Pressure Relief Valve Replacement: Drain Boiler First
LESLIE: Fred in Connecticut, you’ve got The Money Pit. What can we do for you?
FRED: Yes, my question was is it necessary to drain the boiler down in order to change the release valve?
TOM: Yes. It is, actually. Because there is no valve between the boiler and the release valve for a very good reason. Because if there was a valve and you over-pressured the boiler, it – you’d have no way of getting to the release valve. So yeah, you’re going to have to drain the boiler down below that point to replace the boiler pressure relief valve. Make sure when you replace the valve, Fred, that you put in the right size valve because boilers have much smaller valves. They’re usually 30-pound valves compared to water heaters which have 150-pound valves. So make sure you put the right one in so you stay safe.
Fred, thanks so much for calling us at 888-MONEY-PIT.