Description
Kunkle Valve 0537-D01-AHM0125 — ASME Section IV Steam Pressure Relief Valve
The Kunkle Valve 0537-D01-AHM0125 is a heavy-duty, ASME Section IV–certified pressure relief valve engineered for steam and hot water boiler applications. With a 3/4″ Female NPT inlet and 1″ Female NPT outlet, this valve is factory-set at 125 PSI and delivers a rated capacity of 3,364 lb/h (PPH) — equivalent to 3,364,049 BTU/h — making it well-suited for commercial and industrial hydronic heating systems that demand reliable overpressure protection.
Construction & Materials
- Body: Bronze construction for excellent corrosion resistance and long service life
- Seat: B584 alloy 8440 bronze seat for tight shutoff and durability under repeated cycling
- Spring: Stainless steel (SST) spring material for reliable performance across a wide temperature range
Connections & Pressure Rating
- Inlet: 3/4″ Female NPT
- Outlet: 1″ Female NPT
- Set Pressure: 125 PSI
- Capacity: 3,364 lb/h (PPH) / 3,364,049 BTU/h
Certifications & Compliance
- ASME Section IV certified — approved for steam and hot water boiler service
- Designed to meet code requirements for heating boiler overpressure protection
Applications
- Hot water heating boilers
- Steam boiler systems
- Commercial and industrial hydronic heating systems
- Replacement or new-installation pressure relief on ASME-rated boiler equipment
Why Choose Kunkle Valve?
Kunkle has been a trusted name in pressure relief and safety valves for over a century. The 0537-D01-AHM0125 combines proven bronze construction with a stainless steel spring and a precision-machined B584 alloy seat to deliver consistent, repeatable performance. Whether you’re servicing an existing boiler or specifying a new installation, this valve provides the code-compliant overpressure protection your system demands.
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