Hot Water and How To Protect Your Family:
“When I visit my 81-year-old mother, she complains that her shower is too hot. I’m concerned that she will scald herself while bathing. Is there something that I can do to help prevent her from suffering a serious injury?”
This is a great question and can also be appropriate with a new born baby, infant or child, someone with dementia or a disability and yes there are options so that everyone has piece of mind.
In all new hot water installations it is a requirement by law that a tempering valve be installed on the outlet of the hot water systems when delivering hot water to a bath or shower and is set at a maximum of 50 deg C.
A bypass line can also be run from the hot water supply so that you can still maintain hot water above 50 Deg C to the laundry trough and kitchen sink.
Therefore on older installations prior to the mandatory installation of a tempering valve; your family may be at risk to scolding.
Another option is to install a Thermostatic Mixing Valve (TMV). These can be found in and are mandatory within nursing homes, hospitals, day care infant centres for example. A thermostatic Mixing Valve has the added protection that if the cold water supply is interrupted then the mixing valve shuts down the hot water supply to the fixtures that it is connected to.