It’s time to have a yarn about water temperature safety. When you get in the shower after a long day, you’re likely not thinking much about the inner workings of your plumbing when you turn on the tap and enjoy that blissful warm water. However, there’s a bit going on behind the scenes to provide that relaxing flow, and if you don’t maintain it, that perfect temperature shower could dry up real quick.
So, let’s have a look at the little device that mixes your water to the perfect temp and keeps you safe from scalds: the Thermostatic Mixing Valve.
What is the Thermostatic Mixing Valve
The Thermostatic Mixing Valve, or TMV to keep it short and simple, is an important component of your plumbing setup, making sure you get the right temperature for your shower, tap or appliances every time. This little valve automatically mixes hot and cold water to control the temperature from your taps or showerheads.
TMVs are also preset, during installation by a qualified plumber, not to exceed certain temperatures–usually a maximum of 45 degrees Celsius depending on the property–to keep you safe from nasty burns or scalds. Additionally, if your hot or cold water supply fails, this device will shut down and cut off your water supply to protect you from high temperatures or thermal shock.
Applications of TMV
TMVs are a common alternative to tempering valves that provide added protection from dangerously high or low-temperature water. TMVs can be installed on any property for added protection and peace of mind, however, they are most common in settings where high-risk persons such as children or the elderly are present. For this reason, many homeowners may choose to install a TMV to protect their family when starting a family or having their aging parents move in with them.
Many commercial facilities also use TMVs to protect their inhabitants or clients from scalds. These businesses often include:
- Childcare facilities and schools
- Hospitals and respite centres
- Aged care homes
- Shopping centres
- Hotels and other holiday spots.
Importance of Regular Maintenance
Like any aspect of your plumbing or property, these little valves also need a little TLC every now and again. With proper installation, TMVs should work properly for a long time without issues, however, for peace of mind and compliance they need to be tested and maintained annually.
Under the Australian Standard 4032.3:2022 TMVs must be serviced and tested annually by a qualified plumber to ensure correct temperature settings and function. This standard also states that the o-rings and thermostat need to be replaced, also by a professional plumber, every five years.
By adhering to the regulations and maintaining your Thermostatic Mixing Valve annually, you can ensure that your water supply will never exceed safe temperatures.
How to Maintain Thermostatic Mixing Valves
With a little TLC, attention to detail and some help from plumbing experts, you can keep your TMV working like a pro, keeping you safe and providing the perfect temperature showers every day.
So, here are a few things you can do to maintain your Thermostatic Mixing Valve:
Annual Inspections
As per Australian regulations, you need to be getting your TMV inspected at least once a year. This includes checking for signs of wear and tear, leaks, corrosion, loose components, strange sounds and any other abnormalities.
While you can do an initial inspection yourself, to stay compliant and ensure the most thorough check, you also need to contact a plumber who specialises in Thermostatic Mixing Valves. These plumbers will also be able to check the strainers and filters for sediment build-up that could impact performance.
We also want to note that if you notice any issues inside the yearly checks, you need to schedule repairs ASAP to prevent further issues or potential injuries.
Cleaning and Lubrication
During a professional inspection, plumbers will also be able to clean your TMV and apply fresh lubrication to the moving parts as necessary. This maintenance helps to prevent corrosion or damage.
While inspecting the components, they will also advise you of any repairs or replacements that may be required to maintain your TMV and prevent issues down the line.
Checking and Adjusting Temperature Settings
Thermostatic Mixing Valves have built-in thermometers that show the temperature of the water being supplied to your fixtures. It is good practice to take note of the readings throughout different times of the day and the year during and between uses.
Staying aware of any fluctuations in the temperature can allow you to catch issues early and schedule timely maintenance before danger strikes. Higher temperature readings could also signify that someone has tampered with the valve, this is not only dangerous but also could potentially leave you unprotected from warranties, insurance and legal action in the event of serious burns.
Professional Testing
During annual inspections, professional plumbers will also complete a range of tests to ensure that the built-in safety features are functioning properly. This includes making sure that the valve shuts off the water supply from taps and showerheads if the temperature exceeds the set limits, or if there is no hot water supply.
If your TMV fails the tests, our experienced TMV plumbers will advise you of the best course of action and implement any repairs or replacements to ensure safety and performance.
Prevent Scalds with a Well-Maintained Thermostatic Mixing Valve
In conclusion, Thermostatic Mixing Valves are an important part of keeping your showers safe and comfortable. Without these devices, your water could potentially reach dangerously high or low temperatures causing scalds or thermal shock.
Knowing the importance of these devices and how to maintain them can help restore your peace of mind and protect you, your family or your clients. Whether it’s been a while or you suspect issues, contact our experienced plumbing family at Mario’s Plumbing & Drainage today to schedule an inspection of your TMV.
