Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 15 - Jul 20
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
Description
AVG PTR25-850-LF 25mm 850kPa Commercial PTR Pressure Temperature Relief ValveOverview Australian Valve Group (AVG) PTR25 850 LF 25mm (1") 850kPa 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) PTR25-850-LF 25mm (1") 850kPa 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: PTR25-850-LF
- Watermark License Number: 2639
- Expansion Rating: 132kW
- Pressure Rating: 850 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-PTR25-850-LF
Package Contents
- AVG PTR25-850-LF kPa PTR Valve 25mm (1") 850kPa
- 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 1444 reviews
Sort
Product Reviews
★★★★★ 5
Nice shirt!
Color: Black, Size: Large
When I lost weight and hit my goal I wanted to purchase new clothing. I discovered Coofandy on Amazon and could not be happier. This line of clothing is great. I have purchased a handful of shirts and shorts and liked all of them. This shirt fits well, I tried a medium initially and it was a bit too small so I moved up to a Large. Prior to my weight loss I was always an X-large. Shirt looks nice and fits great. I have this shirt in 3 colors now.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 27, 2026
★★★★★ 5
Best fit, Stylish and casual shirt out there.
Color: White, Size: X-Large
wow, I purchases every color of these. they are my favorite shirts. the fit is comfortable around neck and arms, firm but not uncomfortable.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 19, 2026
★★★★★ 5
Great shirt, a bit large in arms
Color: A - Moon Gray, Size: Medium
I really like the cut and texture of the shirt. The only thing I would say is it is loose in the arms unless you’re a body builder. My arms are toned, muscular, but more lean than thick, so if you like a snug sleeve this is probably not for you. I’m 5’9” 180bs for reference and wear a medium.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 2, 2026
★★★★★ 5
Check the size chart and reviews!
Color: Black, Size: 3X-Large, Color: Black, Size: 3X-Large
Bought this for my husband and if i didnt check the reviews I would ordered it too small. He normally wears a XL in T-shirts but he has very large arms so the 3XL in this fits him comfortably. The material is a bit stretchy so he could have probably taken the 2XL but I am satisfied with how the 3XL looks on him. He looks so good!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 31, 2026
★★★★★ 1
Size discrepancy
Color: Wine Red, Size: Small
I like the look and feel of this shirt, but I originally bought a medium and it was too big, so I bought a small. Both shirts are the exact same size. It is labeled on the collar as a different size, but it's the same. If anything the small is slightly larger
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 5, 2026
recommand products
Animas USA Newspapers Vector Illustration | Editable SVG, AI, EPS, PDF & PNG | City Vectors
11.00
Amiret USA Newspapers Vector Illustration | Editable SVG, AI, EPS, PDF & PNG | City Vectors
11.00
Anthony USA Newspapers Vector Illustration | Editable SVG, AI, EPS, PDF & PNG | City Vectors
11.00
Americus USA Newspapers Vector Illustration | Editable SVG, AI, EPS, PDF & PNG | City Vectors
11.00
Amery USA Newspapers Vector Illustration | Editable SVG, AI, EPS, PDF & PNG | City Vectors
11.00