Resideo NK300S-100 Valve 320735-701 designed to protect critical equipment

designed to protect critical equipment like pumps

What is the difference between the 'U' and 'H' in the part number

Rely on this robust replacement burner assembly to restore factory-spec operation and maintain the narrow manifold pressure tolerances required by modern condensing furnaces

ensuring a secure and streamlined connection to electrical conduit systems

Resideo NK300S-100 Valve 320735-701 designed to protect critical equipmentThe Resideo NK300S 100 Valve is a professional grade boiler feed combination valve designed for rapid system commissioning and robust backflow protection in closed loop hydronic heating systems. This high capacity 16 GPM unit integrates a testable double check backflow preventer, an adjustable pressure reducing valve, and dual shut off ball valves into a single brass housing. Built for high demand residential and light commercial applications, the