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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
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.4 ★★★★★
Based on 15 reviews
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Product Reviews
★★★★★ 5
Durable and fun for dogs
This is so easy to fill and my dog loves it! He got it when he was under a year and in his chewing stage and it is still intact. Very durable
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on September 2, 2025
★★★★★ 5
FANTASTIC!!
Our dog Tigger has LOTS of energy. 😅 Even with my husband taking him to run alongside his bike around the block three times the other day, Tigger wasn’t even panting by the end. 🤣 I was talking to a new friend who mentioned more mental stimulation could help. Last Tuesday evening, he learned “give paw” within about 15 minutes. Hmm he’s a SMART pup. 🤔 Bonus…teaching him that seemed to really tire him out.
From that point, I looked up dog mental stimulation toys here on Amazon and bought three puzzle feeders—this one is one of them. They’ve been amazing!! Tigger has been slowly catching onto how to get the food, which stops him from eating so dang fast AND also exercises his canine brain.
⭐️⭐️⭐️⭐️⭐️ I HIGHLY recommend something like this if you have dogs that have boundless energy or just seem like no amount of exercising helps calm them down.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 20, 2023
★★★★★ 4
Works well!
Fun for dogs! Only silly thing is it moves around on the floor a little bit, but overall works good! My lab loves it
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on July 10, 2025
★★★★★ 5
Great for busy pups and smart dogs!
This keeps my puppy blue heeler busy and happy. Easy to fill and wash. I put her puppy food in it and put it in her crate to play with. The kibble fits perfectly in each little hiding place. After a month of fun it has not broken or malfunctioned.
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Reviewed in the United States on May 31, 2025
★★★★★ 5
Great treat
Gave this to my friend’s dog, and they took a video when they put it down! The dog immediately found one of the treats and kept looking for the other treat and eventually found it this dog loved it!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 17, 2026
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