Zone valves are used to automatically shut-off the flow, redirect or
modulate hot and chilled water in hydronic heating and air
conditioning systems.
The high flow and high close-off performance characteristics of
these zone valves, combined with the compact size, makes them
particularly suitable to fit inside baseboard or directly in fan coils
units.
The 6442 and 6443 series motor drives for 40 seconds. Power is
then dropped by an internal switch. Power is required to drive in both
directions. These valves are used in all types of systems because of
the following characteristics:
- Zero leakage across the valve
- Quick opening and closing valve operation
- Operates at very high differential pressures
- Loss of power stays in last position (open, closed or mid-stroke)
- Low pressure drop through the valve
- Union connections for simple installation and removal