Whether you are performing a steam boiler pressure control replacement or a new install

While optimized for KMC VEZ valves

OEM Compatibility: Precision-fit for A

50" WC pressure switch designed specifically for Lennox

Mueller Industries A17939 Check Valve 323613-751 Whether you are performing aThe Mueller Industries A17939 is a high performance 7 8" Magnetic Check Valve designed for critical backflow prevention in commercial refrigeration and air conditioning systems. Engineered with a hermetically formed solid copper body, this valve eliminates potential leak paths, ensuring system integrity under high pressure conditions up to 800 PSI (55 bar). The internal magnetic mechanism provides a positive seal with a minimum pressure differential