A water heater expansion tank typically lasts five to ten years. If you notice dripping water, mineral deposits on your pipes, decreased water pressure, or a change in water quality, it's best to check the health of your tank and consider a replacement.

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Installing a water heater expansion tank requires knowledge of local plumbing codes, working with very hot and high-pressure systems, and potentially cutting your home's water pipes. It's highly recommended that you call a professional for this job to ensure your home's water supply stays working correctly and protects against water damage.

Aaron Stickley is a licensed plumber with 15 years of experience in commercial, new residential plumbing, and residential service and repair. He started his own residential service and repair plumbing business. Aaron's articles about plumbing on The Spruce span four years.

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Pneumatic shut-off valves are used across various industries to safely manage and control the flow of high pressure or compressed air and gases. They can be used to block compressed air in an automation process or to isolate sub-systems when not in use. Pneumatic shut-off valves are designed to close off passageways and pipes within a pneumatic system, preventing the compressed air or gas from entering certain areas. This can be done for a variety of reasons, including as a safety procedure, to allow for system maintenance, or to improve the efficiency and economic impact of a system, reducing or limiting usage when it is not required.

Most modern-day water heaters are tankless, heating water on demand instead of keeping it stored, come with built-in thermal protection, or are installed within an open plumbing system. They don't usually need an expansion tank, but older models with traditional tanks and closed plumbing do.

A water heater expansion tank—or thermal expansion tank—is a small tank added to a water supply pipe. It acts as a safety device and minimizes the risk of pressure damage, bursts, and leaks in a home's plumbing system.

It activates when expanded hot water overflows from the main tank and pushes against an air cushion within the expansion tank, compressing the cushion and allowing water to flow in.

Once you have all the numbers you need, input the information into an expansion tank size calculator offered by brands Amtrol or Watts.

However, if you are confident in your plumbing skills and have a near-expert knowledge and experience, you can install a water heater expansion tank.

The price of a 2-4.4 water heater expansion tank on its own ranges from $40 to $200, and the cost of labor can fall anywhere between $50 and $150, depending on your area and the location and accessibility of your water heater tank.

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These could all indicate stress on your plumbing system or pressure needing to be regulated and released from your pipes more frequently than it should.

Traditional tank-style water heaters and boilers for home heating systems could face problems from this pressure over time unless measures are taken to prevent damage. A water heater expansion tank is a way to preserve the life of plumbing systems.

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2022721 — This calculator helps determine the expansion tank size needed for your plumbing or heating system.

Water heaters last about eight to 12 years. A thermal expansion tank reduces wear on the heater and can prevent a tank blowout, potentially extending its life.

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This alleviates the pressure of thermal expansion by giving the excess hot water a place to go. It also helps maintain consistent water temperature and pressure flowing through your home's taps.

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A closed plumbing system keeps water flowing one way, from your area's main supply, into your home instead of letting any flow back in the event of a pressure buildup. They are put in place to keep public water supplies clean and can be identified through check valves connecting the pipes and backflow prevention devices near your water meter or where pipes enter your home.

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A water heater is the fixture responsible for heating and storing the hot water flowing from every sink and shower in your home. A standard tank heater can stress your plumbing pipes when thermal expansion causes the hot water to take up more room in the tank.

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It is essential to ensure that your new water expansion tank is large enough to relieve the pressure from your main heater. Most homes need between two and five gallons, but the exact size will depend on the size of your water heater tank, the water pressure, and the starting and ending water temperatures.

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Shut-off valves are used across a wide variety of industries that use pneumatic processes, including paper manufacturing, pharmaceutical production, colouring applications and alkaline-based alumina slurry. They are also used in industries that use hazardous and toxic gases in their production processes as part of their high safety measures, allowing for the immediate shut off of any valves that carry hazardous substances to be shut off immediately.

If you have an older water heater, there are a few telltale signs you may need to install an expansion tank. Look for drips and leaks from your faucets, fluctuating water pressure, loud noises, and mineral deposits around your water pipes' fittings.