Potter OSYSU Series

Outside Screw and Yoke Valve Supervisory Switch

The Potter OSYSU Series Outside Screw and Yoke (OS&Y) Valve Supervisory Switch monitors the open position of OS&Y gate valves and comes in two models: OSYSU-1 with a single switch and OSYSU-2 with a double switch. Designed for rugged environments, this device features tamper-resistant screws, operates in extreme temperatures, and is compatible with valves from ½” to 12”.