Mueller A17937 Check Valve 318172-701 This unit serves as the

This unit serves as the direct replacement for 8403-058 and 8403-059

For technicians performing boiler maintenance

to maintain a hermetic seal against combustion byproduct leakage

it is ideal for high-pressure burner manifolds and specialized appliance setups

this component is sized at 9" x 7" and is specifically intended for standard 9x7 centrifugal housing configurations typically found in York and Coleman air handlers

Mueller A17937 Check Valve 318172-701 This unit serves as theThe 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.