SKU: 88519985

AVG PTR15-850-LF 15mm 850kPa PTR Pressure Temperature Relief Valve

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Description

AVG PTR15-850-LF 15mm 850kPa PTR Pressure Temperature Relief ValveOverview Australian Valve Group (AVG) PTR15 850 LF 15mm (1 2") 850kPa PTR Pressure and Temperature Relief Valve (also known as TPR valve) is cross compatible with other popular makes such as Reliance HT55 PTR valve with same fitments and functions. During the hot water services' heating cycles, the volume of water will expand as the temperature increases. This volume expansion creates excessive pressure inside the water cylinder and must be regulated.

Overview

Australian Valve Group (AVG) PTR15-850-LF 15mm (1/2") 850kPa PTR Pressure and Temperature Relief Valve (also known as TPR valve) is cross compatible with other popular makes such as Reliance HT55 PTR valve with same fitments and functions.

During the hot water services' heating cycles, the volume of water will expand as the temperature increases. This volume expansion creates excessive pressure inside the water cylinder and must be regulated. The AVG PTR valve is designed to regulate and relieve the pressure in hot water services by dripping in a controlled manner. 2-5L a day of dripping is normal, depending on the hot water usage and the amount of heating going into the water.

The AVG PTR valve is also a mechanical protection device for the hot water services. In rare occasions of faulty thermostat or heating element, the hot water service can overheat and build dangerously high pressures. When the AVG PTR valve senses this abnormally high temperature and pressure, it will dump large amounts of water in hundreds of liters for an emergency pressure relief.

A functioning PTR valve is a requirement by law in Australia for safety and the AVG PTR  valve is approved under the Watermark standard. The AVG PTR valve comes with an insulation jacket and allows for a professional look and minimal heat loss.

A PTR valve usually has a life span about 5 years and needs replacing if you notice excessive water leakage in a stream instead of a controlled dripping. The AVG PTR valve is cross compatible with many other brands such as Reliance, Tomson, Nefa and Reflex.

The AVG PTR valve fits perfectly with mainstream heat pump, solar, electric and gas storage water heater brands such as Rheem, Vulcan, Rinnal, Dux, Aquamax, Thermann, Apricus and Solahart. 

Technical Details

  • Brand: Australian Valve Group (AVG)
  • Model: PTR15-850-LF
  • Watermark License Number: 2639
  • Expansion Rating: 10 kW 
  • Pressure Rating: 850 kPa
  • Temperature Rating: 99°C
  • Thread Size: 1/2" BSP (15mm) Male MI thread and female FI thread
  • Thread Size Physical Measurements: 20.995mm external male and internal female thread diameter (refer to the BSP sizing chart in the photo gallery)
  • Insulation Jacket Included 
  • Material: DR Brass
  • Intended Use: Electric tanks, solar tanks, gas storage tanks and heat pumps
  • SKU: AVG-PTR15-850-LF

Package Contents

  • AVG PTR15-850-LF 15mm (1/2") 850kPa PTR Valve with insulation jacket
  • Package Weight: 350g

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. 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
SKU: 88519985

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South Berkshires, Massachussets
Charlottesville, US
★★★★★ 3
Needs modification to work correctly.
Size: 7.125 x 2.875, Color: Brushed Metal, Size: 7.125 x 2.875, Color: Brushed Metal
It is okay, but the brushes fall through the holes' making them hard to retrieve. The only way to get them out of the holder is to pull up on the bristles or push the handle from the bottom. Both don't work well. My solution is simple, just install a "stop" below the holes. My solution is ugly but works. It took me about 15 minutes to modify.
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Reviewed in the United States on April 4, 2026
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Verified Purchase
Awesome quality, they stay on your feet while you’re running hard, I mean on your ankles great socks 🧦
Birmingham, US
★★★★★ 5
Quality and design 👍
Size: 7.125 x 2.875, Color: Brushed Metal
Fit great in our kitchen sink, good quality , very good design.
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Reviewed in the United States on May 9, 2026
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Donna Roberson
Lake Worth, US
★★★★★ 5
Size was perfect
Size: 7.125 x 2.875, Color: Black
It's a perfect size for my sink. Well made. I can fit my handle dish scrubber, a sink stopper, a sponge and a scrubber in to comfortably.
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Reviewed in the United States on April 22, 2026
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Margaret
Belleville, US
★★★★★ 5
Great product! Perfect size.
Size: 7.125 x 2.875, Color: Brushed Metal
Perfect size! Fits two sponges and great suction with three contact suction cups.
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Reviewed in the United States on March 24, 2026
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Michelle bullard
Pawtucket, US
★★★★★ 5
Stable and easy to assemble
I used these to support a heavy piece of countertop would to create a side table. Looks great and holds steady.
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Reviewed in the United States on February 15, 2023

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