135 Series Micro Flow Control Valve

Advantages 

Bellows are used to isolate the medium and meet the requirements

Function Principle

Positioner receives 0/4-20mA(0-5/10v) electrical signals from control system and converts them into air signals to control the valve and  make precise low adjustment using the bellow adjustable seat. Diaphragm is arranged between the valve body and the bonnet to  isolate the medium in place of the stem packing. Valve stays closed(open) by spring force in its normal state.  When piston is actuated by compressed air, valve becomes opened