Evoqua V10K, Manual

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V10K V-NOTCH CHLORINATOR
WT.025.100.001.UA.IM.0614
15
EVOQUA W3T109612
c. In all cases, the tubing from the control unit should enter the injector from
above.
d. For one-inch fixed throat injectors, a rigid PVC pipe or Evoqua Water Tech-
nologies solution hose is required between the injector discharge and the
point of application. The pipe size depends on the size of the throat and
tailway used in the injector, the operating water pressure, and the length
of the solution line. Solution hose may be connected directly to the injector
tailway. If rigid PVC pipe is used, a piece of straight pipe at least eight inches
long should be coupled to the end of the injector tailway before any elbows,
tees, or Saunders valves are used. This is to prevent any flow disturbances
that could affect the hydraulic performance of tailway connections.
e. For the two-inch variable throat injectors, two-inch polyethylene pipe or
two-inch rigid PVC pipe is normally used. Solution hose may be connected
directly to the injector tailway. If rigid PVC pipe is used, a piece of straight
pipe at least 12 inches long should be coupled to the end of the injector
tailway before any elbows, tees, or Saunders valves are used. This is to
prevent any flow disturbances that could affect the hydraulic performance
of tailway. Discharge in an upward direction.
NOTE: For measuring the injector vacuum a 1/4” NPT connection is provided.
CAUTION: If a corporation cock is used, pull out stem to full length of chain
before closing valve.
To install the 3/4-inch fixed throat injector, proceed as follows:
Nozzle (with stamped number) and tailway (with stamped letter) are supplied
loose. Place the O-rings on both and apply Halocarbon grease.
When assembling nozzle and tailway into the injector body pay attention to
the flow direction. (Nozzle is placed first in the water flow path.)
NOTE: Do not cut off any portion of the tailway. To do so would interrupt flow
in the pressure-recovery zone and prevent normal performance.
NOTE: Do not overtighten the nozzle or tailway of the 3/4” injector. Thread
shoulder to stop on the body. For 1” injector, hand tightening of the retain-
ing nut is sufficient.
a. For main connection, install the injector tailway (beige color with letter
designation) directly into a 3/4-inch NPT tap in a main which is eight
inches or larger in size.
CAUTION: For proper dispersal of solution, the end of the tailway (beige)
must extend into main, but not more than 1/3 the diameter of the main.
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