Description
Mueller Industries A15504-650 Relief Valve Overview
The Mueller Industries A15504-650 is a 650-pound-rated relief valve designed to provide dependable overpressure protection in refrigeration and HVAC systems. Featuring a 1/2″ Male Pipe Thread (MPT) inlet and a 5/8″ Flare (FLR) outlet, this valve integrates seamlessly into a wide range of system configurations where pressure relief is critical to safe and efficient operation.
Key Features
- Pressure rating: 650# (650 PSI)
- Inlet connection: 1/2″ MPT (Male Pipe Thread)
- Outlet connection: 5/8″ FLR (Flare)
- Designed for refrigeration and HVAC system overpressure protection
- Mueller Industries quality construction for long-lasting reliability
- Compact design for easy installation in tight spaces
Application
This relief valve is suitable for use in refrigeration systems, HVAC equipment, and other pressurized fluid or gas applications requiring a reliable pressure relief device. The MPT-to-flare configuration makes it compatible with standard copper tubing and threaded pipe assemblies commonly found in commercial and residential HVAC/R installations.
Why Choose Mueller Industries
Mueller Industries is a trusted name in HVAC and refrigeration components, known for manufacturing high-quality brass and copper fittings, valves, and related products. The A15504-650 upholds that tradition, offering contractors and technicians a dependable solution for system safety and code compliance.







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