Unloader valve · Stainless steel 7531

• Flow3.8–80 l/min
• Pressure range27.5–152 bar
• Inlet connection1/2" NPT(F)

Stainless steel pressure-sensitive regulating unloader. In full by-pass it removes the load from the pump; it senses the pressure build-up from changes in downstream flow and by-passes the flow to protect the pump from overpressure. Pressure fluctuations stay small even with alternating use of several guns. Multiple ports make mounting convenient. The colour-coded spring identifies the pressure range and can be moved from one model to another. NBR O-rings are standard (fluid temperature up to 60 °C in continuous duty and up to 90 °C for short periods); with FPM O-rings for higher temperatures and chemical compatibility the valve carries the suffix .0110. The relief valve version carries the part number with the suffix .100.