while the take-apart design allows for internal component replacement

Does this kit include the actuator itself

What makes this suitable for smoke control

a manufacturer-approved LP conversion kit (often sold separately) must be used to ensure correct orifice sizing and regulator spring tension

The valve operates on a standard 24 VAC ignition system

Johnson Controls A28KA-1 Temperature Control 30067439-890 while the take-apart design allowsJohnson Controls A28KA 1 Industrial Thermostat, Temperature Control, 120 208 240 Vac, Two Stage, Two SPDT Switches, 0 150 Degree Temperature Setpoint Range, 5 Degree Differential Each Stage, 3 Degree Fixed Differential Between Stages, . 29" x2 1 2 Sensing Bulb, 10' Capillary Length, Knob Range Adjustment, Watertight and Dusttight A28KA 1 is identical to A28KA 1C