Question about Watts Regulator Temperature and Pressure Relief Valve 40XL-4, 1"
Even a small amount of crud on the rubber washer/sealer can cause the valve to seep. Some valves can be taken apart and cleaned but it will be better to replace the valve. They can be found on line for around $12 or more. You will have to shut off the water in take valve and drain most of the system unless you have a main line shut off valve so the system wont drain back into the boiler. These valves are usually set at 30PSI.
Posted on Oct 16, 2013
SOURCE: boiler leak
Hi, it appears you have a defected relief valve. you can try one solution. lift the handle on the relief valve and let some water out. sometimes that can flush out materials thats blocking the stem in the valve. if it's still leaking it must be replace.
If this doesn’t work for you please write back. Thanks,
Posted on Nov 23, 2008
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