Hot Water Heater Check Valve

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1 some municipalities require a check valve to prevent the flow of water from the house back to main.

Hot water heater check valve.

Water heater temperature and pressure relief valves or t p valves are a safety feature found on all tank water heaters. A faulty check valve at the hot outlet could also reduce minimize or prevent adequate pressure and flow from reaching the hot faucets. 2 a check valve is used when a recurculating system is used to prevent long waits for hot water at fixtures far from the heater. Without two check valves the system will not work properly.

One on the cold water supply to the water heater before the connection of the recirculating piping and the other on the recirculating piping after the last connection of a hot water fixture. Now a expansion tank is required. Water heaters come equipped with a temperature and pressure relief valve also known as a tprv. What was just described is an installation where two check valves are necessary.

A heat trap with the piping should be installed if the hot water leaving the water heater travels upward and or horizontal. A standard water heater does not require a check valve. Once a check valve is installed the hot water system becomes a closed system causing thermal expansion. The valve should always be in good working order to ensure the water heater is safe in the event of extreme pressure buildup.

There are at least 2 possible reasons for a check valve on the inlet of a hot water heater. Some water heaters have a check valve located at the cold water inlet to the heater but since you re able to fill the heater and see it draining a check valve at this location is probably still viable. Amazon s choice for hot water check valve sharkbite u2016 0000lfa 3 4 inch x 3 4 inch brass check valve push to connect copper pex cpvc 4 8 out of 5 stars 138.

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