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The Potter Electric OSYSU-1 is a supervisory switch designed to monitor the open position of OS&Y (outside screw and yoke) type gate valves. This switch features a single set of SPDT (Form C) contacts.
The OSYSU-1 mounts conveniently to OS&Y valves sizes ranging from two inches to twelve inches, with some compatibility for half-inch valves. It is secured with tamper-resistant screws, and includes a special tool for cover removal.
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