How do I know if my potable expansion tank is bad?

You can also check your expansion tank’s pre-charge pressure by knocking on the side of the tank with your knuckles to determine if it’s full of air or water. Pre-charge pressure that’s too low may be indicated when the tank is full of water. Low pressure can cause too much water from entering the tank.

Where does a Watts expansion tank need to be installed?

Watts offers a variety of water relief solutions that can be installed on the system piping, in a water closet or on an outside faucet . These products must be piped to a suitable drain or discharge location . General Information 4 Expansion Tanks How a Diaphragm Expansion Tank Works When water is heated in a closed system, it expands .

Why does my water expansion tank keep leaking?

up vote 2 down vote A water expansion tank gives water a place to expand in a closed system (frequently found with boilers, or home water supplies with a check valve). Otherwise, heated water cannot expand and instead increases pressure until some component of the system leaks or explodes.

How to size a Deta potable water expansion tank?

TO PROPERLY SIZE A WATTS REGULATOR SERIES PLT OR DETA POTABLE WATER EXPANSION TANK: Enter the appropriate information in the boxes below.. The set pressure of the water pressure reducing valve or maximum system pressure. 40psi Air Charge is Standard. Never exceed 80psi Pre-Charge.

Do you need a drain for a thermal expansion tank?

The Watts full line of thermal expansion tanks are considered water containment devices . These products require no installation of discharge lines or drains . Water Relief solutions discharge thermally expanded water at a pressure setting that is below the setting of the water heater’s temperature and pressure relief valve .

What should I do if my expansion tank is leaking?

Once you identify the leak, you can then start the repair work. Before you begin the repair works of the leak on the expansion tank, switch off the power to your water heating system and disconnect all the electric plugs. If your water heating system is gas-powered, turn it off the gas feed.

What is the purpose of a PLT expansion tank?

Potable Water Expansion Tanks Series PLT Potable Water Expansion Tanks are designed to absorb the increased volume of water created by thermal expansion and to maintain balanced pressure throughout the potable water supply system.