I have a PVC pipe that supplies water to a valve, and then goes to my toilet. It's approx 1/2" inner diameter, and 5/8" outer diameter; it's stamped on the outside of the pipe that it is 1/2". The standard run of the mill PVC 1/2" that is "Schedule 40" is about 0.8" outer diameter, but is also stamped 1/2"
The valve fitting seems to fit the 5/8" outer diameter one and the valve is labeled for 1/8" nom., and of course then would not fit standard Schedule 40 1/2". Can someone clarify the difference? Is there some sort of PVC pipe type I do not know of?