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This is the RM Suttner ST261 unloader valve with 2.1 injector, it has 3/8" female inlet and outlet. Unloader valves are essential for regulating the water pressure when pressure washing and prevent pressure from building up when the pressure washer is idling.
The Suttner ST-261 Unloader Valve with Integrated Chemical Injector (2.1 mm) combines precise pressure regulation with downstream chemical injection in one compact, high-performance unit. Manufactured from durable brass and designed for demanding industrial pressure washer systems, it protects pumps during bypass operation while providing reliable dosing for professional cleaning applications. Suitable for systems operating up to 250 bar, 30 L/min and 80°C.
Key Features
Regulates pressure to protect pumps and system components
Pressure-actuated design for smooth bypass operation
