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Description
AVG PTR25-400-LF 25mm 400kPa Commercial PTR Pressure Temperature Relief ValveOverview Australian Valve Group (AVG) PTR25 400 LF 25mm (1") 400kPa 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) PTR25-400-LF 25mm (1") 400kPa 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: PTR25-400-LF
- Watermark License Number: 2639
- Expansion Rating: 132kW
- Pressure Rating: 400 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-PTR25-400-LF
Package Contents
- AVG PTR25-400-LF PTR Valve 25mm (1") 400kPa
- 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
4.1 ★★★★★
Based on 6 reviews
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Product Reviews
★★★★★ 5
Great product
Size: 0.18 Ounce (Pack of 25)
Just bought theTwist Sticks with Peanut Butter & Munchy Sticks 2 weeks ago for my very fussy 11 year old Cocker Spaniel but was totally surprised on how he immediately loved them and keeps looking at me wanting another one. Think this might be something to consider adding to my subscribe and save list.
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Reviewed in the United States on October 11, 2024
★★★★★ 5
My dog loves these!
Size: 0.18 Ounce (Pack of 25)
My dog loves these!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 4, 2026
★★★★★ 5
Dog loves it.
Size: 0.18 Ounce (Pack of 25)
Dog's choose of all the different kind (6) of chews she has. Highly recommend.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 26, 2026
★★★★★ 5
picky yorkie approved
Size: 0.18 Ounce (Pack of 25)
well, like many of the other members of the dingo fan club, it’s been hard to find consistency with dingo products the last few years likely due to some products being manufactured in more than one country. even though i’ve thrown hundred maybe thousands down the drain trying to appease my picky 13 year old diva, the truth is i still won’t give up bc she likes what she likes! and she likes dingo plain and simply. it’s her world and i’m just living in it LOL! I’ve never had an issue with any of these peanut butter twist stick packages of 25 like i have had with the white and red ones. i usually have to soak them in hot water for a few mins to soften up a bit but not these pb sticks. my yorkie is 13 and doesn’t have the best teeth and is missing a few in the front lol so if something is too hard, she just gives up. this product is great value
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Reviewed in the United States on January 10, 2024
★★★★★ 4
The dog seems to like them!
Size: 0.18 Ounce (Pack of 25)
It's a chew stick for my dog an she seems to like them🙄
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Reviewed in the United States on February 21, 2021