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Backflow Plumbing

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Backflow Plumbing & RPZ Valve Test Experts

Your Local Brisbane & Gold Coast Plumbers

Jetset Plumbing specialise in the Testing, Certification, Installation & Maintenance of Backflow prevention devices.

We operate throughout the Brisbane and Gold Coast areas. Your backflow plumber will submit the completed test report to the relevant water authority or council on your behalf.

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Backflow plumbing valve

$0 Call Out Fee - Backflow Plumbing
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$0 Call Out Fees
10% Senior Discount
100% Quality Workmanship Guaranteed

Jetset Plumbing Partners with World Vision


Our Happy Customers

With more 5 Star reviews than any other plumbing company. More locals choose to use us.


Jetset Plumbing Reviews

How was your plumbing experience? 4.7 / 5 based on 1394 reviews
4.7 / 5 based on 1,394 Google Reviews!
Great service. Repairs to 2 x toilets the day following my booking. The website was very easy to navigate - definately user friendly. Mick performed the repairs in a very timely manner and left the areas clean. Mick was very polite and friendly and I wouldn't hesitate in recommending this company. First class !
Jem was fantastic. On the first visit he identified the problem, explained exactly what needed to be done, and offered to come back later the same day to address it. This wasn't possible for me so it was postponed to the following week, and everything was sorted in half an hour. He was very courteous and respectful of the surroundings as well during work. Highly recommended.
I would recommend Jetset Plumbing, after using them for a few years now. I have found all their staff to be very professional and friendly. They are always quick to respond no matter how big or small the job.. This time Ben was very helpful in not only replacing a tap and drain but fixed a few minor things as well. Ben also made sure the area was clean before he left. Very happy.
Stan arrived on time. He was honest, and explained the problem as well as gave me opinions to choose from to have the problem fixed. He cleaned up afterwards, and I would recommend Jetset Plumbing to my family and friends
Thank you for the great service you provided, you communicated well with us and explained things thoroughly. Definitely will be using you again if we need to.
Tony did a terrific job bringing my 50yr old bathroom/laundry into the 21st century! He was patient and explained what he had to do and was a pleasure to interact with. Thank you so very much and working on doing the next bits to bring you back to do the finishing bits!! Jo
Nick came out & sorted out our plumbing problem. He did a fabulous job, and we couldn't have been happier with him and the service provided. He came when he said he would and gave us advice on how to proceed. Very professional and friendly, and we were so happy with his work and the end result. The price was great too and Nick went above & beyond to help us. Highly recommend giving these guys a go. We will most certainly be using Nick and Jet Set Plumbing going forward as our plumber of choice! :-)
Service was excellent. Mike was on time, courteous, helpful and patient in sorting out the drainage issues. Thank you.
Fantastic job by Blake, very happy with service
Had JEM here to unblock the drains. Explained in details of why it was blocked and what was the potential risk and how to solve this PROBLEM. Fortunately camera shows it was blocked in the conjunction pipes which was supposed to be under council maintainance. Jem also told me how to contact council and let them take action as soon as possible. Soon it was completed by council at the same day, and I could also refund the cost of plumbing. Such a nice job, Jem. Highly recommend this person. Professional and knowledgeable, also negotiable.
This is the second time we have used Jetset Plumbing for work needed at our house. Matt came the day before and gave us a quote, we had every flexible hose in the house changed and 2 new mixer taps installed. I cannot give this company and staff enough credit for how professional they are. Matt was like a Ninja, quiet, professional, polite and excellent at his craft and took pride in his work. I needed a tap mixer we did not foresee and Matt went to the supplier, sent me back pictures of the mixers with prices and let me pick which one I wanted, and that to me is old fashion service something I thought no longer existed. Matt was very tidy and clean and did a great job, so to everybody out there this company is the BOMB. Cheryl
I found Blake pleasant, friendly and helpful with neat and tidy work. I would recommend Jetset Plumbing again.
Matty was great. He was prompt and professional. Found our leak the first go and quickly. Very friendly and informative. Would have him back on site anytime.
Glenn was very efficient, professional and thorough in fixing and installing our taps, he was happy to spend the time to discuss any plumbing needs we may have.
Great service, quality work, and prompt. Highly recommend.
What a fantastic crew of people. Great company overall. The first plumber Nathan assessed and attempted to clear our blocked drain pipes using the hydrojet method but the tree roots were seriously entangled/crushing pipes and required excavation. Jetset promptly returned the following day with extra machinery and crew and did a tremendous job. Also installed a toilet perfectly (and with a discount). Will be calling on Jetset for all plumbing needs.
Great service as always. Thanks very much Blake.
Great friendly service, really appreciated them fitting me at short notice.

We are open on Sunday

We are ready to help you - Call now!

Top 8 Reasons Why More Locals Choose Jetset Plumbing!

  • 1 Our Gold Medal Service
    More and more locals are leaving 5 star reviews on Google explaining their great experiences with Jetset Plumbing and the team.
  • 2 No Call Out Fees
    Never had them, never will! You should never pay for travel.
  • 3 Fixed Flat Rates
    You always know exactly what the job price is BEFORE we undertake any work.
  • 4 Our Famous Promotions
    Who doesn't want the opportunity to win? And win BIG! We have run so many AMAZING promotions over the years and they keep getting better! We are proud to say we have changed some of our customers lives!
  • 5 Fully Licenced Plumbers
    This is an obvious one! We do not send apprentices to your job. Only licenced plumbers with years of experience.
  • 6 Charitable Contributions
    Jetset Plumbing gives back to our local communities as they are the people who keep us in a job!
  • 7 Quality Workmanship Guarantee
    Peace of mind that we will return if something goes wrong.
  • 8 10% Pensioner and Senior Discounts
    Because every little bit helps!
BONUS Reason:
  • 9 Jetset Plumbing are partners with World Vision
    Money from every job is donated to World Vision for less fortunate people in our world. Locals know that the company they use serves a much larger purpose and is helping make a difference in our world.

RPZ Valve Test plumber

What is Backflow plumbing?

Backflow is a plumbing term that is used to describe when water flows in the opposite direction. If backflow were to occur in your home or business, it could cause contamination to your water supply. If left for too long, water can become unsafe to drink or bathe.

Backflow testing is required every 12 months for property owners that have; an irrigation system, fire hose reels, commercial machinery connected to the mains or an underground water tank that has a mains water backup.

What causes Backflow?

There a few causes for backflow to occur:

1. Reduced pressure in the water main.
Water systems are designed so that water flows under pressure to and from properties. However, if this pressure is not maintained, water could be drawn back into the water supply system. Many things can affect water pressure, including; a break in the main, water being pumped from the main supply in a fire, water outlet on the property is higher than the main, and a customer is using water at a high pressure than the pressure supplied by the local council.

2. A cross-connection between the drinking water supply and a contaminated source.
When water pressure drops, it creates a vacuum in the water supply system. Sometimes this allows liquid from a contaminated source back into the drinking water supply. Some incidences where this can occur include; in chemical plants where chemicals come into contact with the water supply, when a hose is left running in a container with chemicals, pipe work that allows recycled water to enter the drinking water supply.

3. A nearby property uses the water supply.
A dangerous chemical could get into the water mains which lead to a nearby property. If this contaminated water is then used, residents of the property could be seriously or fatally injured.

Why do you need Backflow Valve Prevention?

A backflow prevention device allows water to travel in one direction but prevents it from travelling backwards in the opposite direction. Every person’s garden and landscape around them have countless things that can make you sick if you drink them. Irrigation water alone has toxic chemicals (fertilisers, pesticides etc) and animal waste (urine and faeces) all through it. These harmful chemicals and pollutants will contaminate your drinking water if you do not have a backflow prevention device.

If you are on a community water system, the water could flow back up the pipes and poison your neighbours. The valves that turn on and off your water system are not sufficient to stop backflow, the purpose of a backflow preventer is to protect you when these valves inevitably break or leak. Many people think that the water pressure in the water system is enough to keep the water from flowing backwards.

Most of the time this is correct, however, there are times when the water pressure drops in the supply system allowing backflow to occur. If a water company has turned off the water supply to repair or install a new pipe, the pressure will drop, the same thing opens when fire-fighters pump huge amounts of water out of fire hydrants.

Backflow Pipes and Valves

What are the backflow prevention requirements in Queensland?

All local governments are required under state legislation to maintain a program for the registration, maintenance and testing of backflow prevention devices installed in their area. Backflow prevention devices stop the reverse flow of water from what could be a polluted source into the water supply. Backflow prevention devices are fitted on:

Irrigation systems that are connected to mains water supply

Fire hose reels

Commercial or industrial machinery connected to the mains

Water outlets close to pollutants, grease traps or chemicals

Underground water tanks that have mains water backup


Whenever a plumber fits a backflow prevention device, they are required to submit the report to the Backflow Register. Each year your local council will issue an Annual Registration Fee Notice and Testing Reminder Notice to the device owner, reminding them to arrange for their devices to be tested before 31 December. State legislation requires owners to register the device with the local government and have the device inspected or tested by a plumber endorsed for backflow testing.

What backflow device do I need?

Each property is designated a hazard rating (low, medium or high). You will need to consult an accredited backflow prevention plumber to determine your property’s hazard rating and the type of device needed. Low hazard properties should install a non-testable backflow prevention containment. Medium hazard properties must install a testable double-check valve assembly. High hazard properties must install a registered break tank, reduced pressure zone or registered air gap. If your property is deemed as a medium or high hazard you will have three months to install the device.

Why do you need a backflow valve replaced?

As a general rule of thumb when it comes to deciding to replace or repair a backflow device – if the repair cost exceeds 50% of the cost to replace the device, the best and most economical option is to replace it. Today, there are different materials that backflow valves are manufactured in: ferrous metals, non-ferrous metals and non-metallic materials. Non-ferrous materials include stainless steel which has become the preferred material for newer backflow assemblies. There are a few good reasons to make the switch to stainless steel backflow assemblies: they are up to three times lighter than ferrous backflows and easier to install; new valves are typically less expensive than a replacement of the old design; stainless steel will not corrode so there is no need to worry about epoxy chipping.

What are the different types of backflow preventers?

Reduced Pressure Valve (RVP)

For a commercial site (any business property, apartment complex or condominium) a RVP is the industry standard. This backflow preventer provides the highest level of protection and if anything were to go wrong, a commercial property owner is held to a very high standard of liability. Even if you reside in a residential family house, if you plan to use; fertigation, fertiliser, pesticides or apply anything other than pure water in your irrigation you must install and RVP. This includes products that are labelled as ‘organic’, ‘safe’ or ‘natural’ as while they may be safe when dispersed in the air, they will become much more toxic when concentrated in the water.

Double Check Valve (DC)

A DC valve simply has two spring-loaded check valves with a shut-off valve on either end. The DC valve is the only backflow preventer that does not have a vent that allows air to enter the lines or to allow water to escape when backflow occurs. A DC valve is the only type of backflow preventer that can be installed in a large vault with unblockage drainage.

Pressure Vacuum Breaker (PVB)

A PVB is generally installed on the mainline leading to the control valves. It must be installed above ground and be 150mm higher than the highest sprinkler head controlled by any of the valves. A PVB backflow preventer may spill water from under the cap when backflow occurs, as such, it should be installed in a location where water spillage would not cause problems.

Who can replace, install or remove a backflow valve?

Only a licensed plumbing contractor can replace, install or remove a backflow device. When a backflow prevention device is replaced, removed or installed it is the responsibility of the licensed plumbing contractor to submit the correct form to the Queensland Building and Construction Commission.

How much does a backflow valve cost?

The cost of a backflow valve differs drastically for each situation. Depending on how many valves you need, your hazard rating and what surrounds your area, the price will fluctuate. As a general rule of thumb backflow preventers fall into the following order, from most expensive to least expensive:

$$$ Reduced pressure valve

$$ Double check valve

$ Pressure vacuum breaker


Backflow RPZ Valve

What is a RPZ Valve?

A reduced pressure zone valve (RPZ) protects water supplies from becoming contaminated or polluted. This specific device is designed to be installed on safe drinking water lines to protect from backflow and potential contamination of the supply. An RPZ valve provides protection where a potential health hazard exists.

What is a RPZ Valve Test?

A RPZ Valve Test is required to be conducted annually, it tests for backflow and ensures the device is in good working order. Only a licensed plumber can carry out an RPZ valve test. Once the test is completed we will send the correct paperwork through to your local government.

What is a RPZ Valve?

RPZ (reduce pressure zone) and DC (double check) valves differ in that RPZ valves are preferred for higher hazard zones whereas DC valves are preferred for lower hazard zones.

Is your backflow prevention device in proper working order? If so, you will be drinking and bathing in clean water with no contaminants. However, if it is not working properly, contamination will occur, it is vital to have regular backflow testing to prevent this.

Call Jetset Plumbing on
1800 443 996

We Are Open 7 Days.
No Call Out Fees!

Tags: backflow plumbing, backflow plumbing Brisbane, backflow plumbing Gold Coast, RPZ Valve test.

$0 Call Out Fees
10% Senior Discount
100% Quality Workmanship Guaranteed

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Based on 1,394 reviews