|Brass ON / OFF Valve for shower valve replacement. This part is designed for replacement in suitable 3 dial thermostatic shower valves. This part is from the middle of the three dials (water on / off).
The main barrel is 28mm in diameter (at the widest part just behind the black washer) and overall length 80mm.
3/4" Replacement Brass Ceramic Disc Tap Valve Cartridge Turn Quarter
AquaLusso have produced this helpful video guide to show you have to replace the ON OFF valve