POTTER VSR-2.5

Product Overview

The VSR-2.5 is a vane-type waterflow switch designed for use on wet sprinkler systems. It is UL, CUL, CSFM Listed, FM Approved, and LPCB Approved, supporting installation on steel pipe (Schedules 10–40) in sizes ranging from 2" to 8". This model functions as a primary waterflow detector or as a sectional detector for larger systems. It incorporates dual SPDT snap-action switches and an adjustable pneumatic retard to prevent false alarms, activating when a sustained flow of 10 GPM (38 LPM) or more is detected.
 This version is specifically configured for 2.5" (DN65) pipes.

Key Features

• Model Details
   Model Number: VSR-2.5
   Item Number: 1144425
   
• Pipe Compatibility & Dimensions
   • Nominal pipe size: 2.5 in (DN65)
   • Pipe O.D.: 3 in (76.1 mm)
   • Non-corrosive sleeve pre-installed in the saddle
   
• Certifications & Compliance
   • UL, CUL, CSFM Listed; FM and LPCB Approved
   • Suitable for systems designed under NFPA-13, NFPA-13D, NFPA-13R, and NFPA-72
   
• Performance Specifications
   • Service pressure: 450 PSI (31 BAR)
   • Flow sensitivity: 4–10 GPM (15–38 LPM)
   • Maximum surge: 18 FPS (5.5 m/s)
   • Adjustable pneumatic retard for preventing nuisance alarms
   
• Switch & Electrical Data
   • Two SPDT (Form C) switches
   • Contact ratings:
   – 10 A at 125/250 VAC
   – 2 A at 30 VDC resistive
   – Minimum: 10 mA at 24 VDC
   • Two ½" conduit knockouts with isolated switch compartments for mixed voltages
   
• Environmental Details
   • NEMA 4 / IP54 enclosure suitable for indoor or outdoor installation
   • Operating temperature: 40°F to 120°F (4.5°C to 49°C)