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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
- Free Standard Shipping on $100+ Orders to the USA.
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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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4.2 ★★★★★
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Product Reviews
★★★★★ 5
Perfect for travel... very comfortable!
These things are amazing! I bought these a couple weeks before a trip to Italy and had planned on doing a lot of walking in them. I only got to wear them a couple times before we went on our trip, but no blisters, even during LOTS of walking in them on the trip! They wore in super quickly while still keeping their durability. My feet stay dry even in lots of rain. The photos show the wear on them after a few months, including a couple weeks of travel, and weeks of wear around town.
My only complaint is that there is a tiny something (a little knot of thread with glue? not sure...) that is at the top of the opening of the boot, and it rubs the back of my ankle and makes a sore. That isn't enough to make me not wear them though. There's a photo that shows this. As you can see it's super tiny, and probably not even a flaw, it just hits my ankle *just* right so that it rubs.
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Reviewed in the United States on August 10, 2018
★★★★★ 5
These shoes were perfect! Cute design
Spent more than I typically would on shoes to get a quality pair for a trip. Needed a dependable shoe that would be waterproof for hiking and exploring the often wet climate and terrain. These shoes were perfect! Cute design. Very comfortable. Fit as expected. Kept my feet warm and dry. Good for hiking as well as walking the streets of the little towns we explored. I'm glad I invested in these boots!
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Reviewed in the United States on July 29, 2018
★★★★★ 4
Chic Comfort
I really enjoy these boots. Excellent for wet muddy city streets! The slip on version are a bit narrow when it comes to putting them on. I wear a size 8 and ordered 8.5 for extra room , but they were too long. I think if you have wide feet these may not be too comfortable. Overall a good leather shoe. No water sipped through while wearing.
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Reviewed in the United States on March 18, 2021
★★★★★ 5
Need breaking in, but awesome quality
I was a little worried when I first got these- my feet are a little wider than normal, but not wide enough to need wide width. They were quite snug the first few times I wore them, but after some breaking in they fit PERFECT. I did have to go up a half size from my normal 7 to a 7.5, but these boots are fantastic and I can tell I have them for a long time!
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Reviewed in the United States on March 18, 2021
★★★★★ 5
Get these! You won't regret it!
These are my go-to winter shoes! They are waterproof- I love them bc they don't look like your typical "rainboots"! Stylish- I get compliments everytime I wear them! Comfortable- first time I wore them they were tight through the middle of my foot, but after two wears I had them nice and broke in, now my most comfortable shoes!
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Reviewed in the United States on February 17, 2021