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Post Info TOPIC: HWS Pressure Relief Valve
KM575


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HWS Pressure Relief Valve
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We have a Suburban HWS and during a recent trip the Pressure Temperature Relief valve started dripping and is gradually getting worse. I bought a new valve but are having difficulty in getting the old one off. By the state of the anode I replaced recently I am guessing that there maybe some corrosion to the internal thread of the PTR valve. Have been soaking in WD40 for some time but still wont budge. I am worried that if I give it a real go, I will probable stuff the threads completely. Anyone got any ideas would be appreciated thanks



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Joda


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Try a plasticine dam around it & use penetrene overnight, judicious use of a small gas torch around the area may help, could soften any sealant that was used on fitting, I find penetrene still one of the best, Joda.

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J. Price
PeterInSa


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I would also turn the HWS on, let it heat the tank up, then TURN the HWS OFF ( power and gas) and try again maybe the extra heat on the thread will help to get the old valve out.

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Joda


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Make sure you relieve the pressure if you switch the heater on before you unscrew the relief valve, open the hot tap & relief valve!

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J. Price
rgren2


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Reducteur Super release agent is the best stuff to loosen frozen nuts or studs, not cheap but very effective.

www.bunnings.com.au/reducteur-300g-super-rust-release-agent_p6100255

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KM575


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thanks everyone for your suggestions, will let you know the outcome

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