VSRS Vane Type Waterflow Alarm Switch with Retard (for small pipe)
Usage: Listed plastic, copper and schedule 40 iron pipe. Fits pipe sizes - 1", 1 1/4", 1 1/2") and 2"

UL, CUL and CSFM Listed, FM Approved, LPCB Approved, For CE Marked (EN12259-5) / VdS Approved model use VSR-EU
Service Pressure: 450 PSI (31 BAR) - UL
Flow Sensitivity Range for Signal: 4-10 GPM (15-38 LPM) - UL
Maximum Surge: 18 FPS (5.5 m/s)
Cross Reference: System Sensor WFDTH