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LF31 - HVAC Pressure Switch

The MAMCO/ LEFOO LF31 series switch was designed for use in the HVAC industry where safety and reliability are essential. Despite the design intent, this series has proven to be a viable solution for many pneumatic applications as well. Available in vacuum, differential, and pressure models with fine silver or gold cross bar contacts, the LF31 is capable of detecting very low pressures. Factory calibrated units maintain set point tolerances of +/- 10% over a temperature range of -40 degrees F to 185 F due to its molded silicone diaphragm and the stability of its glass filled polyester body. MAMCO/LEFOO offers multiple electrical terminations and mounting options as well as bleed holes and three different size orifices. This switch series is not only the leading product in the market offering the highest quality and reliability but is also the most economical.

LF31 Vacuum Switch is in Stock and Ready to Ship

LF31 Vacuum Switch: Benefits & Featureslf31.jpeg

  • Capable of detecting very low pressures
  • Factory calibrated to maintain tolerances of +/- 10% over a temperature range of -40°F to 185°F
  • Multiple electrical terminations and mounting options available

Enjoy the MAMCO Edge:  LF31 Vacuum Switch

  • Outstanding Service from Highly Trained and Experienced Personnel
  • Expedient Delivery: Get your products on time and within budget
  • Engineering Expertise: Custom solutions to meet your specifications and critical requirements
  • Advanced Design Software
  • We invest in R&D to discover versatile, cost-effective solutions for our customers
  • MAMCO is ISO-9001-2015 certified




What Our Clients are Saying...

  • Custom Electronics

      MAMCO provides us with the quality and consistency that we seek in order to continue providing excellence to our own customers. MAMCO has always been responsive to the requirements of our overmolding projects, and very pleasant to work with.  

    Michael Shulte, Custom Electronics

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