The legislation requires those charged with installing hot water systems Gold Coast wide and across Queensland to ensure that a tempering valve is fitted for:

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You can tell when the storage tank needs some more air when the volume of water delivered quickly is not very much and when you have run it out the storage tank is still heavy then the storage tank air charge needs topping up.

Due to the large volume of air a bicycle air pump will tank a long time to pump up the air so a compressor or car type pump is more suitable.

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In a nutshell, that's the heart and soul of Queensland's tempering valve legislation - preventing crippling, scarring and agonising hot water injuries. For indoor installations, especially for high-rise living in the Gold Coast, hot water systems are also:

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Although we're concerned about scalding-hot water, a major sign of valve failure or problems could actually be a stone-cold shower or bath. If a failing hot water tempering valve is the culprit, the next stream of water could be the dangerous one.

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However, the responsibility is on the homeowner's shoulders to watch out for the most common signs that they may be dealing with a faulty tempering valve:

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If your hot water tap is completely turned off and warm water is still dripping out, it might not be the washer - it could be the tempering valve. This crucial component features a ball-type mechanism that can become unseated and ultimately completely dislodged.

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As your tempering valve ages, the accuracy of the detection and control of water temperature can suffer - especially if the hot water system isn't a modern one. But while newer valves are better protected with temperature-balancing features, a clear sign that something's amiss is when your warm shower suddenly gives you a blast of really hot water, then it goes a bit cold, then it returns to normal.

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It would be a brave soul to argue against the efficacy and importance of the humble hot water tempering valve. No idea what it is, what it's for, and why the Queensland government cares so much that it's written legislation about it? Read on:

But even with all that legislation in place, the Queensland Building and Construction Commission reports that scalding injuries in bathrooms and showers continue to occur, highlighting the need to urgently detect and address faulty hot water tempering valves.

The ideal pressure for a completely empty storage tank is 6 to 7 psi (45kpa) air pressure but because most air pressure gauges don't go down that low pressurise past the 10psi mark and then bleed off excess pressure back to 10psi or slightly less and leave it at that.

Special note, the air valve on these storage tanks is set lower into the valve than a car tyre valve so be sure you have pushed the pump valve connector on far enough.

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In just about every case, the government requires that hot water systems installed in the Gold Coast and beyond are completed with a temperature control device - which, in practical terms, is a hot water tempering valve. The way it works is simple and yet ingenious: it mixes the hot water with cold water to produce water that won't scald you, your kids and other vulnerable people.

Pressure reducing valves are devices which, when installed on a private plumbing system, reduce and stabilise the inlet pressure from the water mains.

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Another thing you do not want to experience is low hot water pressure. Over time, and especially if your system is 5+ years old, hot water tempering valves can get clogged with mineral deposits and other water 'gunk' and contaminants. These relatively inexpensive valves also suffer from wear and corrosion, so a regular inspection is a very good idea. Plus servicing your tempering valve and your system, in general, can prolong the lifespan of your hot water system.

Turn your reverse osmosis system mains water in-feed water supply off, turn the ball valve on the top of the storage tank off and disconnect the tubing that supplies water to and from the storage tank.

Take the tank outside and open the tank ball valve to release any water pressure that is there. With the water valve in the open position start to put compressed (pump) air into the air valve, some water may come out as this is done, if so continue putting in the air gently until no further water is expelled from the tank ball valve.

Pressurising the storage tank can also be done without disconnecting the tank. Turn the in-feed mains supply off, open the faucet and the storage tank ball valve and run all water pressure out via the faucet. Start putting in the air via the air valve and pressurise as per below.

Re-connect the storage tank to the system, turn the mains in-feed supply back on and allow about 1 hour for the tank to re-fill. If the air charge is quickly lost again then either the tank has failed or the air valve is faulty and needs replacing. If water comes out the air valve the tank has failed internally and needs replacing.

Noticed any of those signs of a failing tempering valve? If so, it's definitely time to get the full and safe functionality of your hot water system checked - and In Deep Plumbing will be more than happy to assist! We're the Gold Coast plumbing specialists in testing, repairing, replacing and installing hot water tempering valves, so get in touch today for a speedy response.

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