The general purpose float leak switch provides reliable leak detection in and around secondary containment sumps and tanks with a 1A relay output. The flat body Valox leak sensor is ideal for placement in hard to reach interstitial areas with limited space. In the event of a leak, the foam polypropylene float will rise to signal the presence of unwanted liquid in the containment vessel. The leak detection switch is typically mounted flat on the bottom of the sump floor or secondary containment tank wall.


  • Valox sensor body with PP float and Halar® jacketed cable for corrosive liquids
  • Flat, low profile sensor with minimal float rise for applications with limited space
  • Dry contact normally closed reed switch opens to signal the presence of liquid


P/N Description From
LH29-1001 Leak detection switch $250.00



Orientation: Horizontal

Contact type: (1) SPST reed

Contact state: Normally closed

Contact rating: 30 watts, 240 VAC (0.14 amps resistive), 120 VAC (0.28 amps resistive), 120 VDC (0.07 amps resistive), 24 VDC (0.28 amps resistive)

Contact output: NC (opens on rise)

Process temp.: F: -40° to 221°, C: -40° to 105°

Pressure: 50 psi (3.44 bar)

Float material: Foamed polypropylene

Body material: Valox 420

Pivot pin: Stainless steel

Wire type: 2 conductor, #22 AWG

Wire length: 10’ (3m)

Wire jacket mat.: Halar jacketed

Classification: General purpose

Compliance: CE

Approvals: UL