
A mixing valve that automatically maintains the temperature setting by regulating fluctuations in water temperature at the water inlets and immediately adjusting the ratio of hot and cold water that is discharged by the valve.
Found on
http://www.encyclo.co.uk/local/20933

A shower mixing valve with automatic temperature control. When temperature fluctuations occur at the water inlets, a thermal actuator adjusts the hot and cold ratio to maintain the original temperature setting.
Found on
http://www.tjader.com/glossary.html

Pressure-balancing shower mixing valve with automatic temperature control. When temperature or pressure fluctuations occur at the water inlets, a thermal actuator adjusts the hot and cold ratio to maintain the original temperature setting.
Found on
https://www.encyclo.co.uk/local/22545
No exact match found.