Pre-controlled pressure relief valve e.g. for motion and control technologies, has pilot valve and damper arranged in four ports which are fillable for connecting to spring area of valve seat

摘要

The valve has a pilot valve (17) and a damper (36, 37) arranged in four ports (40, 23, 24, 25) which are fillable (20, 22), for connecting to a spring area (16) of a valve seat (11). A piston valve (26) has a limited fiscal space (33) and a leading branch (20) which branches behind a spring-loaded check valve (21). A second branch (22) is held at an edge of the piston valve (26) and the port (23).