Description
Mueller Industries AG15504 Pressure Reducing Valve Overview
The Mueller Industries AG15504 is a heavy-duty Pressure Reducing Valve (PRV) engineered to deliver consistent, reliable downstream pressure control in HVAC, refrigeration, and plumbing applications. Rated at 350 PSI, this valve is built to handle demanding system pressures while protecting downstream components from overpressure conditions.
Connection Details
- Inlet Connection: 1/2″ NPT Female (NPTFE)
- Outlet Connection: 5/8″ Flare
- Connection Type: NPT Female x Flare — compatible with standard copper tubing and threaded pipe systems
Key Features & Benefits
- 350 PSI pressure rating for high-pressure system compatibility
- 1/2″ NPT female inlet for easy threaded pipe installation
- 5/8″ flare outlet for secure, leak-resistant tubing connections
- Designed to reduce and regulate inlet pressure to a safe, stable downstream level
- Durable Mueller Industries construction for long service life
- Compact design suitable for tight installation spaces
Typical Applications
- HVAC refrigerant line pressure regulation
- Plumbing and hydronic system pressure control
- Commercial and residential pressure management systems
- Downstream equipment protection in high-pressure piping systems
Why Choose Mueller Industries?
Mueller Industries is a globally recognized manufacturer of copper, brass, and plastic products for HVAC, refrigeration, and plumbing markets. The AG15504 reflects Mueller’s commitment to precision engineering, material quality, and field-proven performance — making it a trusted choice for HVAC professionals and contractors.







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