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Matco-Norca has announced the arrival of its Tankless Water Heater Isolation Valve Kit. The 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. The kits are available with 3/4-inch IPS union water heater connections and are NSF372, NSF61, NSF14, cUPC and IAPMO Z1157 approved. These Isolation Valve Kits facilitate an efficient installation and effortless maintenance on tankless water heaters.