HCY & HCNMOTORIZED ZONE VALVES HCY & HCN

The HCY & HCN series motorized ball valves are often used as a zone valve. Ball valves control the ow by means of a rotating ball having a bore. By rotating the ball a quarter around its axis, the valve will open or close. Electric ball valves are controlled with the aid of an electric motor. They are also called actuated ball valves. Electric ball valves distinguish themselves by a large orifice, so there is a low resistance to the owing water. The actuator includes an energy efficient electric motor and gear for rotating the ball gradually, so no water hammer occurs. The actuator has two limit switches to stop the motor automatically when the valve is fully opened or closed. The power consumption of electric ball valves is very low, as power is only consumed during opening or closing. The valve can have two or three connection ports (2-way or 3-way). A 2-way valve can be used to (partially) close or open a pipe. Valves with internal relay can be completely open or closed (one control wire), actuators with 3-point control (2 control wires) can also be par- tially opened. A 3-way valve has three connection ports. This allows to switch between different circuits. Think of (solar) boilers or heat exchangers. The three-way balls have a T-shaped bore. This makes different applications possible (2 or 3 opened ports).