Chlorine Control valve
Purpose of full-vacuum chlorinators Chlorine gas is
important for the disinfection of potable and swimming
pool water but also represents a source of danger as
far as handling, transportation
and storage are concerned. Therefore the vacuum principle
has been used in chlorination installations
already for decades. According to this principle, the
pressure of the chlorine gas is reduced to vacuum,
and only then, if the vacuum is sufficient, will chlorine
gas flow to the metering point.
The main safety aspect is that the escape of chlorine
gas is actually avoided. Even in the case of a line
rupture chlorine gas cannot escape but only ambient
air can be primed.
Full-vacuum chlorinator C 2212
The full-vacuum chlorinator used as pressure reducing
valve is of central importance for the safety
in vacuum installations. For this reason the C 2212
version has been designed in accordance with the
highest safety standards. Its compact design is most
suitable for installations of simple structure.
The C 2212 combines several functions in one housing:
(all numbers in brackets refer to the schematic diagram
on the page MB 2 04 12 / 3).
a) Vacuum regulation
In the initial position the ball (1) rests on the valve
seat (2). It is pressed onto the seat by the locking
spring (3) and the chlorine cylinder pressure and closes
the system. After switching on the ejector
(water-jet pump), a vacuum is generated. Thevacuum applies
a force to the working diaphragm
(7) of the full-vacuum chlorinator, which is directed
to the right. This force is transferred to the valve
(1) by the valve rod (8) so that chlorine gas enters
the vacuum system. If the vacuum breaks down, the
valve ball falls back immediately onto the valve seat
and stops the chlorine gas supply.
b) Flow indication and adjustment A flow meter is mounted
on the front side of the C 2212 full-vacuum chlorinator.
The positon of the float element (11) indicates the
flow directly at the scale on the gauge tube. Gauge
tubes with maximum rates between 25...4000 g Cl2/h are