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Description
AVG PTR25-700-LF 25mm 700kPa Commercial PTR Pressure Temperature Relief ValveOverview Australian Valve Group (AVG) PTR25 700 LF 25mm (1") 700kPa 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) PTR25-700-LF 25mm (1") 700kPa 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: PTR25-700-LF
- Watermark License Number: 2639
- Expansion Rating: 132kW
- Pressure Rating: 700 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-PTR25-700-LF
Package Contents
- AVG PTR25-700-LF PTR Valve 25mm (1") 700kPa
- Package Weight: 900g
Shipping Notes
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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]
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4.6 ★★★★★
Based on 23 reviews
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Product Reviews
★★★★★ 3
Went from five stars to three.
Color: White Marble Look, Color: White Marble Look
I was thrilled with this dispenser & sponge holder for the first month or two then soap started oozing out of the top. (See photo) I didn’t change types of soap but am trying different things now to see if it helps. It’s a great fit in my kitchen, holds the items I need, is sturdy, looks classy and clean but I’m not sure if I’ll get used to the blue ring of soap oozing out. I’ve been using this for 2.5 months at time of review.
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Reviewed in the United States on February 6, 2026
★★★★★ 5
Aesthetically pleasing
Color: Black
Very aesthetically pleasing, easy to clean, will last a lifetime because of the material quality and it feels like stone more than plastic.
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Reviewed in the United States on November 6, 2025
★★★★★ 5
Attractive and works great. Be sure to clean the suction cups and sink before using!
Style: Scroll
I have wanted a sponge holder to put inside my sink for a while now. I wanted something attactive and I wanted it to work as it should. Seemed reasonable until I started looking and reading reviews. The biggest complaint appeared to be that these sponge holders do not stay attached to the sink. The reviews for this particular holder were great. Customers stressed cleaning the suction cups and sink before using. I am really glad they did because holder arrived in the packaging with zero instructions. Because I read the reviews I knew what to do and it worked! I am very pleased with this sponge holder. It is attractive, it feels really sturdy and it stays on the side of stainless steel sink just fine.
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Reviewed in the United States on August 8, 2022
★★★★★ 5
Pretty; sturdy; perfect size
Style: Contempo, Style: Contempo
Nice, sturdy little sponge and brush holder for the side of the sink. I was afraid my sink would me too small and spent lots of time trying to find a holder for the rim/countertop area. This one is not too big but fits my dobie and brillo perfectly. My sink is a little too short for a full fledged brush so when I tried to put in the brush I use sometimes it sticks up too much. That's really not the products fault so I won't subtract the score because of it. Also, I decided to put the holder flush against the side closest to me, instead of the side or the back of the sink. If I had chosen that location, the brush sticking out might not be an issue.
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Reviewed in the United States on July 26, 2016
★★★★★ 4
Yes the suction works on stainless steel!!
Style: Contempo
I've been through many rag holders before including a magnetic one, which broke. But the suction on this sucker (pun intended) is top notch! It doesn't slide around or come off or slide to the bottom of the sink. It just stays put which is so unique for anything with suction cups. The only reason i am giving it 4 stars instead of 5 is that it is quite small. I wish it were a few inches longer so i could easily fit two rags or sponges in the holder. But i have to jam them in and its not pretty. So for the price, i think it should have been bigger. Still a good product because of the functionality of the suction cups.
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Reviewed in the United States on October 3, 2017