Armstrong International D24659 Thermostatic Operator Freon Built with 1/8" female NPT

Built with 1/8" female NPT connections

The 63K46 is an L70-28F sensor

and liquid temperature sensing via optional immersion wells

the MARS 44513 provides the overhead required for reliable 24-volt control circuits

Armstrong International D24659 Thermostatic Operator Freon Built with 1/8" female NPTThe Armstrong International D24659 (also identified by part number 6005639) is a heavy duty LV 4W Remote Wall Mounted Thermostatic Operator designed for precise temperature regulation in hydronic heating systems. This non electric thermostatic head features a remote wall mounted sensor and a liquid filled element, ensuring reliable valve actuation based on ambient room conditions rather than local pipe temperature. Built for compatibility with