AIR PURGING PRESSURE REGULATING VALVE

摘要

A valve housing receives a spool and the spool has a regulating chamber selectively communicating a supply line to a return line. The spool is biased in one direction by a spring force and there is a second force biasing the spool in an opposed direction with the second bias force being provided by a fluid pressure within a hydraulic system associated with the pressure regulating valve. The amount of communication between the supply port and the return port is regulated by a position of the spool as the bias force from the fluid pressure change. Damper chambers are provided on opposed sides of the spool and serve to dampen a speed of movement of the spool and a supply line for supplying fluid into the damper chambers through check valves. The supply line serves to assist in purging air outwardly of the damper chambers.

主权项

1. A pressure regulating valve comprising:
a valve housing receiving a spool, said spool having a regulating chamber selectively communicating a main supply port to a main return port, and said spool being biased in one direction by a spring force and there being a second force biasing said spool in an opposed direction, with said second force being provided by a fluid pressure within a hydraulic system associated with said pressure regulating valve, communication between said main supply port and said main return port being regulated by a position of said spool as the second force changes; and damper chambers provided on opposed sides of said spool, and serving to dampen a speed of movement of said spool, and a damper supply line for supplying fluid into said damper chambers through check valves, said damper supply line serving to assist in purging air outwardly of said damper chambers.