HYDAX GAUGE ISOLATOR VALVE Test Indicator

The Gauge Isolator Valves protect the pressure gauge from damaging pressure surges, hydraulic shock and mechanical vibrations. The fluid is completely isolated from the gauge until the knob is pressed. By pressing the knob, the fluid is connected directly to the gauge port giving instant and accurate readings on the gauge. As the knob is released, the spring-loaded valve closes automatically connecting the gauge port to the drain and completely blocking the pressure port. In operations, an orifice in the gauge port acts as a partial snubber, protecting the gauge from the initial surge of fluid as the knob is pressed.