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heating/plumbing?

if pressure relief valve is stuck is boiler safe
john millward, July 2008
NO. GET IT CHANGED QUICK!!! A prv is one of the most important safety components within an unvented heating system. If it doesn't discharge and the system expands for some reason, you have a major problem - what happens when you put too much air into a balloon!?!?!?

Steve, July 2008