if cleaning with steel wool doesn't restore the microamp reading

The 441729-101 is sized specifically for 16x25 cabinets or 12

The 8-foot capillary tube and 3/8" x 5" sensing bulb offer significant installation flexibility

for these specific unit sizes

Optimized Heat Exchange: Integrated time delay relay logic manages the fan-on and fan-off sequences to protect the heat exchanger from rapid temperature shifts

Resideo V4044A1191 Zone Valve 328140-751 if cleaning with steel woolThe Resideo V4044A1191 Zone Valve is a heavy duty three way diverting valve designed for hydronic control in high demand residential and light commercial systems. Engineered with a 3 4" sweat connection and a 7 Cv flow capacity, this unit manages fluid distribution by diverting flow from a common inlet to either of two outlets. Operating at 120Vac, the motor features a spring return to Port A, ensuring a fail safe normally closed position for Port A