VENTIL FOR AVSTENGNING AV TRYCKMEDIUM VID ETT FORUTBESTEMT TRYCKFALL

摘要

A holder (22) retains a valve slide (13) in a first open position. When there is an excessive back flow of pressure medium from one outlet port (A) to the other (B), the slide adopts a second position in which the valve is closed. In this second position, the valve slide-with a sealing surface (21) surrounding the flow channel (17)-locates against a seat plate (16) which blocks the channel.