By integrating these DPDT load contacts

ensuring exceptional durability in closed-loop systems

always verify chemical compatibility for high-pressure CO2 or ammonia systems

This specific York circuit board replacement serves as the direct upgraded successor to the 331-03478-002

Resideo V4044A1001 Zone Valve 318518-761 By integrating these DPDT loadThe Resideo V4044A1001 is a robust 120Vac three way diverting zone valve designed for hydronic systems requiring precise flow control between two different circuits. Engineered with a 1 2 inch flare connection and a 4. 0 Cv flow coefficient, this unit effectively manages fluid temperatures ranging from 40F to 200F. The construction features a durable brass body, a stainless steel stem, and EPDM rubber packing O rings to ensure long term seal