System Sensor OSY2A

The System Sensor OSY2A Outside Screw & Yoke (OS&Y) Valve Supervisory Switch is designed to monitor the fully open position of Outside Screw & Yoke (OS&Y) gate valves installed on automatic fire sprinkler systems. As the ULC Listed Canadian model, the OSY2A provides reliable supervisory monitoring to ensure sprinkler control valves remain in their required open position while immediately reporting unauthorized or accidental valve closure to the fire alarm control panel.

Constructed with a rugged NEMA 3R-rated die-cast metal enclosure, the OSY2A is suitable for both indoor and outdoor installations. Its adjustable-length actuator eliminates the need to cut the actuator shaft during installation, while the user-friendly mounting bracket accommodates most 1" through 12" OS&Y gate valves. The right-angle mounting design provides excellent clearance around valve components and can also be adapted for many side-bracket style pressure reducing valves.

The OSY2A features dual synchronized SPDT (Form C) contacts, allowing simultaneous activation of a fire alarm control panel and local notification appliance. A single-side conduit entrance simplifies wiring by eliminating the need for right-angle conduit fittings, while the cover tamper switch comes standard on the ULC model to provide additional security and code compliance. Designed in accordance with NFPA 13, NFPA 13D, NFPA 13R, and NFPA 72, the OSY2A is an ideal supervisory switch for commercial, industrial, institutional, and residential fire sprinkler systems throughout Canada.

Technical Specifications

• Manufacturer: System Sensor
• Model: OSY2A
• Product Type: Outside Screw & Yoke Valve Supervisory Switch
• Compatible Valve Sizes: 1"–12" OS&Y Gate Valves
• Contact Configuration: Two SPDT (Form C)
• Electrical Rating: 10A @ 125/250 VAC, 2.5A @ 6/12/24 VDC
• Maximum Stem Extension: 2.625" (6.7 cm)
• Operating Temperature: 32°F to 120°F (0°C to 49°C)
• Conduit Entrance: One ½" conduit opening
• Enclosure Rating: NEMA 3R
• Housing Material: Die-Cast Metal
• Wire Capacity: Up to 12 AWG
• Mounting Positions: Horizontal or Vertical (Actuator Down)
• Cover Tamper Switch: Standard
• Service Standards: NFPA 13, NFPA 13D, NFPA 13R & NFPA 72
• Approvals: ULC Listed, FM Approved, CSFM Approved, MEA Approved

Key Features

• ULC Listed Canadian model
• Monitors OS&Y (Outside Screw & Yoke) gate valves
• Compatible with 1"–12" OS&Y valves
• Rugged die-cast metal enclosure
• NEMA 3R rated for indoor and outdoor use
• Adjustable actuator eliminates shaft cutting
• User-friendly mounting bracket
• Right-angle design provides maximum valve clearance
• Single-side ½" conduit entrance
• Dual synchronized SPDT (Form C) contacts
• Simultaneously activates fire alarm panel and local bell
• Factory-installed cover tamper switch
• Tamper-resistant cover screws
• Accommodates up to 12 AWG wire
• Compatible with side-bracket pressure reducing valves
• ULC Listed
• FM Approved
• CSFM Approved
• MEA Approved

Applications

• Outside Screw & Yoke (OS&Y) Gate Valves
• Automatic Fire Sprinkler Systems
• Wet Pipe Fire Sprinkler Systems
• Dry Pipe Fire Sprinkler Systems
• Commercial Buildings
• Industrial Facilities
• Manufacturing Plants
• Warehouses
• Schools
• Hospitals
• High-Rise Buildings
• Institutional Facilities