Spartan Compact Thermoelectric Actuator Direct Acting 2 Wire Spring Return N/O

Spartan Compact Thermoelectric Actuator Direct Acting 2 Wire Spring Return N/O. Spartan's thermoelectric actuators utilize a highly refined wax filled element with piston/stem and patented packless elastomer seal. They are silent, extremely compact, inherently fail safe and can operate on hot and cold water, and low pressure steam to 15PSI. A PTC (positive-temperature-coefficient) semi-conductive disc is both temperature control and heat source, inherently controlling at 90ºC (194ºF).The wax is chemically refined to melt at 70ºC (158ºF). The element expands in direct proportion to the amount of wax melted, driving the stem through its travel to open the valve. No other travel or thermostatic switches are required. Life expectancy is therefore in multiple decades and unconditionally guaranteed by Spartan Peripheral Devices for 5 years.