Characteristics of pneumatic diaphragm actuator

1, the structure of the reaction implementing agencies basically the same, by the film on the cover, the lower diaphragm casing film diaphragm, push rod, spring, adjusting member, brackets and stroke display panel and other components.
2 positive reaction implementing agencies structure the main difference is the reaction executing agency of the input signal in the lower part of the diaphragm, leads putter also lower stem cited source to use the gland seal, and the action actuator is The input signal in the upper part of the membrane cartridge, the push rod leads in the lower part of the membrane cartridge, due to the good sealing of the film sheet, therefore, the stem cited references do not need to be sealed.stainless steel solenoid valve
3 can be adjusted by adjusting member to change the initial spring force, thereby changing the thrust of the executive agency.
The executing agencies presents the linear relationship between input and output characteristic, i.e. the amount of displacement output and the input signal into a linear relationship between the pressure. The displacement of the output is called a stroke, the display showed by the stroke. Reaction implementing agencies are still top of the diaphragm to install the valve position display for valve position. Domestic pneumatic diaphragm actuator stroke lOmm, 16mm, 25mm, 40mm, 60mm and lOOmm six specifications.
Diaphragm effective area of ​​the implementing agencies and the thrust is proportional to the effective area of ​​the greater, the greater the thrust of the implementing agencies.
6 Add the displacement conversion device, the linear displacement angular displacement for rotating the valve body.
Can add a valve positioner, valve position detection and feedback to improve the performance of control valves.
(8) can be added to the hand wheel, the failure of the automatic control handwheel downgrade, improve system reliability.high temperature solenoid valve