Matco-Norca is pleased to announce the arrival or our Tankless Water Heater Isolation Valve Kit. Our TWHK04T Brass ball valve kit consist of one cold valve, one hot valve, and one pressure relief valve. Each assembly features union connections, full port quarter turn valve design and integral hose end drain valves with purge port. It is available with 3/4” IPS union water heater connections and are NSF372, NSF61, NSF14, cUPC & IAPMO Z1157 approved. These Isolation Valve Kits facilitate an efficient installation and effortless maintenance on your Tankless Water Heater.