SKU: 12042258404

AW Logi WSP25LF 25mm 1" Solar Rated Non Return One Way Check Valve

Sale price$30.60 Regular price$34.00
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Ships within 48 hours · Estimated delivery Sep 21 - Sep 26

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Description

AW Logi WSP25LF 25mm 1" Solar Rated Non Return One Way Check ValveOverview AW WSP25LF Solar Rated Non Return One Way Check Valve is spring loaded and designed to prevent the high temperature backflow from the roof collectors present in solar hot water systems. In order to survive this high temperature working environment, the AW check valves are constructed with lead free DR brass body, silicone seals and high temperature rated full brass internals. During the operation of solar hot water systems in summer, a

Overview

AW WSP25LF Solar Rated Non Return One Way Check Valve is spring loaded and designed to prevent the high-temperature backflow from the roof collectors present in solar hot water systems. In order to survive this high temperature working environment, the AW check valves are constructed with lead free DR brass body, silicone seals and high temperature rated full brass internals.

During the operation of solar hot water systems in summer, a stagnation condition can be created as the storage water tank reaches its maximum top out temperature usually around 60-70 degrees. In such stagnant conditions, the solar pump will stop water circulation and the solar roof collectors can reach 180°C in flat plate panels and 200+°C in evacuated tubes. This super heated water remains in liquid form due to the pressure in the solar hot water system and pushes down back to the water tank creating the backflow. This back flow can cause damages to the water pumps, flow meter and other components if not prevented. A standard check valve that is not solar rated will melt over time with the usual plastic internal components. A swing type check valve would create excessive flow resistance and poor seal. The AW WSP25LF spring loaded solar rated check valve is perfect in such installations, offering minimal pressure drop during water pump operation and long lasting seal even in continuous high temperature environment.

The AW solar check valves can be installed in either vertical or horizontal orientations and is WaterMark Approved for compliance in Australia. The solar rated check valves can be also used in low temperature rating steam applications. 

Technical Details

  • Manufacturer: Austworld (AW)
  • Model: WSP25LF
  • Connection Size: BSP 25mm (1") Female thread (25FI x 25FI)
  • Physical Thread Measurement: 33.249mm female internal thread; Refer to the BSP sizing chart in the photo gallery
  • Body Material: Lead Free DR Brass
  • Seal Material: Silicone
  • Valve Type: Non Return Check Valve
  • Maximum Temperature & Pressure: 150°C and 2000kPa
  • Intended Use: Solar Hot Water Systems
  • SKU: WSP25LF

Package Contents

  • WSP25LF Solar Rated Non Return Check Valve
  • Package Weight: 320g
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: 12042258404

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CCombs
Birmingham, US
★★★★★ 5
Perfect
Size: 4.5", Style: Open
These hooks are so functional and great for organization in the garage. Perfect for hanging extension cords and other misc items that you want to have easy access to. Super simple installation; lift the release and move then flip back down to lock again. Very sturdy and magnet is strong. Worth the buy!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 18, 2024
J
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joshua
Cuba, US
★★★★★ 5
Great for shed organizing
Size: 4.5", Style: Open, Size: 4.5", Style: Open
We recently upgraded to a conex/shipping container/metal shed and needed a way to organize all of our yard tools. These work great, the weight holds a lot of items, could be a little longer but we were impressed with them holding everything for over a month now and not moving.
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Reviewed in the United States on February 20, 2026
R
Verified Purchase
Rebecca
West Palm Beach, US
★★★★★ 5
Great! Worth the money
Size: 4.5", Style: Open
These things are amazing!!!! So strong you can hang a 20ft ladder and they don’t budge at all. Soooo easy to use especially in a metal building/shed
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Reviewed in the United States on December 10, 2025
G
Verified Purchase
Guitar
Fort Morgan, US
★★★★★ 4
Good product. Know the limits.
Size: 6 Inch, Style: Open
These are very nice. Sure beats drilling holes in your steel. However, 45lb is a stretch. Will easily hold 25lbs. However 35+ is a stretch, especially if your walls shift a little due to be close to a door. Will definitely order more, just important to understand the limits. Thanks.
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Reviewed in the United States on February 21, 2026
V
Verified Purchase
Valhalla Ranch
Whiting, US
★★★★★ 5
Finally, a product that meets all of its advertised claims!
It seems to me like this product is always out of stock. Of the ones I have received and been able to use. They work as advertised and hold an incredible amount of weight. It is very easy to put them on and off, but once they are latched down, you could not remove them by hand without bending the hooks I would like to have a few more boxes to use in my steel building.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 13, 2026

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