Mixing valve water heaterproblems

The APO PTR valve features the same threads, fitments and similar physical sizes with many other PTR valve manufacturer brands such as Reliance' HT55, AVG, Tomson, Nefa and Reflex. This makes the APO PTR valve a perfect direct replacement to an existing valve in an old hot water heater.

A functioning PTR valve is a requirement by law in Australia for safety as per explained above. A typical sign for a faulty PTR valve is when there is a large amount of water leakage in a stream, rather than a controlled dripping. The worn out or leaking PTR valve must be replaced immediately.

A quantity of hot water will discharge from the tank during this process. Personal Protective Equipment should be worn to prevent the risk of scalding.

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The PTR pressure temperature relief valve regulates the pressure caused by water volume expansions during normal heating cycles in a hot water service. The PTR valve relieves this increase in pressure by a controlled water dripping into a drain line typically of 2 to 5 litres per day depending on the hot water usage.

After replacing the tempering valve the warm water temperature will need to be checked to ensure correct operation. A reading of 48oC +/- 1.5oC should be obtained at the NEAREST warm water tap. NOTE: The reading obtained must be less than 50oC as required in AS 3500.4 clause 1.9.2.

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The PTR pressure temperature relief valve also acts as a mechanical protection device for the hot water services. In rare occasions of a faulty thermostat or heating element, the hot water service can overheat, building a dangerously high pressure and temperature inside. When this pressure or temperature exceeds the PTR valve's rating, it will dump hundreds of litres of water all at once as an emergency pressure relief. Usually a large puddle of water will be observed around the hot water services on the ground during this emergency water dumping. The PTR valve usually has a KW rating, which describes this emergency water dumping ability in terms the heat dissipating power. A larger PTR valve will usually have a larger KW rating and this KW rating is specified by local plumbing rules, especially in large commercial hot water systems.

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An optional PTR insulation jacket is available which can reduce the heat loss and improve the hot water services' overall thermal efficiency.

1st Choice Hot Water have very dedicated and highly trained technicians ready to repair, service and install any water heater system. Each technician has received training from the manufacturer and are fully licenced. With a response time second to none, and a large selection of spare parts on board, 1st Choice Hot Water will get your hot water running to its full capacity very quickly. We also have very competitive hot water system prices.

The APO PTR15/850 15mm (1/2") 850kPa PTR Pressure and Temperature Relief Valve, also known as TPR valve is used to regulate the water pressure inside hot water services, including heat pumps, electric, gas storage and solar water heaters across all mainstream brands in Australia such as Rheem, Vulcan, Rinnal, Dux, Aquamax, Thermann, Apricus and Solahart.