Separator for physical separation of upstream and downstream systems has piston bounding central pressure cavity

摘要

The system separator has a release valve (35), backflow preventers (48, 88) and a central pressure cavity (90), which is bounded by a piston (64). The piston is subjected to input pressure on one side and central pressure on the other. It can be moved by pressure difference against a loading spring (86) between two stops (46, 54).