WILKINS 350AR - 6" - OSY-B (up to 71 1/4") - (6-350AROSY-B) - 350AROSY6B
Zurn Wilkins 6-350AOSY 6" Double Check Valve Assembly (DCVA) Backflow Preventer with OS&Y (Open Stem & Yoke) Flanged End Gate Valves, Lead-Free Engineering Specification: The Double Check Backflow Prevention Assembly shall be certified to NSF/ANSI 372, ASSE® Listed 1015, and supplied with full port open stem & yoke gate valves. The main body and access cover shall be epoxy coated ductile iron (ASTM A 536 Grade 4), the seat ring and check valve shall be NORYL™, the stem shall be stainless steel (ASTM A 276) and the seat disc elastomers shall be EPDM. The checks shall be compound type, and accessible for maintenance without removing the device from the line. The Double Check Backflow Prevention Assembly shall be a ZURN WILKINS Model 350AOSY.