FEATURES: Suitable for use with multiple guns at the same time Dynamic seals made up of o-rings and teflon runner Optimized internal passages that guarantee reduced pressure loss No risk of fittings being ejected in case of overpressure because o-rings are positioned upstream to the threads 1/4" FPT fitting for pressure gauge SPECIFICATIONS: Maximum volume: 21 GPM Minimum adjustable pressure: 400 PSI Maximum Adjustable pressure: 4500 PSI Pressure drop to reset bypass: 32% (This is the pressure reduction necessary in comparison to the set up in order that the valve brings back pressure in the circuit, % figures of the pressure set up) Maximum temperature: 195F. (Unloader is designed to operate at a CONTINUOUS water temperature of 140F. It can be operated for short periods at a maximum temperature of 195F.) Port sizes: 1/2" FPT inlet, discharge and bypass Weight: 2.5 lbs