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Old 03-04-2022, 09:26 AM   #1
Senior Member
Join Date: Nov 2019
Posts: 1,466
why do I need a hot water tank pressure valve?

Reading the thread about needing a water pressure regulator so you don't burst your plumbing with campground pressures got me to thinking.

The safety value on the hot water tank doesn't release until 150 psi. If our plumbing will leak well below that (if you believe what people post), why have it set that high?

Or just maybe the engineers that really know their stuff know your plumbing is very capable of tolerating high pressures so to prevent an explosion they mandate a 150psi safety valve.

Safe travels
2019 F150 4X4 7050 GVWR 1903 payload
2018 Avenger 21RBS 7700 GVWR
Mike134 is offline   Reply With Quote
Old 03-04-2022, 09:42 AM   #2
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Join Date: Aug 2013
Location: Pincher Creek, AB
Posts: 944
If the tank is filled, then is turned on to heat the water, and some inadvertently closes the valves on the tank it becomes a dangerous situation with no or a failed relief valve. Particularly if the heating controls malfunction and heat the water to boiling.
Camped: 2024 (Days/Nights) - 16/13
2023 (D/N) - 34/27, 2022 (D/N) - 41/33, 2021 (D/N) - 37/29, 2020 (D/N): 58/49

TT: 2020 26' Hemisphere 26BHHL
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glen1971 is offline   Reply With Quote

hot water, pressure, tank, valve, water, water tank

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