Well, keep in mind I'm not a mechanic.
I think you mean a PCV valve, not a PVC valve. PCV stands for Positive Crankcase Ventilation. A system using a PCV valve evacuates gases from an engine's crankcase, and I believe they always go on top of the crankcase. It's purpose is for fuel economy and the environment.
For more info goto wikipedia:
http://en.wikipedia.org/wiki/PCV_valve
PolyVinylChloride - its the material its made from - PVC.
PVC - Positive Crankcase Ventilation. Used to allow the engine to vent out pressure that is creates while operating. Generally it is vented back into the air intake system after the air filter to get "burned" in the combustion chamber.
Polyvinyl chloride PVC = polyvinyl chloride, a synthetic resin preparedd by the polymerization of vinyl chloride
PolyVinyl Chloride
where is the PVC valve on a 2000 Chevrolet S-10 2.2 engine
yes
It goes in the side of the housing with the oil filler cap on to.
Poly vinyl cloride
how remuve and remplece pvc
Unplastcized polyvinyl chloride
Outside diameter
a PVC hose is a hose connected to the back of the intake manifold to the front of the engine