Pump device

摘要

The device has a moveable piston provided in a receptacle to displace pressure fluids from a working chamber (5) with a non-return valve (9, 9`). The valve vents the chamber and temporarily separates a hydraulic connection between the chamber and a hydraulic channel. The non-return valve has a valve seat (11) and a valve body (12), where the valve seat is assembled from several valve seat segments (13, 14).