Kunkle 0537 - 1-1/2" x 2", 50 PSI, Section IV Relief Valve, 5112 pph Capacity

This valve serves the dual purpose of relieving overpressure created by thermal expansion under normal firing conditions and overpressure in the form of water or steam created in over-firing due to failure of electrical or other controls on hot water boilers, heat exchangers and generators.

Details:

• Kunkle 0537 model relief valve
• 1-1/2" Inlet
• 2" outlet
• 50 PSI set pressure
• Bronze, B584 alloy 84400 seat
• Heavy duty lift lever
• ASME IV, 'HV' rated for low pressure hot water boilers
• Stainless steel, A313-631 spring
• Temperature range: -20° to 250° F (-29° to 121° C)