Unloader valve · 316 stainless steel 7501

• Flow1.9–23 l/min
• Pressure range7–140 bar
• Inlet connection3/8" NPT(M)

316 stainless steel unloader valve for CAT PUMPS high-pressure plunger pumps, typically used with trigger gun, lance and nozzle in a high-pressure cleaning system. When the gun closes, the pressure wave opens the by-pass fully and the entire pump flow circulates at low pressure – this reduces wear, noise and energy consumption while the pump keeps running. When the gun opens again, full flow and full pressure are available at once. The valve regulates the working pressure and protects pump and system against damage from overpressure. The inlet is at the back, the discharge at the front and the by-pass at the bottom. Fluid temperature up to 82 °C.