CHLOROTECH Model C-731 is the advance technology Chlorinator designed to feed chlorine gas at a controlled rate. The flow rate of gas is maintained by constant positive acting spring-opposed diaphragm regulators.

Special Features

VACUUM REGULATORS : operate on diaphragm backed by silver spring vacuum regulator remotely mounted on manifold consisting of electrically operated heater for smooth flow of gas in cold climate; and as such, system remains under vacuum condition till dosing point.

DIFFERENTIAL REGULATOR : Maintains stedy flow rate and maintains constant vacuum beteween rate valve and flow meter.

RATE SETTING : Manual adjustment at the rate valve located on differential regulator body along with flow indicator.

CAPACITY : 10 Kg/hr to 200 Kg./Hr. or 10,000 P.P.D. (Pounds/Chlorine per 24 Hours)

RANGE : Within the basic 200 Kg./Hr. Capacity, the CHLOROTECH Chlorinator is capable of operating overflow ranges from 20 to 1,which are dependent upon the type of flow meters used.

WATER REQUIREMENT : The water supply flow rate and pressure requirement depend upon the maximum Chlorine capacity and back pressure at the outlet of the ejector. Back pressure includes the pipe functional losses between CHLOROTECH Chlorinator and the point of application, plus existing back pressure at the point of application.

SEMI AUTOMATIC OPERATION : The Chlorine regulator will permit gas flow only when the ejector furnishes sufficient vacuum. To operate the CHLOROTECH Chlorinator, it is necessary to initiate the ejector water flow. To stop CHLOROTECH Chlorinator, it is necessary to interrupt the water flow. This 'On/Off' operation makes CHLOROTECH Chlorinator semiautomatic. it can be accompanied by opening and closing of a solenoid valve in the injector water line.


The cabinet must be installed vertically and fastened to the floor. Trained service engineers are available to install and service CHLOROTECH equipment at extra cost.

Following Optional accessories available at extra cost

Booster Pump. (When water supply pressure is insufficient to operate the Chlorinator.).

Piping for chlorine solution drain and vent.

Chlorine solution diffuser. (Injection fitting for pressure pipe line applications.)

One or more of the following items may be needed for a particular installation.

Chlorine Scale (Weighing Machine).

Colorimetric Comparator (Test Set).

Check valve for Chlorine Solution Line.

Auto Dosing Valve

Electrical Drum Change Over

Mechanical Change Over

B.A. Sets

Emergency Repair Kit

Safety Shower

Leak Detector


Safety Clothing

Canister mask

Optional accessories available at extra cost.


As water under pressure flows through the ejector assembly, the vacuum is created in the ejector. This vacuum exists at reduced values back through the differential pressure regulator and the vacuum regulator are stacked to form a single unit - the Chlorine regulator.

The vacuum in the vacuum regulator moves the diaphragm which unseats the inlet valve, reducing the Chlorine gas from supply pressure to water column vacuum.

The Chlorine gas then passes through the flow meter, the manual rate valve and into differential pressure regulator. This regulator maintains a constant pressure drop across the rate valve .The gas flows from the regulator to the ejector where Chlorine mixes with water to form Chlorine solution, which is carried through the distribution system to the point of application.

Semiautomatic, or start/stop operation is accomplished by starting and stopping the water flow through the ejector by a solenoid valve or other means.

Ejector E-731Remote Vacuum Regulator