Trerice 91000 Series Self-Operating Temperature Regulators are the #1 choice of original equipment manufacturers, mechanical contractors and industrial process engineers. These regulators are ideal for the temperature control of industrial equipment, tanks and process streams. The self-operating design provides reliable performance under the most extreme conditions without the need for an external power source.
The Spence Series 2000 self-actuated temperature regulator is a simple mechanical device that requires no external energy source for operation. The actuation forces (contained within the thermal system) are only dependent upon the process temperature and required control point.