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 L170/L175/L176 L177/L178 Series Compact, Alloy Level Switches   Printer Friendly Version
The L170, L175, L176, L177 and L178 compact level switches feature a Buna-N, Teflon® or stainless steel float for higher heat and pressure capabilities. Designed for low-cost, high volume use, these small size vertical switches are excellent for shallow and restricted tank spaces and are suitable for most harsh and corrosive environments. The +300 °F rated stainless steel model complies with FDA food contact regulations and is an ideal choice for food and beverage equipment and steam and fry cooking systems. Special high temperatue versions are available to withstand 500° F.
Operating
Principle		 Features Electrical
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A hermetically sealed reed switch is located in the switch stem at the desired measurement level. It is actuated by a magnet embedded in the float as it rises and falls with the liquid level.


  • UL approved
  • Broad heat and pressure capabilities
  • Broad media compatibility
  • Ideal for shallow tanks
  • FDA approved material
  • Selectable normally open or normally closed switch contacts

  • Maximum pressure:
    Buna-N 150 psig
    Stainless steel 600 psig
    Teflon 1000 psig
  • Maximum temperature:
    Buna-N +180° F
    Stainless steel +300° F
    Teflon +250° F

  • Standard switch: 50 VA, SPST
    max. current 400 mA (120 VAC) resistive
Specifications
Series Mounting Material SG Min Temp Max Temp Pressure Part #
L170 1/8'' NPT Brass/Buna .80 -40 F 180 F 150 psig L170-0101-2003
L170 1/8'' NPT SS/Buna .80 -40 F 180 F 150 psig L170-0108-2003
L175 1/8'' NPT Brass/SS .70 -40 F 300 F 150 psig L175-0101-0803
L175 1/8'' NPT SS/SS .70 -40 F 300 F 150 psig L175-0108-0803
L176 1/8'' NPT Brass/SS .90 -40 F 300 F 400 psig L176-0101-0803
L176 1/8'' NPT SS/SS .90 -40 F 300 F 400 psig L176-0108-0803
L177 1/8'' NPT Brass/SS .90 -40 F 300 F 600 psig L177-0101-0803
L177 1/8'' NPT SS/SS .90 -40 F 300 F 600 psig L177-0108-0803
L178 1/8'' NPT Brass/SS .85 -40 F 300 F 275 psig L178-0101-0803
L178 1/8'' NPT SS/SS .85 -40 F 300 F 275 psig L178-0108-0803

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