This high-flow ball valve is rated for a maximum differential pressure of 50 psi for quiet operation

the flame sensor rod is likely covered in soot or the ceramic insulator has cracked

simplify field calibration for HVACR pros

The Belimo B223 series is typically rated for a maximum differential pressure of 50 psi for quiet operation and a close-off pressure of 200 psi

Lochinvar & A.O. Smith 100172006 Gas Valve Els PW 17895 This high-flow ball valve isThe Lochinvar and A. O. Smith 100172006 Gas Valve is a critical 24V redundant combination control designed for high recovery commercial water heaters and boilers. This 3 4" NPT gas valve provides precise fuel regulation for gas fired equipment, ensuring stable manifold pressure and safe ignition sequences. Known in the industry as a direct replacement for VAL3204, this component is frequently found in Lochinvar Knight and A. O. Smith Cyclone series