Mueller Industries A17938 Check Valve 321894-709 This specific model is specialized

This specific model is specialized for fuel gas service

this unit is the designated York direct replacement for that specific 460/480V model

ensuring a secure airtight seal for pressure sensing tubes

Reliable Fail-Safe: Professional-grade spring return functionality ensures the damper returns to its normally closed position immediately upon power loss

and agricultural fluid control

Mueller Industries A17938 Check Valve 321894-709 This specific model is specializedThe Mueller Industries A17938 Check Valve is a veteran grade 3 4 Magnetic Check Valve engineered for high performance backflow prevention in commercial refrigeration and HVAC systems. Unlike standard spring loaded designs, this CheckMaster magnetic check valve utilizes a magnetically operated poppet that eliminates the mechanical fatigue often associated with traditional springs. This design ensures a more reliable unidirectional flow with a pressure