What is the difference between a pressure relief valve and a thermal expansion relief valve?

May 12, 2023 ... They look like a small propane tank installed above a water heater. And, while they look simple enough, they offer a critical safety function. Sep 14, 2022 ... ... information provided here may apply to your specific water heater. ... tank attached to your water heater known as an expansion tank. When ... Inspectors are not required to remove water heater covers to inspect the water heater. ... (iv) the lack of a visible expansion tank when a pressure ... Jan 7, 2018 ... ... expansion tank to your “replace a water heater” project. It's incredibly interesting and informative, but if it doesn't apply, feel free to ... Apr 1, 2024 ... Learn more: What is a water heater thermal expansion tank? How to ... Sizing a tank properly requires specific information about your home and ... Water Worker Water Heater Expansion Tanks safely control pressure ... Provide well tank and water heater expansion tank information including why they are needed. • If you do not have a thermal expansion tank on your hot water heater then it could ... See below under Thermal Expansion Tanks for more information. Note: This article is for informational purposes only. Plumbing work should only be done by a licensed, insured professional. Legacy Plumbing is not responsible ... Dec 4, 2006 ... We maintain an informational Web page for each NRTL, which details its scope of recognition. ... Household Electric Storage Tank Water Heaters. UL ... Dec 15, 2019 ... My understanding is that the expansion tank is there to relieve back-pressure coming from the water heater. ... informative by far. Thanks ...