Its graphite construction ensures exceptional thermal stability and resistance to corrosive condensate

designed to handle the high operating pressures of R410A without the performance drift common in universal aftermarket components

reducing the risk of system shutdowns caused by weak flame rectification

significantly improving overall system efficiency

allowing your unit to transition seamlessly between heating and cooling cycles

Resideo V4043A1002 Zone Valve 319848-301 Its graphite construction ensures exceptionalThe Resideo V4043A1002 Zone Valve is a reliable, high performance solution for controlling the flow of hot or chilled water in closed loop systems. This 120V hydronic zone valve features a 1 2 inch flare connection and is designed with a normally closed configuration, utilizing a spring return to close mechanism for fail safe operation. Built for durability in demanding environments, it incorporates a brass body, a corrosion resistant stainless steel