous media, a pilot valve should also be installed.
