Click here to Find a Contractor in your area.
In fairness to all, we don't discuss pricing on the Wall. Thanks for your cooperation.
Need to contact us? Visit

Discharging boiler pressure relief valve

garbidgarbid Member Posts: 10
The pressure relief valve on my Burnham boiler (for a gas-fired hot water home heating system) has begun to discharge slightly - not full force by any means, but a heavy drip - each time the boiler temp and pressure reach 200 degrees/35psi, shortly before the furnace cuts off, at which point the discharge stops until the next cycle.  I drained and recharged the expansion tank routinely two months ago as I do once each heating year (there was no discharging from the PRV at that time) and the Watts pressure relief valve was new about 5 years ago.  No modifications have been made to any settings on the heating system or boiler and I've never experienced this discharge before; it only started about 3 weeks ago.  Any suggestions as to what might be the cause?  Thanks.
This discussion has been closed.


It looks like you're new here. If you want to get involved, click one of these buttons!