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Water Detection Probe System
Full Manufacturer Warranty

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Crown Products 4SG Water Detection Probe System

Weather Proof Enclosure, fits Existing Sight Glass Connection for Facet VF21/VF22 Type Housings

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Model # Description Price Qty
WP-012-4SG Weather Proof Enclosure, fits Existing Sight Glass Connection for Facet VF21/VF22 Type Housings, 12V DC Relay $1,188.20
WP-013-4SG Weather Proof Enclosure, fits Existing Sight Glass Connection for Facet VF21/VF22 Type Housings, 12V AC Relay $1,188.20
WP-024-4SG Weather Proof Enclosure, fits Existing Sight Glass Connection for Facet VF21/VF22 Type Housings, 24V DC Relay $1,188.20
WP-025-4SG Weather Proof Enclosure, fits Existing Sight Glass Connection for Facet VF21/VF22 Type Housings, 24V AC Relay $1,188.20
WP-120-4SG Weather Proof Enclosure, fits Existing Sight Glass Connection for Facet VF21/VF22 Type Housings, 120V AC Relay $1,319.50
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Crown Products - 4SG - Water Detection Probe System

SG Water Detection Probe Systems detect the presence of water in a filter-separator sump by utilizing a conductivity probe attached to the vessel and an intrinsically safe relay to control fuel flow by stopping a pump or closing a valve.


SG Style probes are designed to install directly into the sight glass connection of Facet’s VF-21/22 housings. Just remove the snap ring and sight glass from the housing, then insert the SG Series probe assembly and reinstall the snap ring. No vessel modifications are required.


Crown SG Water Detection Probe Systems Feature:

  • All stainless steel and aluminum metal parts
  • Buna and Viton Seals
  • Installs in Sight Glass Connection
  • Components rated for 150 PSI pressure
  • Available with 12 Volt or 24 Volt AC or DC Relays or 120 Volt AC Relay
  • Available with Weatherproof or Explosion Proof Relay Enclosures