Fluid control valve use in flow measurement has a volume for pressure compensation

摘要

The valve has a flow control stage [6.4] that can move axially against a valve seat. The actuator has a piston [6.7]that is moved by compressed air [6.9] against the closing action of a coil spring. A further connection [6.10.2] connects with a clearance space [6.10.4] connected to the top side of the piston [6.8] to provide compensation.