using the expansion of material from its solid state to its liquid state. Flat Diaphragm Wax Actuators Caltherm's flat diaphragm elements, which are known for extreme accuracy... to their initial position. Squeeze Push Actuators Similarities between the flat diaphragm and squeeze push elements include the use of temperature sensitive expansion material...

. Caltherm designs its thermal actuators using one of two main approaches flat diaphragm or squeeze-push to generate piston movement when exposed to heat. Flat Diaphragm Element The... cycles. The diagram below illustrates how the flat diaphragm elements functions. When exposed to heat, the expansion material, enclosed in the cup , expands and pushes against... external spring (not pictured) ensures the return of the piston when cooling down. Squeeze-push element Squeeze-push technology is used when additional stroke is required...

heating element as a supplemental heat source which is activated by applying an appropriate voltage and current. The resultant heat causes the expansion material to change state...