SPA Instruments - India Pvt Ltd

Holi 21st March, 2019

http://instrumentationtools.com/direct-reverse-acting-control-valves/

Direct & Reverse Acting Control Valves Instrumentation Tools Actuators may be categorized as ‘direct acting’ or ‘reverse acting’ and some configurations are indicated in Below Figure. In a reverse acting actuator an increase in the pneumatic pressure applied to the diaphragm lifts the valve stem (in a normally seated valve this will open the valve and is call...