Starting at $194.00
Minimum Order Quantity of 5 Items.
  • Usually ships in 2-3 weeks



  • Ideal for Large or Small Tanks
  • Mounts Outside the Tank
  • Compact Aluminum Housing
  • Stainless Steel or Buna-N Float
  • Inline Ports: 1/4"-18 NPT inlet; 1/8"-27 NPT outlet
  • Switch: SPST, 20 VA, selectable N.O. or N.C. by inverting float on unit stem
  • U.L. Recognized and CSA Listed
  • Maximum Pressure
    • Stainless Steel Float: 600 PSI
    • Buna-N Float: 250 PSI
  • Operating Temperature
    • Stainless Steel Float: -40 to 300°F
    • Buna-N Float: -40 to 250°F (oil); to 180°F (water)
  • Electrical Termination: No. 22 AWG, 24˝, Teflon Lead Wires


The Gems LS-159000 series is a low-cost, non-intrusive inline level switch for applications in which mounting the switch inside the tank is impractical or impossible. Ideal for large or small tanks, the LS-159000 mounts completely outside the tank, at the level actuation point.

The LS-159000 features ruggedly reliable aluminum construction with Buna-N or stainless steel floats. Offering broad heat and pressure capabilities, the LS-159000 is rated for temperatures up to 300°F and pressures to 600 PSI (depending upon float material). An SPST switch (20 VA) is utilized which is selectable N.O. or N.C. by inverting the float on the unit stem. The LS-159000 is equipped with 24" polymeric lead wires.