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Description
APO PRV20F Inline ¾" 20mm Pressure Reducing Valve, 150-600kPa AdjustableOverview The APO PRV20F 20mm 3 4" 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 PRV20F 20mm 3/4" 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: PRV20F
- Specifications:
- Flow Rate: 125L/min@600kPa; 40L/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: 3/4" BSP (20mm) Female Thread (20FI x 20FI)
- Physical Thread Measurement: 26.441mm, 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-PRV20F and APO-PRV20-PRG
Package Contents
- APO PRV20F 20mm 3/4" inline pressure reducing valve
- Package Weight 480g (580g with the optional gauge)
Postage
All listed items are in stock. Dispatch next business day. Local pick up is available.
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
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4.1 ★★★★★
Based on 1310 reviews
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Product Reviews
★★★★★ 4
My honest review of the book . Spy The Lie
Format: Paperback
Spy the Lie" by Philip Houston is a practical and fascinating guide that teaches you how to spot deception using the same proven techniques developed by the CIA. Instead of looking for unreliable body language "clues," it focuses on identifying specific verbal and non-verbal behaviors that people show when they are feeling the stress of a lie. It’s written in very clear, everyday language with plenty of real-world examples, making it a great tool for anyone who wants to communicate more effectively and know who they can really trust.
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Reviewed in the United States on February 4, 2026
★★★★★ 5
A must have for, among others, clinical physicians and -especially- mental health experts
Format: Paperback
Very good book. The authors state in a clear and unambiguous way several "tips" that may help us detect deceptive behaviors. They repeat the points, making them easier to "stick". What's interesting is how simple they appear in their application; we are not talking about mathematical topology...The glossary completes admirably the book. Would I read it again? Definitively (a quality "seal" for me). As a physician (psychiatrist) I would definitively suggest it to all physicians that perform clinical work, but, above all, to psychiatrists...
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 19, 2026
★★★★★ 5
Deception Detection Primer
This book is well written and is perfect for the newbie like me to grasp the concepts: easy to follow, logically structured, points explained well and with examples, points tied together so you understand how they fit. A few reviewers think the points in the book are obvious. Many of them are, but I think the easy-to-follow writing makes the points seem even more obvious. Superficially, and taken separately, many of these ideas do seem obvious. The hard part is coming to an accurate conclusion about deception.
One reason is because many deception indicators can be false positives. For example, a commonly-believed indicator of deception is crossing your arms. How do you tell if a specific instance of this behavior is a deception indicator or not? The book gives a framework for when deception indicators are, at that moment, an indicator of deception. Another reason is that verbal indicators of deception can be missed or misunderstood. The book goes into excellent detail about how to recognize verbal indicators and to tell when a verbal indicator is, in fact, likely to be deception.
One of the better parts of the book, in my opinion, discussed the initial interrogation of OJ Simpson before his murder trial. They run through the questions that the detectives asked and explained how and why these questions did not work in eliciting possible deception. They then ran through the questions they would ask, following the model in the book, and explained how these questions would have been more effective.
The book stresses the limits of these ideas. You will not read this book and become a human lie detector. Being really good at spotting the lies AND directing an interview to extract those lies takes, I'm sure, lots of practice. However, you CAN gain insights and be better at deception detection just from reading this book. For example, when you watch a suspect interviewed on a news show like Dateline NBC, you'll spot the verbal cues that indicate possible deception, and you'll never watch these shows in quite the same way.
Prior to reading this book, I read "I Know You Are Lying" by McClish. Both books cover a lot of the same material, but from slightly different perspectives. I highly recommend both books if you're interested in this topic. I recommend reading "Spy the Lie" first, as it seems to give a more complete framework for implementing these ideas, then read the McClish book for additional insights.
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Reviewed in the United States on April 16, 2013
★★★★★ 5
Great for recruiters & business owners
Format: Kindle
This is long but it I am so grateful and want to give my recent triumph with the help of this book....I currently own a medical spa. Our biggest challenge is hiring hard working, honest people, passionate about the business. Statistically we are average with the number of good hires but that is not a good thing when statistics say only 51% last more than 12 mos. Especially for lower level jobs being less. Many people just want a paycheck or want free services and could care less about helping customers and learning about aesthetics or medicine. Within the first few chapters I had already found ways of asking questions in interviews that when applied were astounding in getting the right response.
A good example was when I was interviewing a woman whom I felt had amazing qualifications for my Front Desk Manager’s position. She had owned her own pet salon for over 17 years but sold it and went to work for Pet Smart. I thought that seemed a little strange so asked her why? She naturally had a response that she wanted to move to Texas, originally being from Wisconsin which was horribly cold and owning a business was just too stressful. I wanted to know more as this didn’t seem like the mentality of a successful business owner so I asked her what kind of paycheck she wrote herself each year. Her response was “my gross income last year was $80k, which I am so proud of.” 1) She did not answer the question. 2) “which I am proud of.” Is used to further convince me she was making good money.” Luckily as a business owner I know it probably takes at least $80.K just to run a business. But this was not enough for me to disqualify her and author Russell Targ says just 1 red flag is not enough, so after a few more positive type questions I asked another. ‘Tell me about a time you didn’t get along with a co-worker’. I’m paraphrasing because she gave an overly long explanation of events which in-and of itself is a red flag but within the overly verbose statement She stated “they get annoyed with me” but didn’t tell me what “they” get annoyed with. When I asked what ‘they get annoyed with’ she minimized a situation where she had the flu 4 days and the next day she went to an already committed dentist appointment to get her tooth pulled and was in too much pain so again had to call in sick. I was a bit suspicious at this point as to why her boss would be annoyed with this if she was such a great employee since both those explanations seemed reasonable. So I later in the interview snuck in an “assumptive question” about her being late to which she confessed several additional times having been late but of course had plausible excuses. I was even more suspicious at this point about her integrity as an employee so asked the question a different way, ‘tell me a time you had a challenging client’ to which she told me another very verbose story about “a client who brought in a badly matted dog and when after shaving it had lots of bruising etc. the lady gave a terrible rating.” I tried not to sound judgmental so I commiserated with her on that as a business owner how awful that must have felt. We exchanged some giggles and at this point I felt she really was ready to open up to me. I then asked her to ‘describe a bad day at work’ where she gave another story with many excuses why where she had ripped a dog’s ear by accident, the police and media was called accusing her of animal abuse, she was taken to court and her name was smeared in this small town which was hard to recover from.😳 Now I am a bit alarmed but the old me is wanting to believe her that it wasn’t her fault so Finally, I wrapped up after many other positive exchanges I asked ‘if I were to call her employer what derogatory things might they say about her’ to which she replied “they don’t like the way I do things which of course with further questioning her reply was to minimize all of their complaints.” Now, here is where I used to get tripped up. I usually have a phone interview that lasts about an hour or more before setting up face-to-face interview and that is how this one was. I as usual wanting to believe the best in everybody was mostly paying attention to the many positive and outstanding things she had to say and want to believe her excuses so immediately set up a face-to-face interview. But this time I did something differently after hanging up with her. I paid really close attention to the “cluster” of suspicious things she mentioned and by then it hit me like a ton of bricks. In every bad hire I have ever made they had answers like this woman where they minimized, evaded the questions, or had great excuses. Now while we all have great excuses from time to time the book says to pay attention to multiples. Needless to say I politely cancelled the interview. After reading this book the signs were as clear as day.
I am happy to say I am now able to cut my phone interviews down to just 20-30 minutes even shorter when I see these “cluster” as the hook puts it.
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Reviewed in the United States on February 9, 2019
★★★★★ 3
I spy with my little eye...
I give this book a three star for laying out the information on the how to of lie detection.
Now, is this a fool proof system? No as you won't find one. But it sure does give the tools needed to start detecting lies that surrounds us daily.
In the few days that I have read it, I started recognizing some of these patterns within myself and others and at times I call it out, and at times I chuckle realizing what is happening.
I enjoyed the tales in the books and how the authors have used the methods themselves in various scenarios.
What I was hoping more of is more stories and practical implication of it in every day lives. But over all, good book.
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Reviewed in the United States on September 16, 2012
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