What is a Moen Posi Temp valve?
Consequently, how does the Moen Posi Temp valve work?
The Posi Temp Valve is exclusive to Moen. According to Hunker, the Posi Temp Valve has a unique handle that rotates a quarter turn in one direction for the hot water, and a quarter in the other direction for cold water. When the valve is pointing straight down, it is off.
Hereof, are all Moen Posi Temp valves the same?
For many years Moen tub/shower valves have been manufactured using one of three valves. These valves are Standard, Posi-Temp and Moentrol. Although the look is similar, the trim is not necessarily interchangeable. If this is the way your Moen valve operates, any Posi-Temp trim will fit.
The original Moen cartridge, the 1200 provided one-handle operation. It was used in all one-handle faucets, except the Posi-Temp shower valve, prior to the introduction of the 1225 in 1981.