Mueller A17937 Check Valve

The Mueller A17937 Check Valve is a heavy-duty 5/8 Magnetic Check Valve designed for reliability in demanding commercial refrigeration and HVACR systems. Engineered as part of the Mueller Streamline CHECKMASTER series, this valve utilizes a magnetic closure system that replaces traditional spring-loaded mechanisms. This design facilitates a near-zero pressure drop during flow and ensures positive shut-off without the risk of mechanical spring fatigue. Housed in a hermetically formed copper body, the A17937 maintains a maximum operating pressure of 800 psig, making it a staple for high-pressure HFC, HCFC, and HFO refrigerants, including R-410A.

For service technicians in the field, the Mueller Industries A17937 offers versatile installation, operating effectively in both vertical and horizontal positions. The internal assembly features a 30-mesh stainless steel screen to protect the seat from system debris, while the DuraForm technology secures internal components for long-term backflow prevention and leak integrity. With a temperature range of -40°F to 300°F, this ODS solder connection valve is built to handle extreme thermal cycles without compromising the magnetic seal or refrigerant flow efficiency.

• Magnetic Sealing Technology: Eliminates spring failure points and provides a reliable seal even in low-pressure differential scenarios.
• High-Pressure Rating: Rated for up to 800 PSI, fully compatible with modern high-pressure refrigerants and POE oils.
• Integrated Protection: Features a built-in 30-mesh stainless steel strainer to prevent contaminants from fouling the valve seat.
• Flexible Installation: Hermetically sealed copper construction allows for multi-positional mounting without affecting performance.
• DuraForm Construction: Utilizes advanced internal component securing to ensure zero leak potential and structural rigidity.

• Can this valve be installed in any orientation? Yes, the magnetic design allows the A17937 to function in both horizontal and vertical lines, though flow must always follow the directional arrow.
• Is this valve compatible with R-410A? Absolutely. The 800 PSI rating and 300°F maximum temperature limit make it ideal for high-pressure R-410A and subcritical CO2 applications.
• Does the magnetic disk require high pressure to open? No, the magnetic field is calibrated to allow the valve to open with minimal pressure differential, maximizing system efficiency.

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Disclaimer: While we strive for 100% accuracy, product data and specifications are subject to change. Please contact our team to confirm compatibility or technical details before purchasing.