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Description
AVG PTR25-1000-LF 25mm 1000kPa Commercial PTR Pressure Temperature Relief ValveOverview Australian Valve Group (AVG) PTR25 1000 LF 25mm (1") 1000kPa PTR Pressure and Temperature Relief Valve (also known as TPR valve) is Australian Watermark approved and intended for commercial hot water service applications, with a high kilowatt rating of 132kW. Pressure and temperature relief valves, known PTR valves are critical mechanical safety devices for all hot water services. The temperature sensing probe monitors the hot water service's
Overview
Australian Valve Group (AVG) PTR25-1000-LF 25mm (1") 1000kPa PTR Pressure and Temperature Relief Valve (also known as TPR valve) is Australian Watermark approved and intended for commercial hot water service applications, with a high kilowatt rating of 132kW.
Pressure and temperature relief valves, known PTR valves are critical mechanical safety devices for all hot water services. The temperature sensing probe monitors 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
- Brand: Australian Valve Group (AVG)
- Model: PTR25-1000-LF
- Watermark License Number: 2639
- Expansion Rating: 132kW
- Pressure Rating: 1000 kPa
- Temperature Rating: 99°C
- Thread Size: 1" BSP (25mm) Male MI thread and female FI thread
- Thread Size Physical Measurements: 33.249mm external male and internal female thread diameter (refer to the BSP sizing chart in the photo gallery)
- Insulation Jacket Included
- 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: AVG-PTR25-1000-LF
Package Contents
- AVG PTR25-1000-LF kPa PTR Valve 25mm (1") 1000kPa
- Package Weight: 900g
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Exchange/Return Notes
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Product Reviews
★★★★★ 5
Pick this one
Format: Paperback
One of my favorite review books. Used mostly while in the program to supplement the learning. Have recommended a lot.
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Reviewed in the United States on July 14, 2025
★★★★★ 5
Number 1
Format: Paperback
Best book to help prepare for FNP certification
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Reviewed in the United States on June 18, 2025
★★★★★ 5
A must have for FNP students
Format: Paperback
This book was a life saver! Chapters really explained everything easily and the test questions were very similar to what I saw on tests. Best of all, the questions gave rationales which helps solidify the information. This book is worth its weight in gold! Get it!
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Reviewed in the United States on July 12, 2024
★★★★★ 5
Worth the buy
Format: Paperback
Helpful. I prefer this little guy over the gigantic book we were required to purchase along with this one. Barely opened the bigger one, only used this for my advanced assessment course and still got an A.
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Reviewed in the United States on August 23, 2025
★★★★★ 5
A great condition when arrived. Strongly suggested.
Format: Paperback
I love this product and will be a great source for my physical exam study.
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Reviewed in the United States on January 11, 2025
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