Specification History

SWS Version Created Specification ID Title Specification Objective Supporting Materials Rationale Status
Version 2020 08/14/2020 - 14:28 7.0302.6l Expansion tank

Install an expansion tank anytime a storage water heater is supplied with cold water that passes through a check valve, pressure reducing valve or backflow preventer

Connect the tank to the cold water supply line at a point that is downstream of all check valves, pressure reducing valves and backflow preventers

Size thermal expansion tanks in accordance with the tank manufacturer's instructions and applicable code (e.g., IRC, IBC)

Protect tank and connected piping from expansion damage or leaks

Black Line
Version 2020 08/14/2020 - 14:28 7.0302.6l Expansion tank

Install an expansion tank anytime a storage water heater is supplied with cold water that passes through a check valve, pressure reducing valve or backflow preventer

Connect the tank to the cold water supply line at a point that is downstream of all check valves, pressure reducing valves and backflow preventers

Size thermal expansion tanks in accordance with the tank manufacturer's instructions and applicable code (e.g., IRC, IBC)

Protect tank and connected piping from expansion damage or leaks

Black Line