Outside Screw and Yoke Supervisory Switch

OSY2 and OSY2A outside screw and yoke supervisory switches monitor the open position of an outside screw and yoke (OS&Y) type gate valve. The switches consist of a rugged housing intended for indoor and outdoor use. When installed with the actuator in the vertical position, the OSY2 switches are NEMA 3R rated per UL. OSY2 switches feature a user-friendly mounting bracket and adjustable shaft to permit mounting to most OS&Y valves from 1 to 12 inches (2.54 to 30.48cm). The right-angle design and wide bracket span provides maximum clearance for valve components, accommodating troublesome valves. Removing the gate valve bracket allows the unit to monitor side-bracket-style pressure reducing valves.

Installation is made easier with a single-side conduit entrance. By providing a direct conduit pathway to the electrical source, right-angle fittings are not required. Installation is further simplified by the adjustable-length actuator, which eliminates the need for cutting the shaft.

The switch is equipped with tamper-resistant cover screws to prevent unauthorized entry. Inside, two sets of SPDT (Form C) synchronized switches are enclosed in a durable terminal block to assure reliable performance.

• NEMA 3R rated enclosure
• User-friendly mounting bracket fits newer valve yokes
• Adjustable length actuator eliminates the need for cutting the shaft.
• Accommodates up to 12 AWG (3.31mm²) wire.
• Three-position switch monitors vandal and valve-close signals.
• Two SPDT contacts are enclosed in a durable terminal block for added strength.
• 100% synchronization activates both alarm panel and local bell simultaneously

• UL Listed: file S739 ULC Listed: file S739 (model OSY2A) CSFM approved: file 7770-1653:118 FM approved MEA approved: file 167-93-E