SKU: 66040622548

Reflex 25mm Extended Body RPTRE15I 15mm 1000kPa PTR Pressure Temperature Relief Valve

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Description

Reflex 25mm Extended Body RPTRE15I 15mm 1000kPa PTR Pressure Temperature Relief ValveOverview The Reflex RPTRE15I 1000 PTR valve features a 1" (25mm) Extended body and is supplied with insulation jackets to reduce heat loss and improve the hot water services' overall thermal efficiency. The PTR Pressure and Temperature Relief Valve, also known as TPR valve is used to regulate the water pressure inside hot water services, including heat pumps, electric, gas storage and solar water heaters across all mainstream brands in Australia such

Overview

The Reflex RPTRE15I-1000 PTR valve features a 1" (25mm) Extended body and is supplied with insulation jackets to reduce heat loss and improve the hot water services' overall thermal efficiency. The PTR Pressure and Temperature Relief Valve, also known as TPR valve is used to regulate the water pressure inside hot water services, including heat pumps, electric, gas storage and solar water heaters across all mainstream brands in Australia such as Rheem, Vulcan, Rinnal, Dux, Aquamax, Thermann, Apricus and Solahart. 

The Reflex PTR valve features the same threads, fitments and similar physical sizes with many other PTR valve manufacturer brands such as Reliance' HT55, AVG, Tomson and Nefa. This makes the Reflex PTR valve a perfect direct replacement to an existing valve in an old hot water heater. 

The PTR pressure temperature relief valve regulates the pressure caused by water volume expansions during normal heating cycles in a hot water service. The PTR valve relieves this increase in pressure by a controlled water dripping into a drain line typically of 2 to 5 litres per day depending on the hot water usage. 

The PTR pressure temperature relief valve also acts as a mechanical protection device for the hot water services. In rare occasions of a faulty thermostat or heating element, the hot water service can overheat, building a dangerously high pressure and temperature inside. When this pressure or temperature exceeds the PTR valve's rating, it will dump hundreds of litres of water all at once as an emergency pressure relief. Usually a large puddle of water will be observed around the hot water services on the ground during this emergency water dumping. The PTR valve usually has a KW rating, which describes this emergency water dumping ability in terms the heat dissipating power. A larger PTR valve will usually have a larger KW rating and this KW rating is specified by local plumbing rules, especially in large commercial hot water systems.

A functioning PTR valve is a requirement by law in Australia for safety as per explained above. A typical sign for a faulty PTR valve is when there is a large amount of water leakage in a stream, rather than a controlled dripping. The worn out or leaking PTR valve must be replaced immediately. 

Technical Details

  • Brand: Reflex
  • Model: RPTRE15I-1000
  • Watermark License Number: WMKA21795
  • Expansion Rating: 10 kW 
  • Pressure Rating: 1000 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 Jackets
  • Material: DR Brass
  • Intended Use: Electric tanks, solar tanks, gas storage tanks and heat pumps
  • SKU: RPTRE15I-1000

Package Contents

  • Reflex RPTRE15I-1000 15mm 1000kPa PTR Valve
  • Package Weight: 380g
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: 66040622548

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Tubia
Los Angeles, US
★★★★★ 5
Peace of mind knowing your covered
Asurion protection plans are worth the peace of mind!
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Reviewed in the United States on April 1, 2026
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Beverly R.
Lake Worth, US
★★★★★ 5
Great customer service.
Glad I bought the protection. The vaccume worked great for a while then quit holding a charge. They refunded my purchase price (Amazon gift card).
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Reviewed in the United States on December 12, 2025
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Ellen Skerke
Cuba, US
★★★★★ 5
The pads worked well.
Size: for Saros 10R
I feel comfortable that it will work.
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Reviewed in the United States on January 22, 2026
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Nicholas R. Pierce
Waukegan, US
★★★★★ 5
Really good to have
Size: for Q S5V
After owning a wireless vacuum mop I knew it was good to have extra parts like this on hand so I ordered these when I ordered the robot vacuum. Oh boy... when my vacuum did the dreaded run through dog poop I was very happy to be able to just throw the other parts away and replace them on the spot.
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Reviewed in the United States on May 5, 2026
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Elizabeth
Pawtucket, US
★★★★★ 5
Exactly what we needed
Size: for Q7 M5+
This is exactly what we needed for our vacuum.
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Reviewed in the United States on May 30, 2026

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