Product Overview

 The OSYSU-2-CRH is a corrosion-resistant supervisory switch engineered to monitor the open position of OS&Y (Outside Screw and Yoke) gate valves. Designed for reliability in demanding environments, it features a durable die-cast enclosure with tamper-resistant hardware. The unit is equipped with two sets of SPDT (Form C) contacts and mounts easily to most OS&Y valves ranging from 2" to 12" (and some as small as ½"). A three-position switch assembly provides accurate detection of valve closure and tampering. Visual indicators, a knurled mounting bracket to prevent slippage, and fine-adjustment capabilities ensure fast and secure installation. Suitable for indoor or outdoor use, the OSYSU-2-CRH meets NEMA 4X and 6P requirements and supports NFPA 13, 13D, 13R, and 72 applications.

Key Features

• Two sets of SPDT (Form C) contacts
• Three-position switch detects valve closure and tampering
• Operating temperature: -40°F to 140°F (-40°C to 60°C)
• NEMA 4X (IP65) and NEMA 6P (IP67) rated enclosure
• Visual switch indicators
• Two conduit knockouts for ½" fittings
• Adjustable-length trip rod
• Accommodates up to 12 AWG wiring
• Knurled mounting bracket prevents slipping
• Fine-adjustment mechanism for quick installation
• Die-cast red cover and black base with corrosion-resistant finishes
• Tamper-resistant cover screws; optional tamper switch available
• Contact ratings:
  • 10 A at 125/250 VAC
  • 2 A at 30 VDC resistive
  • 10 mA minimum at 24 VDC
• Weight: 1.6 lbs (0.73 kg)
• Suitable for indoor/outdoor service; supports NFPA 13, 13D, 13R, 72