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LOW NOISE PILOT OPERATED RELIEF VALVE
FEATURES
• HRF series relief valve is
designed on the theory of differential pressure created by flow
across the orifice of the balance piston. This differential
pressure acts to open the piston against the spring, permitting
enough fluid vented to tank at the set pressure.
• Piston moves smoothly, and controlled by pilot pressure,
provides stable pressure control and good repeatability.
• Special internal passage design keeps flow noise to a minimum.
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