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Warrick Controls / Gem Sensors

Additional Information

Warrick® Conductivity level control systems rely on the liquid level sensing capability of probes (electrodes) that are housed inside fittings designed to accommodate one or more probes. The concept is simple: take advantage of a liquid’s conductive properties to complete a circuit and cause a control relay to actuate. These single- or multi-point sensors have no moving parts and the stainless steel corrosion-resistant electrodes can be cut to the desired length. Multiple probes per fitting allow control of several functions in less space with less expense for equipment and installation. To create a system select from numerous level controls, fittings and probe options. For OEM’s we also have the capability to custom configure liquid level control sensors and electrode fittings to meet your specific conductivity level control application requirements.
Gems Sensors & Controls manufactures two controls that serve as Limit Control components in the typical boiler application. The Warrick Series 26 and 26M control is a single level conductivity sensor designed for Low Water Fuel Cutoff applications. The Warrick DF product combines a single level conductivity sensor with a differential-level sensor circuit. The Warrick DF product can serve both a Low Water Fuel Cutoff and a Feed Water function all in one solution. Products are available in UL-353 listed and recognized versions.

In-stock orders eligible for small-pack shipments placed before 2:00 PM EST, Monday through Friday, will ship the same day. If ordered after 2:00PM EST, it will ship the following business day.

Items to be returned must be approved by Power Plus International, Inc. DBA Boiler USA, and may be subjected to a restocking fee

Notice: Due to the uncontrollable metal costs, all prices and delivery times are subject to change on a daily basis.

PPI™ and Power Plus International™, and related marks and logos displayed on the Site, are our trademarks and may not be used in any way without our prior express written permission. Nothing contained on the Site shall be construed as granting, by implication, estoppel or otherwise, any license or right to use any of our marks displayed on the Site without our prior express written permission. All other trademarks not owned by us that appear on this Site are the property of their respective owners.

*NOTE: The products described herein are not manufactured by Patterson-Kelley nor is Power Plus International, Inc. DBA Boiler USA in any way associated or affiliated with "PK", Patterson-Kelley, or Harsco Corporation.

Contact Us Directly:
Mailing Address:
  • Power Plus International, Inc. DBA Boiler USA
  • 143 McDonough Parkway
  • McDonough, GA 30253
Contact Us Directly:
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© 2026 Power Plus International, Inc. d/b/a Boiler USA, All Rights Reserved.
Mailing Address:
  • Power Plus International, Inc. DBA Boiler USA
  • 143 McDonough Parkway
  • McDonough, GA 30253
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