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Description
APO PRV25F Inline 1" 25mm Pressure Reducing Valve, 150-600kPa AdjustableOverview The APO PRV25F 25mm 1" inline pressure reducing valve is Australia Watermark approved and features a pressure adjustment range of 150 600kPa with a factory setting at 500kPa. The APO PRV pressure reducing valve features the same threads, fitments and similar physical sizes with many other valve manufacturers such as Reliance, AVG, Tomson, AW, Nefa and Reflex. This makes the APO PRV pressure reducing valve a perfect direct replacement to an
Overview
The APO PRV25F 25mm 1" inline pressure reducing valve is Australia Watermark approved and features a pressure adjustment range of 150-600kPa with a factory setting at 500kPa. The APO PRV pressure reducing valve features the same threads, fitments and similar physical sizes with many other valve manufacturers such as Reliance, AVG, Tomson, AW, Nefa and Reflex. This makes the APO PRV pressure reducing valve a perfect direct replacement to an existing valve with no plumbing pipe modifications required.
The pressure reducing valves are commonly used in hot water services such as electric, heat pump, gas storage and solar hot water heaters across all mainstream brands in Australia such as Rheem, Vulcan, Rinnal, Dux, Aquamax, Thermann, Apricus and Solahart. The pressure reducing valve employs a membrane design inside with a stiff pre-loaded adjustable spring, opposed to a sliding piston mechanism found in a pressure limiting valve which often causes failures from clogging up. This design feature makes a pressure reducing valve more reliable than a pressure limiting valve, while functioning the same way in this application.
In real world installations, it is sometimes found that pressure limiting valves cannot limit pressures sufficiently in places where unusually high street mains pressures are present. This can cause troubles with ECV and PTR valves leaking on hot water services. The pressure reducing valves can be used in such situations and offer a far better pressure control from our in field experiences over the years in our own plumbing jobs in Brisbane.
The pressure reducing valves can also be installed after water meters or just before entering houses. The pressure reducing valves can ensure a stable water supply pressure, despite the pressure fluctuations in the mains from the streets.
The pressure reducing valve comes with a BSP 6mm test plug inbuilt, where an optional pressure gauge can be inserted for pressure measurement at the outlet. The optional pressure gauge is shown in the photo gallery and can be bought for extra. It must be noted that the pressure gauge is only intended to be used as a measurement tool and must be removed after use, as it could rust inside out if left in a wet environment for prolonged periods of time.
Technical Details
- Manufacturer: APO
- Australia Watermark Approved, License No. 26608
- Model: PRV25F
- Specifications:
- Flow Rate: 145L/min@600kPa; 50L/min@150kPa
- Maximum Working Temperature: 80°C
- Maximum Upstream (Inlet) Pressure: 1600kPa
- Downstream (Outlet) Setting Pressure Range: 150 kPa - 600 kPa
- Factory Pressure Setting: 500kPa
- Optional pressure gauge can be inserted for downstream pressure measurement via the BSP 6mm test plug
- Extractable and serviceable cartridge with stainless steel filter mesh
- Thread Size: 1" BSP (25mm) Female Thread (25FI x 25FI)
- Physical Thread Measurement: 33.249mm, refer to the BSP vs Physical Thread Measurement Table in the photo gallery
- Material: DR Brass Body, Lead Free
- Intended Use: Hot water heaters and street mains water inlet into residential dwellings.
- SKU: APO-PRV25F and APO-PRV25-PRG
Package Contents
- APO PRV25F 25mm 1" inline pressure reducing valve
- Package Weight 560g (680g with the optional gauge)
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
4.8 ★★★★★
Based on 445 reviews
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Product Reviews
★★★★★ 5
For motorcycles
Size: 32 oz, Style: 32 Fl Oz, Pattern Name: Lube
Great stuff, good price
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 25, 2026
★★★★★ 5
The best lower unit gear oil I have used
Size: 32 oz, Style: 32 Fl Oz, Pattern Name: Lube
I have been boating my whole life, this is by far the best gear oil. I use this in my Johnson 115 even though this is technically made by Mercury. I seem to get less if any water intrusion into my gearcase with this oil. If there is any, the oil emulsifies the water and continues to protect the gears. I have had better luck with this than Pennzoil marine or others. Highly recommend. It is a blue color and easy to drain and fill.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 23, 2026
★★★★★ 5
Great
Size: 32 oz, Style: 32 Fl Oz, Pattern Name: Lube
Great lube for the boat
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 19, 2026
★★★★★ 5
recommend
Size: 32 oz, Style: 32 Fl Oz, Pattern Name: Lube
great price
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 22, 2026
★★★★★ 4
Does not come with a pump.
Size: 32 oz, Style: 32 Fl Oz, Pattern Name: Lube
The Good: Changing the fluid in the lower unit is a very easy DIY job. This can save you hundreds of dollars each year by doing it yourself.
The Bad: You need a special pump to change the oil, and sometimes it comes with the gear lube. Unfortunately this product did not come with it. Luckily my neighbor had an extra one from changing the lube a different boat laying around and was able to use that.
The Ugly: If you have to go get the pump, that could cost a few extra dollar but is just an extra nuisance. The pumps are interchangable but you just need to clean it between uses (DON'T MIX DIFFERENT OIL BRANDS)
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 28, 2025
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