Relay Valves

Ingersoll-Rand Relay Valves provide immediate response to assure Air Starter disengagement and prevent damage to the pinion or flywheel ring gear. The aluminum die cast housing resists abrasion and corrosion while the stainless steel piston return spring will not rust from moisture in the air line.


  • Maximum Operating Pressure = 225 psi (15.5 bar)
  • Operating Temperature Range = -20 to 250°F (-29 to 121°C)
  • Flow/ Pressure Drop shown on CSR-352:Cv= 28.5

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