Isolation Kit 3/4" with Expansion Tank
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Calefactio
Isolation Kit 3/4" with Expansion Tank
Calefactio’s service valves kit is designed for tankless water heaters under 2 gallons. It combines two isolation valves including drains, a pressure relief valve, a union tee, and a port on the cold side for an expansion tank. The expansion tank function is to absorb the increased volume of water which results from the heating process, thereby keeping the system’s pressure below the relief valve setting. It also acts as a water hammer or shock absorber to absorb a sudden change in fluid velocity after the sudden closing of a faucet.
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