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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
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4.9 ★★★★★
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★★★★★ 5
Great read. Tons of info.
Format: Hardcover
We really like this book. A great background and detailed info on this topic. Really like the real-world examples and application. Pretty exhaustive, as far as that is possible given the topic. Also, quite easy to read, although I confess that if from an engineer's perspective.
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Reviewed in the United States on July 1, 2021
★★★★★ 5
This is excellent foundational CyberSec text - Well Done
Format: Hardcover
This is well written and wide ranging text. Foundational materials
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Reviewed in the United States on December 5, 2022
★★★★★ 4
New but Gashed
Format: Hardcover
Despite the deep gash on the spine of the book that was listed as "new", it is in brand new condition. Shipping was fast.
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Reviewed in the United States on August 19, 2022
★★★★★ 5
Must have
Format: Hardcover
I am buying every edition to support this great book.
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Reviewed in the United States on March 10, 2021
★★★★★ 5
Under appreciated
Format: Hardcover
I have the first edition, and the 3rd (2020), and the 3rd. This book is a decent introduction to InfoSec, although it takes a few years and some experience to be able to truly appreciate it. I've probably ready it all, in prices, across 15 years and all revisions. It's a reference, it's a guide, that book is my best friend.
I think this book is a good guide for entry level folks who are looking for a comprehensive introduction to the field of computer security, and also to senior staff. Be it managers, directors, eng managers, internal audit and privacy professionals looking for a comprehensive introduction to Security relevant regardless of the particular technology they work with or industry they are in.
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Reviewed in the United States on January 3, 2021
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