The Series 2000CV Chloromatic™ control valve operates on sonic velocity, no differential pressure regulator is required. Valve characteristics are provided to directly accept a signal proportional to flow, from a residual controller or a PLC. Automatic control eliminates the need for continuous operator monitoring and manual adjustment of the gas feed rate with changes in flow, especially where chemical discharge levels are regulated. And since manual system feed rates are based on peak flows, automatic feed reduces gas consumption.
Standard maximum capacities are: (200 and 500 g/h; 1, 2, 4, 6, 10, 20, 40 and 60 kg/h) of Chlorine gas.
All automatic chlorinators utilize the Chloromatic™ valve. This unit has two major components, the control valve and the electric operator. The control valve consists of a housing, a shaped precision plug and a corrosion resistant plastic seat. The plug is positioned with respect to the seat by the valve operator to provide precise control of chlorine feed rates in accordance with the electric input signal to the valve operator. The control valve operator consists of a solid state electronic circuit, a stepping motor, and a mechanism to position the control valve plug. The single input valve operator can be adapted to respond to any one of the following signals: 4 – 20 mAdc; 1 – 5, 0 – 4, or 0 – 5 Vdc (normally from a flow transmitter). A dosage adjustment knob is provided to set the chlorine to water ratio to compensate for differences in chlorine demand. The dosage adjustment is combined with an on-off switch for power shut-off to the motor. With power to the motor shut off, the valve can be operated manually by means of a knob connected to the motor drive shaft. Figure 1