Wax elements

Wax elementsWax elements

Wax elements are at the heart of all our thermostats and thermostat inserts. These maintenance-free, durable elements have proved their worth in millions of applications, and can be tailor-made to your individual specifications. At Behr Thermot-tronik, we manufacture a wide range of variants with actuating forces of between 30 N and 2,500 N, small or large displacements, and for a large number of regulation ranges within a temperature span of -20 °C to +130 °C.

A straightforward principle
Warming the wax element increases the volume of the wax, thereby moving the piston. If the temperature drops, the volume is reduced, and a spring forces the piston back to the starting position.