Dielectric Water Heater Supply Valves simplify the installation and service of any water heater, combining a dielectric union, a ball valve and a ½" FIP vacuum relief valve port into a single forged dezincification resistant brass body. The product features an extended arm with a ¾" FIP port and ¾" capped hose rain. Models are available with or without the vacuum relief valve and your choice of FIP, MIP, sweat, press or push ends to connect to system piping.