Barksdale “Bilge Guard” Level Switch

Barksdale “Bilge Guard” Level Switch from Techniquip Ltd

Barksdale Bilge Guard is a rugged, stainless steel level switch designed specifically for marine bilge monitoring. It features a hermetically sealed reed switch and a built-in slosh shield to prevent false triggers in turbulent water.
Available Models:-
The series is primarily divided into two main models based on the inclusion of a manual test feature:
  • Barksdale UNS-VA/SB5 Bilge Guard

    : This version includes a test function that allows for manual verification of the switch operation.

  • Barksdale UNS-VA/SB4 Bilge Guard

    : This is the standard version designed for bilge monitoring without the test function.

Key Specification:-

According to official Barksdale datasheets and technical retailers like Techniquip the Bilge Guard series typically adheres to the following specifications:
  • Materials: Constructed with a 316 stainless steel stem and bracket, a polyethylene (PE) float, and a halogen-free polymer cable.
  • Switch Rating: Rated for a maximum of 230V AC/DC at 2.0 Amps (40 VA/W).
  • Contact Type: Standard SPST switch, typically shipped as Normally Open (NO), but can be converted to Normally Closed (NC) by rotating the float 180°.
  • Operating Limits: Supports a maximum pressure of 3 bar (at 20°C) and a temperature range from -20°C to +70°C.
  • Ingress Protection: Rated at IP67/IP68, making it suitable for continuous immersion in marine environments.
Common Product Variants
Depending on the required cable length and testing options, specific part numbers include:
  • 0111-510 UNS-VA/SB5 with 2-metre polymer cable and test option. Available Ex-Stock from Techniquip Ltd
  • 0111-652UNS-VA/SB5 with 5-metre polymer cable and test option. Available Ex-Stock from Techniquip Ltd
  • 0111-534 UNS-VA/SB5 with 15-metre polymer cable and test option. Available Ex-Stock from Techniquip Ltd
  • 0111-509 UNS-VA/SB4 with 2-metre polymer cable, no test option.
  • 0111-660 UNS-VA/SB4 with 10-metre polymer cable, no test option.
Applications and Approvals

These switches are primarily used in shipbuilding, yacht building, and sewage works. They carry various maritime approvals, including DNV, GL, and BV (Bureau Veritas), with ATEX versions available on request for hazardous environments.