Kunkle Valve 0537-E01-HM0100 Valve

The Kunkle Valve 0537-E01-HM0100 is an industrial-grade ASME Section IV steam relief valve designed specifically for low-pressure hot water heating boilers, heat exchangers, and steam generators. Engineered for high-capacity discharge, this valve features a 1" Female NPT inlet and a 1 1/4" Female NPT outlet, factory-set at 100 PSI. The internal B584 alloy 8440 bronze seat and durable SST spring material ensure consistent set-point accuracy and resistance to scaling in demanding HVACR environments. With a certified flow capacity of 4,312 lb/h (4,311,752 BTU/h), this pressure relief valve provides essential overpressure protection against thermal expansion and control failure. The integrated heavy-duty lift lever allows for mandatory manual testing, while the top-guided disc assembly maintains precise alignment for a tight seal after discharge. This Kunkle model 537 valve is National Board certified, meeting strict HV designator requirements for commercial and industrial boiler applications.

• High Discharge Capacity: Rated for 4,312 PPH to protect large-scale hot water and steam systems.
• Robust Material Selection: Bronze body and stainless steel spring provide superior corrosion resistance and longevity.
• ASME Unified Protection: Dual-purpose design relieves pressure from thermal expansion and over-firing conditions.
• Field Reliability: Features a pivot between the disc and spring to compensate for side thrust and ensure seat tightness.
• Ease of Maintenance: Equipped with a heavy-duty lift lever for routine safety inspections and verifying valve operation.

What is the maximum temperature rating for this valve?
The Kunkle 537 series is typically rated for temperatures up to 250°F (121°C), suitable for most standard hot water boiler configurations.

Can this valve be installed horizontally?
For proper drainage and to ensure the set pressure remains within tolerance, this valve must be installed in a vertical position with the spindle upright.

Does this valve meet National Board requirements?
Yes, the 0537-E01-HM0100 is National Board certified and carries the ASME "HV" stamp for Section IV heating boilers.

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