Supervisory limit switch HOS

ULsafetyrugged

Product Overview
The Hants HOS UL supervisory switch is engineered for OS&Y (Outside Stem & Yoke) gate valves to provide reliable valve position monitoring, tamper detection and interface with Fire Alarm Control Panels (FACP). Designed to support NFPA 13 and NFPA 72 compliance, the device helps prevent accidental or intentional water supply cutoff during fire events.

Features

• UL-rated supervisory switch specifically for OS&Y gate valves
• Accurate valve position monitoring to report fully open/closed status
• Tamper detection to signal unauthorized valve manipulation
• Direct integration with FACP for alarm and monitoring circuits
• Robust design to minimize false trips and prevent water supply interruption during fire conditions

Applications

• Supervision of OS&Y gate valves in fire protection and sprinkler systems
• Installations requiring compliance with NFPA 13 and NFPA 72

Certifications

• UL supervisory rating for fire protection applications
• Meets NFPA 13 and NFPA 72 system requirements

Technical specifications

• Model: Hants HOS
• Compatible valve type: OS&Y gate valves
• Main functions: valve position monitoring, tamper detection, FACP integration
• Primary purpose: prevent accidental or intentional water supply cutoff during a fire
• Standards: UL supervisory rating; designed for NFPA 13 and NFPA 72 compliance