Honeywell V8043F1036 Motorized Zone Valve With Terminal Board Connector, 24 Volt Rubbing Bricks but a general guideline is

but a general guideline is approximately 2/3 from the top of the drapery

never seizes

System rated for flue temperatures up to 570 degrees

Maximum rust protection

Honeywell V8043F1036 Motorized Zone Valve With Terminal Board Connector, 24 Volt Rubbing Bricks but a general guideline isThese valves consist of a motorized actuator and valve assembly for controlling the flow of hot water to a heat exchanger such as a radiator, convector, finned baseboard radiator, or infloor radiant coil for space temperature control. The V8043 5000 series valves provide two position, straight through control of supply water at up to 300 psi operating pressure. Quick Fit actuator provides easy snap on and off connection to the valve assembly.