Potable Water Expansion Tank Purpose

We offer a range of expansion tanks for potable and non potable applications.

Potable water expansion tank purpose.

When you turn on your kitchen faucet water is carried from the tank to your tap providing you with fresh water on demand. If water pressure gets to high it can damage valves in plumbing fixtures joints in supply pipes and the water heater itself. Inside the tank has a rubber diaphragm at around the mid point of the tank. An expansion tank or expansion vessel is a small tank used to protect closed water heating systems and domestic hot water systems from excessive pressure.

Reverse osmosis systems work slowly purifying water one drop at a time. Water expands by roughly 2 as it heats up from 50 f to 120 f. The expansion tank s purpose is to protect your house s hot water system from excessive pressure which can cause damage to fixtures your water heater lines and or fittings. When water is heated it expands due to a phenomenon known as thermal expansion.

Expansion tanks help reduce water hammer and help protect the plumbing system from stress and damage which leads to longer tank life. A water storage tank collects water and stores it for later use and timely access. When your water thermally expands a water heater expansion tank prevents unwanted increases in pressure. So when the water pressure gets too high it will flow into your expansion tank instead of damaging your home s plumbing valves fixtures and joints and potentially causing a burst line with immeasurable damages and cost.

The tank is partially filled with air whose compressibility cushions shock caused by water hammer and absorbs excess water pressure caused by thermal expansion. Potable water expansion tanks. You install the expansion tank down. These potable water expansion tanks feature a 100 butyl diaphragm and plastic liner to separate the system water from the tanks air precharge.

And the tanks are finished with appliance quality paint to help prevent external corrosion. It is designed to handle that excess water that builds up. Expansion tanks are designed to safely absorb the excess water created and prevent relief valves from triggering. The expansion tank is designed to handle the thermal expansion of water as it heats up in the water heater preventing excessive water pressure.

Pressurized air goes below the diaphragm in the bottom half of the tank and water flows in and out of the top half of the tank. The system has a stainless steel sleeve to prevent corrosion something no other manufacturer offers. To do their job these tanks must be properly located sized piped into the overall system and should be checked annually.