Series 15 Side Mounted Float Level Switches

If you need a simple, reliable approach for the control of liquids at a low, low price, you’ve come to right place! At Compac Engineering Inc. we are living proof that you don’t have to spend a lot of money to get a great-quality liquid level switch. Our collection of Series 15 liquid level switches are loaded with the features of switches that cost 100-500% more – and they’re built to last, a great combination for any OEM component. +/- Read More

How Does a Liquid Level Switch Work?

Also known as a liquid level float switch or a liquid level control switch, a liquid level switch is constructed from two injection molded sections, a housing section containing a sealed-in glass magnetic switch, and a float section containing a permanent magnet. Sections are hinged together by an integral clevis mechanism. The float then moves in response to changes in liquid level, thereby transporting the magnet into proximity of the switch. Move the float toward the switch housing and it clicks on. Move the float away and it clicks off. Simple, right?

Compac’s 15 series liquid level switches have a centerline symmetrical design so they can be easily installed (or removed) through a bulkhead hole (or a threaded boss) from the outside-in or from the inside-out. Units are equipped with nut and 0-ring to accommodate inside-out mounting.

We also offer a variety of ERECTA SWITCH components to extend your installation options. Low cost, weather resistant wiring receptacles provide the place to connect wires. Liquid tight connectors, thread adapters, beeper alarms, and control relay housings (control heads) make up the Series 15 ERECTA SWITCH product group. Used alone or with ERECTA SWITCH components, 15s are the efficient answer for just about any OEM side mount requirement.


  • Unbeatable cost/function ratio
  • Precision components throughout
  • Manufactured under “smart system” controls
  • Reliable, “sealed-in glass” contacts
  • Very small size
  • Switches small solenoid valves, lamps and relays
  • Recognized under UL component recognition program

Need help? Compac is dedicated to providing our customers with all the information they need to make an informed decision when ordering. Call us today at 800-828-9044 and we can assist you with all your liquid level switch needs.

General Specifications

* A number in brackets indicates the number of products in that specific category.