Every week we have clients asking why we are required to install a TMV or tempering valve to their hot water system. The short, simple answer is because it’s the law.
The longer answer is because it’s about safety. A TMV or tempering valve reduces the risk of scalding. This is because storage type gas, electric, solar and heat pump systems are storing hot water at between 60° C and 75° C. You need to be aware a severe hot water burn can occur in one second when the water is delivered at 60° C or higher. Hot water burns like fire because:
- At 60°C, a severe burn can happen in 1 second
- At 55°C, a severe burn would take 10 seconds
- At 50°C, a severe burn would happen after 5 minutes
What is a TMV?
TMV or thermostatic mixing valve installed by Whywait Plumbing
A TMV is a thermostatic mixing valve but is commonly referred to as a TMV. The role of a TMV is to mix hot and cold water together to provide you with hot water delivery at your tap that is at a consistent temperature.
When we install your TMV, we set the temperature to deliver the hot water in all bathrooms at 45°C in aged care or childcare facilities or 50°C in all other bathrooms.
A TMV is compulsory for use when used in common areas for aged care or childcare. A TMV is very accurate and very responsive to fluctuations in incoming water temperatures keeping the temperature to within 1° C of the temperature that it has been set at when we install it.
Accuracy of temperature in the TMV is delivered by a thermally sensitive element which expands and contracts in response to the temperature fluctuations of the incoming cold and hot water. This expansion and contraction regulate the temperature by controlling how much cold water mixes with the hot water. An added safety feature of a TMV is that if cold water flows become too low, they shut down to prevent 60°C plus water being delivered.
What is a Tempering Valve?
Non-compliant tempering valve installation connected with flexihoses replaced by Whywait Plumbing
A tempering valve’s role is also to mix hot and cold water together to provide you with hot water delivery at your tap that is at a consistent temperature.
The tempering valve is a simple three-way valve that is temperature actuated to mix the hot and cold water. These days most come preset at 50°C and when we install them, we test them by measuring the temperature of the water from your hot taps in the bathroom.
A tempering valve is commonly used in residential homes as a one-off valve at the hot water service. A tempering valve is slower to respond to temperature fluctuations compared to a TMV plus it will deliver water to within 3°C of the temperature that it has been set at when we install it.
Which Valve do you Require?
The Plumbing Code of Australia in AS/NZS 3500.4:2018 is very specific about water temperature is section 1.11, which states:
- To avoid the likelihood of legionella bacteria growth, an installation shall store water at a temperature of not less than 60°C
- All new heated water installations shall deliver heated water not exceeding 45°C for the aged, the sick, children or people with disabilities in healthcare, aged care, early childhood, schools and nursing homes. For all other situations, heated water shall be delivered not exceeding 50°C.
Ultimately when we are installing a temperature control device, we are legally obliged to comply with the requirements above and much more as they are prescribed in AS/NZS 3500.4:2018.
Overall a TMV is more expensive to install initially compared to a tempering valve. However, a TMV has a much longer working life span compared to a tempering valve as they are more accessible to service and replace the working parts. A tempering valve, by comparison, is usually just replaced when it stops working as they are not easy to service or replace parts in.
In Queensland, all work undertaken on a TMV or tempering valve is reportable to the QBCC and must have a compliant Form 4 submitted. For your protection always demand a copy of your Form 4.
Here at Whywait Plumbing, we frequently get a phone call asking does insurance cover water leaks? Every week we are called upon to deal with insurance companies or assessors on behalf of clients when they have sustained water damage to their home.
With water leaks just like everything else to do with insurance, there seem to be multiple grey areas with numerous interpretations. It is our experience we find every time we deal with an insurance company where the circumstances of the water leak are similar to previous we meet with a different response.
The product disclosure statement issued with your policy is where we find all the confusion starts. This is where the insurance company hopefully discloses what is covered by your policy. If you find the product disclosure statement confusing then call the insurance company to clarify what the coverage is that you are paying for. The more questions you ask, the more you will understand. Remember there is no such thing as a stupid question. Also, remember insurance companies record all calls, so keep diary notes of when you called and who you spoke to. Better still send them an email confirming your phone call and what your understanding was of the answers you received. This creates an electronic paper trail that can be utilised at a later date.
Important Definitions & Clauses
There are three important definitions and clauses which appear to apply to the question does insurance cover water leaks:
- the “Water Damage Clauses” in the actual policy
- the definition of what is water damage
- the definition of what is gradual water damage
The Water Damage Clauses
The water damage clauses you should always read carefully and ensure you understand. Generally, it will have a section with several clauses and subclauses in the policy which will cover water damage and what you can claim for if you make a water damage claim on your home.
As a rule, it will state precisely what water damage your insurance policy covers and what is excluded. The exclusions are what you need to be aware of as often they will include an all-encompassing negligence clause coupled with a failure to maintain your home in good repair. If you have these general all-encompassing clauses, ask your insurance company what they precisely mean as we’ve seen these clauses used to deny coverage where it was in a very grey area and open to interpretation in their favour.
The Definition of Water Damage
Water damage can occur in so many ways that it’s generally not well defined in your insurance policy. In our experience, insurance companies specify water damage in two ways:
- accidental or sudden water damage
- gradual water damage
We’ve found that instances such as burst pipes, burst taps, burst valves, overflowing sewerage, overflowing stormwater and storm damage are covered by most insurance policies. This is because it was a sudden event that you could not have prevented.
In contrast, the damage caused by slow plumbing leaks in pipes, showers, toilets, gutters and roofs not damaged by a storm is not covered as they are classified as gradual water damage.
The Definition of Gradual Water Damage
Essentially gradual water damage is the insurance policy get out of jail free card. It is water damage they assess has occurred gradually over time. Frequently the water damage was visible to the trained eye but invisible to you as it covers the rotting of timber under the paint or mould in the walls, floor or ceiling. Essentially the insurance company will conclude you were negligent in not maintaining your home.
Examples of gradual water damage we frequently see are:
- seepage from leaking taps into cupboards
- leaking shower trays
- leaking shower taps
- leaking toilet cisterns
- leaking drain pipes
- rusted out sections in gutters and roof
The water damage from many of these occurrences is often not covered by your insurance policy as it will be concluded you failed to keep your home in good repair through regular and reasonable maintenance.
Water Leak Prevention
The best way to avoid an unsuccessful water leak claim is regular maintenance by Whywait Plumbing. Now this will not prevent every possible water leak scenario happening, but it will demonstrate to the insurance company that you have been undertaking regular maintenance.
At Whywait Plumbing, we see instances every day of water damage that has occurred through the failure to maintain your home regularly. That is why we recommend all our clients to become a Service Partner and enjoy the VIP benefits of having a Service Partner Plan to maintain your most valuable asset, your home, proactively.
Zeroflush waterless urinals installed at Brisbane International Airport
ZeroFlush Waterless urinals supplied and installed by Whywait Plumbing are precisely what they sound like. Instead of using water to flush away the urine, like traditional urinals which waste anywhere up to 25 litres of water every time they flush. ZeroFlush waterless urinals utilise gravity, putting urine through an odour barrier or one-way valve system which eliminates 100% of the water from a conventional flushing process.
Replacing a water flushing urinal with a ZeroFlush waterless model can save an average of 152000 litres annually per urinal. There’s one urinal for every three toilets in non-residential properties, which together account for more than a quarter of Australia’s water consumption.
The supply of water to commercial office buildings, shopping centres, educational facilities and hotels utilises a substantial amount of energy. The simple act of installing ZeroFlush waterless urinals and the disconnection of urinals from a buildings water reticulation system can reduce by 50% a building’s greenhouse gas emissions.
Throughout Australia, water charges continue to increase annually. The advent of sewerage discharge factor charges based on the amount of water consumed is increasing in popularity. These charges alone require reductions in water consumption to avoid substantial annual increases. For commercial property managers, this means they must budget for paying for water coming into the building and also going out via the sewage system. This means the installation of ZeroFlush urinals will not only aid with sustainability but reduce water and energy costs.
The urban myth that waterless urinals are unhygienic and stink is a myth perpetuated by opponents of waterless urinals that has no foundation in fact. A recent study by th
e Shanghai Environment Project Design Institute once again proved that waterless urinals contain five times fewer bacteria than water flushing urinals. Bacteria and germs from water flushing urinals are created by airborne fecal matter that is reproduced when the urinal flushes water. The combination of water moisture with the fecal matter creates the perfect environment for bacteria to grow and flourish. As waterless urinals don’t flush water every time they have been used the opportunity for bacterial and germ contamination becomes very remote.
The real reason most male bathroom facilities have putrid odours is triggered by the bacteria created from airborne fecal matter and water moisture. Urine by itself has a very soft odour but combined with the water flushing urinals spraying of water particles it can quickly create odours over the entire bathroom facility.
ZeroFlush waterless urinals are a guaranteed path to reducing water and energy consumption plus greenhouse gas emissions in any non-residential commercial building. Installing them will always help water and energy sustainability.
A burst flexi hose is a job we attend to almost every day. In all likelihood, you will have multiple flexi hoses in your home. They will exist commonly in both residential and commercial buildings under the kitchen sink, under the bathroom vanity basins, under the toilet cistern and under the laundry tub. Invariably when we attend to a burst flexi hose it has been damaged during installation causing kinking and has further experienced corrosion. Almost always the burst flexi hose was a time bomb waiting to happen. The braided stainless steel “simple to install” flexi hose has over the last 10 years replaced copper pipe connections to taps and toilet cisterns. Unfortunately, the braided stainless steel flexi hose has not lived up to expectations and delivered on the rust protection anticipated. In our experience, a burst flexi hose is caused by:
- incorrect installation with multiple kinks in the braided stainless steel
- stretching of the flexi hose to make the connection fit
- chemical attack from household cleaners
All of the above can create the perfect storm scenario in causing the braided stainless steel to corrode and rust. It then is just a matter of time until the stainless steel braiding fails which allows for the inner liner to burst. Here at Whywait Plumbing, we are now installing a polyamide hi class water hooker from Abey Australia which is the most technologically advanced flexi hose we have seen come onto the market. The Abey polyamide hi class water hooker cannot rust or corrode as it uses polyamide braiding that is similar to the Kevlar used in bulletproof vests. The connectors are manufactured from brass alloy so the entire flexihose will never rust even if its continually in contact with chemicals such as chlorine.
We are confident you will never experience a burst flexi hose once we install the Abey polyamide hi class water hooker as they literally cannot rust and cannot kink but best of all they come with a 15-year rust resistant warranty. Kinking is often the cause of a burst flexi hose but cannot occur with the Abey polyamide hi class water hooker. Kinking is simply poor installation as a result of over tightening the connector which twists the stainless steel braided hose. This over tightening creates pressure and tension in the braiding which frequently results in the inner liner bursting through the braiding and rupturing. The Abey polyamide hi class water hooker has a simple design to ensure that it is anti-kink. When we install the Abey polyamide hi class water hooker we are able to use two spanners to counteract any twisting that results in kinking.
Most of the flexi hoses currently used have an inner lining manufactured from EPDM which has the potential to absorb and release harmful chemicals such as chlorine into your drinking water. This ability to absorb chemicals also results in a potential burst flexi hose. With the Abey polyamide hi class water hooker the inner lining is manufactured from Softpex Core. The Softpex Core inner liner gives a superior mechanical performance to EPDM guaranteeing a longer life due to its higher tensile strength, higher abrasion resistance, higher working water pressure and non-corrosiveness. The extensive age/stress testing undertaken resulted in an amazing 0% failure rate.
We strongly recommend that you get us to check your flexi hoses every year for rust and/or corrosion and that they are replaced every five years. This will give you the peace of mind in knowing that the flexi hose in your home or business is not rusting and about to explode releasing water at 25 litres every minute that it flows. Rust is the #1 enemy of a braided stainless flexi hose.
When we replace your existing stainless steel flexi hoses with the Abey polyamide hi class water hooker we guarantee you will get:
- superior strength and corrosion resistance
- tested and WaterMark approved for use in Australia
- superior tensile strength
- superior working water pressure
- a superior mechanical performance with the Softpex core inner liner
- a 15-year rust resistant warranty from the manufacturer
As always we must caution you that installing or replacing a flexi hose is not a legally compliant DIY installation and under Queensland law must be done by a licensed plumber. You need to be aware that undertaking a DIY installation has the likelihood of making your insurance coverage null and void and the manufacturer’s warranty null and void if the flexi hose bursts and causes damage. Don’t wait for the ticking time bomb of your existing stainless steel braided flexi hoses to strike! Call us now to get us to upgrade you to the Abey polyamide hi class water hooker.
Plumbing innovations have always been the norm in the plumbing industry. Innovation is change and is always about better ways of doing the same thing.
When I started my apprenticeship the clearing of a blocked drain started using a plunger and was at least a two-man job using 1m long drainage rods. The rods were screwed together and manually pushed slowly down the drain until we hit the blockage. Clearing drains this way frequently took 3-4 hours.
Plumbing innovations mean that we now clear a blocked drain with state of the art high-pressure jetrodding technology that was unknown 20 years ago.
Innovation is always about change, but at Whywait Plumbing we have always been at the forefront of plumbing innovations. We have always lead change as Gold Coast plumbers from the purchase of our first high-pressure water jetting unit in 1992 or installing vehicle tracking systems or introducing guaranteed upfront pricing in 1999.
What we always considered was developing and improving our way of solving your plumbing problems is now referred to as disruptive innovation. I agree disruptive innovation is the new term in business in the 21st century. But it’s not new it’s just a new way of talking about improving our methods and practices using the latest technology.
Change is the norm, but it just appears to be frantic to an outside observer with online banking, online shopping, online flight bookings and so the list goes on. At least with plumbing, it can’t be done online except for those DIY enthusiasts who believe Google Plumbing has all the answers.
The level of disruption through plumbing innovations has impacted all plumbing installation and maintenance has been significant starting with:
- Increasing use of prefabrication of bathroom and kitchen modules off-site where the plumbing is all undertaken in a factory, transported to the site and connected up to a water and drainage connection.
- Continual advances in sustainability with the advent of low flow toilets, low flow taps, waterless urinals and recirculated hot water.
- Advances in energy efficient products with heat pump hot water units, solar hot water, instant hot water and underfloor heating.
- All of the different materials we now use in the pipework, relining of existing pipework, CCTV cameras to inspect pipes and pipe jointing methods where welding is now obsolete.
- Excavation methods with advanced technologies in hydro excavation and tracking and locating of underground services.
The ongoing changes in technology in the plumbing industry are disruptive if not embraced. I agree that plumbing innovations cause a significant difference in how we undertake to solve plumbing problems and how the plumbers at Whywait work now.
Ultimately plumbing continues to be about protecting the health and safety of the community for now and the future to ensure we have good quality water and sewer systems in our buildings.
ZeroFlush waterless urinals are an increasingly widespread investment being made by architects, hydraulic engineers, facilities managers and building owners throughout Australia because they help conserve water.
Here at Whywait Plumbing, we concur that there are conflicting arguments about the amount of money they save. ZeroFlush waterless urinals do operate without flushing any water, so they will always save water first and foremost. But when making a case for their installation and the investment in maintaining and operating them the best evidence is they are environmentally and sustainably superior to every water flushing urinal.
Installation of ZeroFlush waterless urinals as a corporate responsibility effort should always be a consideration, but here at Whywait Plumbing our experience with ZeroFlush enables us to give you a performance guarantee.
On current Gold Coast Water charges we can guarantee installation of ZeroFlush waterless urinals will reduce your water and sewer discharge costs.
Contact us at Whywait Plumbing now to discuss how you can benefit by installing ZeroFlush waterless urinals as we can guarantee the following:
- the reduced capital cost to install as no expensive electronic water flushing systems are required
- reduced maintenance costs with no water reticulation valves to maintain
- simple and easy cleaning procedures with our natural enzyme cleaning products
- reduction in blocked drains and drainage traps
- all products used in the manufacture and maintenance of ZeroFlush waterless urinals are environmentally sustainable
Determining exactly how much water a ZeroFlush waterless urinal keeps from the Gold Coast Water sewer system is somewhat complicated. The number depends on a variety of arguable variables, such as the amount of water that a water flushing urinal would use, the number of people using the urinal and how often those people will use it.
A single water flushing urinal can use anywhere from 50,000 litres to 180,000 litres of water every year. Once again this is based on multiple variables such as the size of the building, the number of male employees and how many times they use the urinal each day. A building such as a factory with one bathroom facility, three ZeroFlush waterless urinals and 120 male employees, would save approximately 900,000 litres of water each year.
Calculating the payback period for installing ZeroFlush waterless urinals can be a complicated process. Using the average of $9 per 1,000 litres of water from Gold Coast Water and the example of an office with four men working in it, we can come up with some estimates.
Let’s say each man flushes a urinal 2,000 times per year or about 5.5 times per day, meaning that the four men flush the toilet 4,000 times a year in the office. With an older, water flushing urinal using 15 litres per flush will use 60.000 litres, costing about $540 every year just for water.
Ultimately, ZeroFlush waterless urinals save more water than money, but we guarantee that they are still worth the investment in sustainability.