MITEMP AUTOMATIC PRESSURE-BALANCE VALVE (151844)

Holds a selected water temperature to within one degree from any constant hot water supply regardless of pressure changes in the supply-lines
It ensures a blend of mixed hot and cold water at the showerhead and is fully automatic – only one moving part will equalize the hot and cold supply line pressures
As supply line pressures fluctuate, the brass piston will move enough to compensate for the change in pressure and release water only at the preselected temperature