Toro TPV Valve NPT FxF Valve with Flow Control, 1" Patented DBS (Debris Bypass System) Technology - Metering system ensures proper functionality, even in tough environments Tough Double-Beaded, Chloramine and Ozone-Resistant Santoprene Diaphragm - Ensures a consistent, leak-proof seal all the way up to 175 psi (12,0 Bar) Multiple Body Styles - Choose from various styles to meet any installation requirement