Here is what that is.
It is an expansion tank installed on the water supply pipe to the water
heater. The purpose of it is to deal
with the thermal expansion of water as it heats up in the water heater. It prevents water pressure from getting too
high. IF water pressure gets high enough
it can damage valves in plumbing fixtures, joints in supply pipes and even the
water heater itself.
Did you know that Thermal expansion always occurs in water
heaters? Like most substances in nature,
water expands as it is heated. This
happens over and over every day inside of your water heater after some hot
water has been used in the house, and cold water flowing into the water heater
is heated.
We wanted you to know more about the purpose of this
invaluable appliance sitting all alone (and working hard) in your garage. At All Home Plumbing we know all about water
heaters in the Chattanooga area.
Eventually they need to be repaired or even replaced. When that time comes call us at All Home
Plumbing. That’s (423) 598-1466.