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AVG PTR25/850 25mm (1") 850kPa Commercial PTR / TPR Pressure Temperature Relief Valve

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    Click here to be notified by email when AVG PTR25/850 25mm (1") 850kPa Commercial PTR / TPR Pressure Temperature Relief Valve becomes available.
    Australian Valve Group (AVG) 850 kPa PTR 1" (25mm) Pressure and Temperature Relief Valve. Intended for commercial hot water service applications with a high kilowatt rating of 132kW.  Australian Watermark approved. 

    Pressure and temperature relief valves, known PTR valves are critical mechanical safety devices for all hot water services. The stick looking component is a temperature sensing probe to monitor the hot water service's temperatures. AVG PTR valve temperature probe is covered in a Teflon wrap to prevent any calcification build up overtime and to ensure long term accuracy. Inside the AVG PTR valve body, there is a piston mechanism that opens according to the pressure inside the water tank. 

    During the operation of the hot water services, the volume of the water will expand during heating cycles, as cold water heats up. This increased pressure can be dangerous if not regulated. The PTR valve regulates the pressure slowly dripping the water out of the tank in a controlled manner, usually via a discharge pipe into a drain or ground. Therefore, when the slow dripping is observed, it is just a perfectly normal PTR valve operation. 

    When there is a malfunction with the heating component or the thermostat in a hot water service, an uncontrolled heating can be extremely dangerous and explosions can occur catastrophically. PTR valve can detect this when the temperature and pressure exceed 99 deg or its preset pressure ratings. In this case, PTR valve will fully open and dump hundreds of liters of water to relieve the water heater tanks. The Kilowatt rating of the PTR valve refers to the rate that the PTR valve can dissipate this energy and this is regulated by Watermark and plumbing codes in Australia. 

    When a high kilowatt PTR valve rating is required in a commercial installation, a smaller sized 15mm or 20mm PTR valve must not be used as a cost cutting method for safety reasons. 

    Technical Details
      • Manufacturer: Australian Valve Group (AVG) 
      • Model: PTR25/850
      • Specifications:
        • Expansion Rating 132 kW
        • Pressure Rating: 850 kPa 
        • Temperature Rating: 93-99 deg
      • Thread Size: 1" BSP (25mm) Male MI thread
      • Physical Thread Measurement: 33.249mm internal/external thread diameter (Refer to the BSP sizing chart in the photo gallery)
      • Material: DR Brass Body; Stainless Steel Pressure Spring; Copper/Stainless Steel Element; Silicon Seals.
      • Intended Use: For commercial hot water service applications where high Kilowatt rating is required for the PTR valves.
      • SKU: PTR25/850

    Package Contents
    - AVG PTR25/850kPa PTR Valve
    - Package Weight 900g

    All shipping is via Australia Post. Free local pick up is offered.

    2 year replacement (parts only) warranty from purchase date is offered by All Plumbing Online. The original item must be returned for assessments. 

    Return Policy
    30 days worry free return is offered for peace of mind. All returned items must be complete and in its original packaging. 

    Contact Us
    All Plumbing Online is a local business based in Brisbane, run by an experienced engineer who works as a consultant to the plumbing industry at manufacturers' level. I used to operate my own plumbing company also and can answer any of your plumbing related questions, such as fitments, sizing or just chatting in general for advice. Feel free to drop me an email or a call.

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