Tempering Valves

What is a tempering valve and why is it needed?

What is a tempering valve and why is it needed?

Scalding is one of the most serious, painful and long-term injuries for young children.  Scalding can happen very quickly, depending on the temperature of the water.  

For example, at 60°C a serious burn can occur in 1 second.  However, at 50°C a serious burn wouldn’t typically happen until after 5 minutes.

A tempering valve mixes your hot and cold water to deliver hot tap water at a constant temperature of 50°C.  
From 1 July 2012 NSW Fair Trading made it a requirements that all new hot water installation are required to have a tempering valve fitted.
 
Tempering valve flow chart