20 Most Recent Watts Regulator Temperature and Pressure Relief Valve 40XL-4, 1" Questions & Answers

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.

Watts Regulator... | Answered on Oct 16, 2013

Hello The 740 is NOT EVER!!! adjusted.It is factory set.It can be purchaced at any PRE-set rating from 30-75 LBS.You MUST match the rating of the old one.If in doubt use the 30# to be safe.

Watts Regulator... | Answered on Sep 09, 2010

Turn it clockwise to increase pressure on a watt's pressure relief valve. You will have to gradually adjust and check pressure till you get it to desired pressure. You don't want to exceed safe pressure due to damaging water lines or fixtures.

Watts Regulator... | Answered on Jun 15, 2010


Watts Regulator... | Answered on Nov 13, 2009

On the top of the regulator is a stem/threaded rod with two nuts on it.

Loosen the bottom nut and that will allow you to turn the stem, which adjusts the pressure.

clockwise usually increases pressue, although I have encountered PRV's (Pressure Reducing Valve) that decreases pressure with a clockwise turn.

When A PRV starts malfuntioning, they often cannot be adjusted and need to be replaced or rebuilt.

Watts Regulator... | Answered on Oct 03, 2009

That depends on the voltage. Divide watts by volts to get amperes.

Watts Water... | Answered on Dec 09, 2016

There is a pipe to the outside. Is this letting out water drip by drip? If so it's the pressure relief valve in the boiler. Trace the pipe back to find. Some of these valves can be dismantled and cleaned once removed. It is usually bits of deposit inside.

Watts Water... | Answered on Sep 18, 2014

As a Backflow Tester, I have to recommend calling a certified Tester with experience in repairs. There are a few thing that could cause this such as debris stuck on the #1 Check disc (which usually means repair parts) or a nick on the Relief Valve seat. The rv seat is stainless steel and just pops in the bottom of the valve with an o-ring seal but unless you have experience at this I suggest you leave it to a professional as you could easily damage other parts or reassemble improperly.

Watts Water... | Answered on Oct 12, 2012

A typical answer for this is to initially unplug the water warmer from its electrical stockpile. Next, evacuate the spread by unscrewing the four fastens that hold it place. The indoor mounted 45HI models have a strip link interfacing the showcase to the PC board. It would be ideal if you be cautious as to not harm this wire. You should disengage it utilizing the dark connector found 6 crawls from the showcase itself.
Once inside the water radiator, you will see the PC board situated on the left-hand side, at the base corner of your warmer. Next, expel the two screws on the essence of the PC board at the base. Next, detach and reconnect the majority of the wires each in turn, which is associated with the PC board to confirm that everything is situated appropriately. You would then be able to sink the PC board back spot, supplant the spread, plug up the power supply, and endeavor to run the water radiator as typical.
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Water Heaters | Answered on Oct 15, 2019

Google (dearborn)(DRC40AN)(manual) without parens OR contact Dearborn directly to request it.

Water Heaters | Answered on Oct 13, 2019

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