Products / Kunkle 537
Kunkle 537
Bronze and cast iron safety relief valves for low pressure hot water boilers, heat exchangers and generators. Four sizes from 3/4″ x 1″ to 2″ x 2-1/2″ FNPT, set from 15 to 160 psig, relieving up to 24,871 lb/h (24.9 million BTU/h). ASME Sections IV and XIII ‘HV’, National Board certified. Bronze body on 3/4″ and 1″; cast iron on 1-1/2″ and 2″.
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Inlet Size
1-1/2" FNPT1" FNPT2" FNPT3/4" FNPT
Seat
Insert seat above an NBR O-ring body seal, EPDM resilient insert, top guided discIntegral bronze seat (B584 alloy 84400) with EPDM resilient insert, top guided disc