Toro EZ-Flo NPT MxB Valve with Flow Control, 1" PVC, Glass-Filled Nylon and Stainless Steel Construction - Provides longer life span and leak protection in nearly any environment Double-beaded, Chloramine and Ozone-Resistant Santoprene Diaphragm - Ensures a consistent, leak-proof seal all the way up to 150 psi (10,3 Bar) Jar-Top Design - Requires no screws and provides fast and easy servicing In-Line or Anti-Siphon Models - Ample selection for new and retrofit installations