Pneumatic control valve is how to install?

pneumatic regulating pneumatic valve is how to install?
( ） Pneumatic control valve should be installed in horizontal pipe runs with them up and down and the vertical pipe, typically under the pneumatic valve to support, to ensure stable and reliable. For special occasions, it is necessary to adjust the level of pneumatic valve installed in a vertical pipe, also should adjust the pneumatic valve support ( Except for small diameter regulating pneumatic valve) 。 When installed, want to avoid to bring additional stress to the regulating pneumatic valve) 。
( ） The calibre of the pneumatic control valve and process piping is not at the same time, reducing pipe connection should be adopted. When small regulating pneumatic valve installed, available threaded connections. Pneumatic fluid direction arrow on the valve body shall be consistent with the direction of flow. Pneumatic control valve installation position, the request has the certain height from ground, pneumatic valve up to leave a certain space, so that pneumatic valve disassembling and repairing.


（ ） Pneumatic control valve working environment temperature in ( - ~ +) Relative humidity is no more than % %, no more than % relative humidity.
( ） Before and after pneumatic control valve position should be straight pipe, the length is not smaller than the pipe diameter of times ( D） Pneumatic valve, in order to avoid the straight pipe is too short and affect the flow characteristic.
( ） For equipped with pneumatic pneumatic valve positioner and regulating pneumatic valve handwheel, must ensure that the operation, observation and easy to adjust.
( ） Pneumatic control valve before installation to thoroughly remove foreign bodies in the piping, such as dirt, slag, etc.
( ） To set up the by-pass pipe. Purpose is to facilitate switching or manual operation, can be adjusted without stopping the pneumatic valve for maintenance.