The model 9256 Hydro Indexing Valve has one inlet and six outlets which are all made to fit 1" slip fit pvc. This valve is recommended for use in a city water driven irrigation system and can run from 5 to 6 zones based on the chosen cam configuration. The standard flow stem and disc assembly requires a minimum of 10GPM.Please remember that pipe size is measured by inside diameter. This valve is made to accept 1? pipe on the inlet and outlets. The outlets and inlet will be larger than the pipe size it receives.