Pneumatic diaphragm regulating pneumatic valve needs to be maintained during assembly

pneumatic diaphragm regulating pneumatic valve in assembly attention:

regulating pneumatic valve assembly before check the pneumatic valve, pneumatic valve seat, pneumatic valve rod with and without defects. After grinding of pneumatic valve core should be closely contact with pneumatic valve seat, pneumatic valve stem should ZhiZheng smooth.

after regulating pneumatic valve and actuator assembly, to input data to make film chamber adjust the pressure signal of pneumatic valve closed, adjust the pneumatic pneumatic valve core and valve stem length pneumatic seat contact closely. For gas pass pneumatic valve pressure as input signal. Kg/cm, with a unit combination instrument is designed for. kg/cm； The gas pressure pneumatic valve input signal is zero.

pneumatic diaphragm regulating pneumatic valve is generally divided into nine categories:

( Single-seat regulating pneumatic valve;
　　
　　( Two-seater regulating pneumatic valve;
　　
　　( Sleeve adjusting pneumatic valve;
　　
　　( Pneumatic valve Angle adjustment;
　　
　　( The 3-way regulating pneumatic valve;
　　
　　( Pneumatic diaphragm valve;
　　
　　( Butterfly pneumatic valve;
　　
　　( Pneumatic ball valve;
　　
　　( Eccentric rotary pneumatic valve. Before for straight travel, after three angular travel.

the nine kinds of products is also the most basic, also known as the common products, base type of product or standard products. All kinds of special products, special products are on the basis of the nine products improved variant.

pneumatic diaphragm regulating pneumatic valve selection matters need to pay attention to:

and selection according to the using requirement.

pneumatic diaphragm regulating pneumatic valve by pneumatic valve core and valve body ( Including pneumatic seat of two parts, according to the requirements of the use of different have different structure forms. Pneumatic diaphragm regulating pneumatic valve is mainly through single-seat pneumatic valve, two-seat regulating pneumatic valve and pressure Angle type pneumatic valve adjustment.

, according to security selection.

faintly pneumatic diaphragm regulating pneumatic valve pneumatic valve and open her breath valve in two forms. According to the different production process safety and use requirement of consideration, to be interrupted when the signal pressure regulating pneumatic valve is in open or closed position, to process the harmfulness caused by size.

and flow characteristic.

in the design of the automatic control system in the process of choosing pneumatic diaphragm regulating pneumatic valve flow characteristics should be considered. The properties of the ideal typical linear flow characteristics, such as percentage flow characteristics ( Logarithmic flow characteristic, quick opening four flow characteristic and parabolic flow characteristics.