Parker Hydraulic Group
GT Series Gauge Isolater

Series GT valves isolate gauges from damage and inaccurate readings caused by line pressure surges and hydraulic hammer.


  • The GT has a push-to-read knob that delivers instant pressure to the gauge, yet isolates the gauge from the fluid line until the knob is pressed. When the knob is released, a spring-loaded spool closes instantly and drains all fluid from the gauge back into the reservoir.

Click to Enlarge


  • Has a hardened steel spool.
  • Partial snubbing action protects the gauge from surge damage.
  • Optional panel mount.