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OSY-SU Supervisory Switch

OSY-SU

Features & Quick Specs

• Used to monitor the open position of an OS&Y (outside screw and yoke) type gate valve
• Mounts conveniently to most OS&Y valves ranging in size from 2″ (DN50) to 12″ (DN300)
• Can be used on some valves as small as 1 ⁄ 2″
• Circulates single sprinkler flow and allows testing of flow switch without external discharge of water – replaces traditional Inspector’s test procedure