The Honeywell Aquastat Controller is an immersion-type device for limiting or regulating the temperature of liquids in boilers， storage tanks and other applications where temperature control is required. It has an external adjustment screw that permits easy setting and an immersion element that can be inserted horizontally or vertically. Direct or well immersion of the sensing element.

Totally enclosed microswitch snap-action switches operate on temperature rise to set-point

Visible control-point scale and external adjustment screw permit easy setting

Horizontal or vertical insertion of the sensing element

Direct or well immersion of the sensing element

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