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SylvanLMP.
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MasterPlumbers
Valve started leaking, dribbles, last nite. system is only 2 years old. the system is in a unheated garage with no “blanket” around the tank. Could a cold night cause the tank pressure to exceed the valve’s max pressure?
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At night water main pressure NORMALLY increases do to less usage
What could be happening is as the pressure increases the relief valve discharges slightly.
You should contact a licensed Plumber to check this system and possibly install an expansion tank.
If left unchecked over time this added thermo stress could weaken this tank enough to rupture.
Have a good day.
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