Ultra-reliable high/low water boiler alarm switches now available

Oct. 4, 2017

Clark-Reliance Corporation has announced a new family of level switches for boiler and tank applications. The new Reliance Levalarm Gold level switches provide the ultimate in secure, reliable operation for critical high or low water alarms or for fuel cutouts.

The switch design represents a major step forward in reliability, employing a positive interlocking magnet operation proven for over 28 years in Clark-Reliance’s Jerguson level switches. The switches’ repelling magnet design allows them to be completely unaffected by heat, vibration, or loss of electrical power, a first for float-type switches for this application.

The new Reliance Levalarm Gold level switches are available in three models for pressure up to 1,000 psi (69 Bar) MAWP. Their “drop-in” design requires no adjustments to commission, a benefit over previous level switches which required tedious on-site adjustments prior to going on-line. All models are approved by the following agencies: CSA, FM (7710 Standard), and UL (353 Standard).

The new switches are part of a broad offering of Reliance level switches for low or high water level on boiler and tank use, including probe-type level switches and a retrofit kit to convert old float switch designs to probe operation.

For more information, visit