Tag: Fire Protection Item

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  VSR (EU) Vane Type Waterflow Alarm Switch with Retard

  Size Range: DN50 – DN200 (2″ – 8″)
  Working pressure: UL and FM 31 Bar (450 psi); VdS and LPCB 16 bar (230 psi)
  Flow Sensitivity Range for signal: 15-38 LPM (4-10 GPM) – UL; 30-57 LPM (8-15 GPM) – VdS; No Signal below 1 LPM (2.6 GPM) – VdS
  Pressure Loss: 0.2 bar (3 psi) max. at 5 m/s (DN50-100); 0.07 bar (1 psi) max. at 5 m/s (DN150-200)
  Maximum Surge: 5.5 m/s (18 FPS)
  Approvals: FM, VdS, LPCB and CE Approved, UL Listed

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