Matco-Norca offers its Tankless Water Heater Kits for residential and commercial applications consisting of separate hot and cold valves with pressure relief valve included. Hot and cold valves are available in union x threaded or union x solder ends with an integral 3/4” FNPT relief valve port. Made of brass and steel with an EPDM O-Ring, they carry a 600# non-shock rating. Both valves have a full port, 1/4-turn design, blowout-proof stem and an integral hose-end drain/purge port and cap. The companion 3/4” pressure relief valve is a 150#, and designed specifically for protection of hot water supply systems.