Pay in installments of $31.88 with
,
and
Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 16 - Jul 21
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
4.1 ★★★★★
Based on 23 reviews
Sort
Product Reviews
★★★★★ 5
Great clean look for a nice casual dress watch
Color: Silver-Tone Bracelet, White Dial, Color: Silver-Tone Bracelet, White Dial
Classy and clean looking design, great quality and excellent price
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 17, 2026
★★★★★ 5
Great quality, highly recommend
Color: Silver-Tone Bracelet, White Dial
I took a chance and bought the Citizen not sure if I would like the look. Received it today and it's handsome. The size is good, it looks substantial. I also like the fact that it runs on the power of light. Would recommend Citizen with no regrets. Thank you Citizen and the seller for a good job.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 27, 2026
★★★★★ 5
First Citizen
Color: Silver-Tone Bracelet, White Dial
Very happy with my purchase, great price and quality feels like a watch that will last
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 9, 2026
★★★★★ 5
Whoever did this to me will do this to you
Color: Silver-Tone Bracelet, White Dial
Do not let marks build up on your watch bc your in housing or transitional housing and you couldn’t bang up your wrist this much that much or at all it’s just not real how cool this watch is. It heat it’s firm it’s classy and classic just like it says I like to t but I wanna kill who damages my watch’s ppl should not damage my expenses
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 1, 2026
★★★★★ 5
Accurate watch
Color: Silver-Tone Bracelet, White Dial
Excellent watch. Mine gains 6 seconds a month
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 19, 2026
recommand products
Calpe Cemento Matt Stone Effect 600mm x 300mm (7 per box)
27.00
Tenmat Cavity Fire Barrier FF102/50 6mm x 75mm x 1m
27.34
Svenska Matt Jolejon Anti-Slip R10 200mm x 200mm (25 per Box)
45.12
Kraus Rigid Core Luxury Vinyl Tile - Furness Grey / Brown 610mm x 305mm ( 12 Lengths - 2.23m2 Pack)
59.99
Floor Tiling Trowel Set (965 FTS Set)
53.33