1-9. EQUIPMENT DATA. Refer to Table 1-1 for performance data on hypochlorination unit
SHIPPING WEIGHT 175 lbs
MAXIMUM PRESSURE 125 psi.
MAXIMUM FLOW RATE 350 gpm.
MAXIMUM OPERATING TEMPERATURE 140° F (60°C).
MINIMUM OPERATING TEMPERATURE 32° F (0°C).
SECTION III. PRINCIPLES OF OPERATION.
1-10. THEORY OF OPERATION. The hypochlorination unit chlorinates water and is used in conjunction with water
storage and distribution systems It consists of several simple parts combined into one unit, and may be used in the
system before or after storage tanks. Primary component is the proportioning pump of which upper housing and
pumphead assemblies are shown. Rotary motion of the flow meter (not shown) is used to turn cam (I) Cam pushes and
releases valve arm (2) When valve arm (2) is pushed completely by cam, it pushes on R-valve (3) and shuts it. After R-
valve (3) is shut, the valve arm (2) then pushes on the bal-valve (4) to open it. When the bal-valve (4) is open, water
from the lower housing assembly flows through the hole (5) and pressurizes upper housing assembly. This pressurized
water passes through a pipe to the pumphead assembly where it pushes on the water side diaphragm (6). The pressure
overcomes spring pressure pushing the chemical diaphragm (7) which pumps calcium hypochlorite out the discharge
valve (8). When the cam (1) releases valve arm (2), spring pressure allows bal-valve (4) to shut and R-valve (3) to
open. The R-valve (3) discharges water to environment. When water pressure is no longer on water side diaphragm (6),
spring pressure pushes diaphragm to original position and pulls chemical side diaphragm (7) away from pump housing
causing calcium hypochlorite to be drawn through suction valve (9). The cam (1) continues to turn and repeat this action
as long as there is flow through the water meter.