Water hammer or banging pipes aren’t just annoying they’re a warning of bigger problems

Water hammer or banging pipes aren’t just annoying they’re a warning of bigger problems

What is water hammer?

Water hammer or banging pipes are differing faults with your water reticulation system.

In theory, you should never hear the sound of water moving through your hot or cold water pipes. All you should ever hear is the water flow from the tap or fixture in the room it’s installed in.

Essentially water hammer is a shock wave created inside your piping.

What causes water hammer?

Plumbing is essentially the movement of water through pipes. It, therefore, has the potential to be noise creating and create what is referred to as water hammer. 

Water hammer that is noticeable occurs with copper water pipes. But plastic water pipes also suffer from water hammer, and it’s just harder to hear it.

Water hammer audible noise in copper pipes is generated primarily by:

  • High water pressure

  • Quick closing mixer taps

  • Quick closing solenoid valves

  • Faulty or worn brass seats in taps

  • Broken tap washers

  • Airlocks in pipes

  • Shock waves in pipes

Common noise complaints

There are four very common noise complaints with water pipe reticulation systems being:

  • Sharp banging or hammering sounds coming from pipes

  • A series of loud bangs when the washing machine or dishwasher is in operation

  • A loud bang from a valve or tap

  • Audible ticking sounds that diminish after the tap is turned on

An intense banging or hammering is a result of faulty valves, defective mixer taps, defective solenoid valves, broken taps or broken tap washers or poor clipping of pipes.

A series of loud bangs while you are using the washing machine or dishwasher is caused by the instantaneous opening and closing of the solenoid valves in the machine as it traverses through its cycle.

Excessive water pressure can accentuate all of these causes as water pressure legally cannot exceed 500kPa inside the building.

The ticking sound can build up then diminish and are in fact the sounds generated by pipe expansion. This is caused by the pipe heating up when the hot tap is turned on as the hot water replaces the cold water and then cools down.

Water hammer is a shock wave

Water hammer will occur much more if your pressure is excessive. The common causes of water hammer are quick closing mixer taps or solenoid valves on washing machines and dishwashers.

In the picture above the shock wave is generated at the face of a quick closing mixer tap because the flow of water moving under pressure is stopped suddenly by the instant turning off of the mixer tap. The shock wave then ricochets back from the face of the mixer tap cartridge, through the stationary water in the pipe.  The shock-wave creates enormous pressure moving at 1280 meters per second through the pipe.

This same effect is replicated more intensely by the solenoid valves in your washing machine and dishwasher as unlike mixer taps they instantly open and shut as you machine moves through cycles.

Water hammer is an early warning alert

All of the sounds or the audible noise commonly referred to as water hammer tend to be highlighted in copper water pipes. Water hammer still exists in plastic piping systems, but it is diminished significantly as the plastic pipe absorbs the sounds.

Your plumbing reticulation pipes, taps, valves and appliances are all susceptible to damage caused by the impact of shock waves even if you hear no noise.

The noise is essentially an early warning system telling you to rectify the problem before damage occurs.

Water hammer is avoidable

Water hammer is avoidable and can be rectified regardless of whether you have copper or plastic water reticulation piping.

Banging or noisy pipes usually occur when the water reticulation pipes have not been clipped correctly as per AS/NZS 3500.1 : 2018 when the house was originally constructed. This can be much more challenging to rectify compared to water hammer.

To prevent damage to plumbing pipes, taps, fixtures, hot water valves and appliances both the noise element and shock wave element of water hammer need to be eliminated.

The noise element is auditory. The loud bang of water hammer when you turn off a tap or your washing machine is running alerts you to water hammer problems. Without the noise, there will be no indication of a problem until the damage is caused or your home is flooded by a burst flexihose or appliance hose.

The elimination of the water hammer eliminates the shock waves which impose undesirable stresses on reticulation pipes, flexihoses and appliances.

How to avoid house flooding this Christmas

How to avoid house flooding this Christmas

This Christmas I can guarantee that burst plastic water reticulation pipes or burst flexi hoses will create more emotional stress and insurance claims than fires and burglaries combined.

How to avoid house flooding is becoming more challenging as we continually add more and more water connections inside our homes. Insurance companies are experiencing year on year increases in ever-increasing water damage insurance claims. The average insurance claim from internal water damage flooding has increased from $17627 in 2014 to $30361 in 2018.

how to avoid house flooding is why whywait Plumbing recommend when your house is empty to turn off your water supply
A collapsed ceiling from a water deluge above caused by a burst pipe

If you are going away on holiday this Christmas and New Year holiday season and leaving your home empty then I only have one recommendation. And that is before you drive off walk over to your water meter box and turn off the water supply.

How to avoid house flooding is simple if you turn your water off at the council water meter. By undertaking this simple task I can 100% guarantee you will not arrive home to a flooded house caused by a burst water pipe.

I’ve written frequently over the last 10 years about the issues we see every week with homes getting flooded. We’ve witnessed an ever-increasing amount of homes having plastic water pipes and flexi hoses being installed. In turn, we have seen an ever-increasing number of burst flexi hoses and split plastic pipes flooding homes.

In all likelihood even if you have copper water pipes you will still 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.

Every flexi hose is potentially a ticking time bomb. It has become so common that we attend to burst flexi hoses every day. In 1 hour a burst flexi hose can discharge 1500 litres of water so in 1 day that could be 36000 litres of water. We’ve all experienced how far a spilt glass of water runs on a floor so imagine how far 108000 glasses of water will run.

We have multiple solutions available to prevent flooding in your home ranging from AquaTrip valves at the boundary that turns the water off automatically to individual auto shut off valves for flexi hoses.

If you have any concerns about your water pipes, flexi hoses, fridge connections or valves in your home and don’t want to have one of our plumbers spending part of Christmas Day with you then call us today.

In 2019 as we have done so for the last 43 years we will continue to provide full plumbing, drainage and gasfitting services every day up to and right through the upcoming Christmas holiday and 2020 New Year holiday period.

Our normal emergency plumbing services will be available 24/7 as always on:

  • Christmas Day, Wednesday 25 December
  • Boxing Day, Thursday 26 December
  • New Years Day, Wednesday 1 January

Public holiday diagnostic fees will apply to all call outs on those days except for Whywait Service Partners.

I’m always mindful that Christmas greetings can become superficial but even so everyone here at Whywait Plumbing Services wishes you and your family a Merry Christmas and a prosperous 2020. Remember the best of gifts around your Christmas tree on 25 December in the presence of a happy family with a toilet that flushes and a tap that turns off.

Every Flexi Hose is Potentially a Ticking Time Bomb

Every Flexi Hose is Potentially a Ticking Time Bomb

Abey polyamide hi class water hookers installed by Whywait Plumbing to eliminate a burst flexi hoseA 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 hi class hooker flexi hose installed by Whywait PlumbingAbey 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 Abey polyamide hi class water hooker installed by Whywait Plumbing does not kink so you never experience a burst flexi hosepressure 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 the softpex inner core in an Abey polyamide hi class water hooker installed by Whywait Plumbing ensures you never experience a burst flexi hosechlorine 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.

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