The Zurn Wilkins 700 Dual Check Valve Assembly protects against backsiphonage and backpressure of polluted water. The 700 is suitable for low hazard non-potable applications.
The Dual Check Valve Backflow Preventer shall be ASSE® Listed 1024. The main body shall be cast bronze (ASTM B 584), the check assemblies shall be NORYL ® (1/4”-1/2”) or DELRIN ® (3/4”-1”). The seal ring and orings
shall be Buna Nitrile. The Dual Check Valve shall be a ZURN WILKINS Model 700.
Designed for installation on water lines to protect against both backsiphonage and backpressure of polluted water into the potable water supply. The Model 700 shall provide protection where a potential health hazard does not exist.
Sizes: 1/4", 3/8", 1/2", 3/4", 1", 1-1/4"
Max. pressure: 175 PSI
Max. temp: 180°F
Connections: Threaded ANSI B 1.20.1
Copper sweat ANSI B 16.22
Meter thread ANSI B 1.20.7
Meter Thread Connections When ordering a Model 700 with meter thread connections, order the connection one size larger than the water meter. For example, if your water meter is 1/2” or 5/8” your connection size would be a 3/4” meter thread. If the water meter is 5/8” x 3/4” or 3/4”, your connection size would be 1” meter thread.
Local codes shall govern installation requirements. Unless otherwise specified, the installation shall be in accordance with the manufacturer’s instructions and the latest edition of the Uniform Plumbing Code. The installation shall be made so that no part of the unit can be submerged.