Mueller Streamline a15504-300 Brass Pressure Relief Valve 300 Psi 1/2 Nptfe X 5/8 Flared

Product Description

The Mueller Streamline a15504-300 is a straight-through brass pressure relief valve designed for use in refrigeration, HVAC, and plumbing systems where precise pressure control is critical. This valve features a 1/2 inch NPTFE inlet connection and a 5/8 inch flared outlet connection, making it compatible with a wide range of copper tubing and refrigerant line setups commonly found in residential and commercial HVAC installations. The a15504-300 is factory set to relieve at 300 PSI, providing a reliable safeguard against dangerous overpressure conditions in sealed systems. The adjustable operating range spans 150 to 700 PSI, giving technicians flexibility across a broad range of system pressures. The temperature rating runs from -40 degrees F to 300 degrees F, making this valve suitable for both low-temperature refrigeration circuits and higher-temperature plumbing applications. The all-brass body construction delivers long-term corrosion resistance and durability in demanding environments where moisture, refrigerants, and varying pressures are constant factors. At 4.2 inches in width and weighing 0.84 pounds, this compact valve is easy to handle and install in tight spaces. HVAC technicians, refrigeration mechanics, and plumbers rely on pressure relief valves like the a15504-300 to protect compressors, condensers, and pressurized lines from catastrophic failure. The straight-through flow design minimizes pressure drop across the valve, helping maintain system efficiency. Mueller Streamline is a trusted name in fluid control products, and the SafetyMaster line is built to meet the reliability demands of trade professionals. This valve ships as an individual unit and is ready for immediate installation in new builds or service applications.

• Factory set at 300 PSI with an adjustable range of 150 to 700 PSI for versatile system protection
• Brass body construction resists corrosion and withstands temperatures from -40 degrees F to 300 degrees F
• 1/2 inch NPTFE x 5/8 inch flared connections for straightforward integration with copper refrigerant and plumbing lines

Product Highlights

The Mueller Streamline a15504-300 SafetyMaster pressure relief valve offers dependable overpressure protection in a durable brass body, with a 300 PSI factory setting and a wide operating range suited for HVAC, refrigeration, and plumbing applications.

Product Information

Standard Information

• Brand: MUELLER STREAMLINE
• Manufacturer Part Number: a15504-300

Technical Specifications

• Inlet Connection: 1/2 inch NPTFE
• Outlet Connection: 5/8 inch Flared
• Pressure Setting: 300 PSI
• Pressure Range: 150 to 700 PSI
• Temperature Range: -40 to 300 degrees F
• Body Material: Brass
• Width: 4.2 inches
• Weight: 0.84 pounds
• Flow Design: Straight Through
• Pack Size: 1 Each