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The Mueller Streamline b33752-400 is a refrigerant pressure relief valve rated at 400 PSI, designed for use in refrigeration and air conditioning systems. It features a 1/4 inch NPTF male inlet connection and a 3/8 inch flare outlet connection, making it compatible with a wide range of residential and commercial HVAC-R installations. This valve serves as a critical safety component in any refrigerant circuit. Its job is to release excess pressure before it can damage compressors, coils, or other system components. HVAC technicians and refrigeration mechanics rely on pressure relief valves like this one to keep systems operating safely within design limits. The b33752-400 is a direct replacement for the AH15501 pressure relief valve, allowing for straightforward drop-in serviceability on existing equipment. Mueller Streamline is a trusted name in the HVAC and refrigeration supply industry, and this valve reflects the quality and reliability that service professionals expect. The 400 PSI pressure rating suits many standard refrigerant systems, including those using R-22, R-410A, R-404A, and similar refrigerants. The male pipe thread inlet threads securely into a valve body, manifold, or pressure vessel port, while the flare outlet allows for clean, leak-resistant tubing connections commonly used in refrigerant line work. Whether you are performing a warranty repair, replacing a failed relief valve, or completing a new installation, the b33752-400 delivers a dependable solution. It is sold as a single unit and is stocked for immediate service use. Keep this valve on hand as part of a complete refrigeration service kit for faster job completion and reliable system protection.
The Mueller Streamline b33752-400 is a 400 PSI refrigerant pressure relief valve with a 1/4 inch NPTF x 3/8 inch flare configuration, offering reliable overpressure protection and direct replacement compatibility with the AH15501.
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