They are sliding valves that change the ratio of hot and cold water that passes through your tap, reducing the risk of scalding.  A member of the Ruttley Services team will adjust the valve to the preferred temperature, which will then be controlled to within 3%.

They have temperature sensitive elements that regulate temperature, even when there are variations in incoming water flow conditions.

Tempering valves reduce your risk of scalding by ensuring users are never exposed to temperatures of more than 50°C, a temperature high enough for hot water to be stored without risk of bacteria, yet safe enough for domestic use.

Scalding can cause serious, long term injuries and can occur in just one second in water at a temperature of 60°C, compared to five minutes for water at a temperature of 50°C.

Un-tempered hot water can produce water at temperatures over 68°C, which significantly increases the chance of serious burns in under one second. Since 90% of scalding cases occur in the home, a tempering valve goes a long way in preventing serious hot water burns.