OS&Y Gate Valves
Deringer 20G, 30G, 40G and 50G Backflow Assemblies include two resiliently seated and inline serviceable AWWA C509 gate valves of type outside yoke and stem (OS&Y). Both gate valves shall include a stainless steel stem with pre-machined groove for installation of supervisory tamper switches. OS&Y gate valves make operation simpler, due to their easy-to-access placement. The short lay-length and lightweight body of these devices also make installation a breeze. Check out our Deringer Backflow Preventers with OS&Y gate valves today. You won’t be disappointed!