Pulsafeeder Polymer Makedown Automatic Systems EN - Manual (Page 9)

Automatic Polymer Makedown Systems
Installation, Operation and Maintenance Manual
72-910-APMDS-E Rev A
Skid Layout and Components Page 9
The injection point in the served process or system must be higher than the top of the Solution Supply
Tank to prohibit gravity feeding unless suitable backpressure is always present at the injection point.
In applications where the injection point is below the Solution Supply Tank (example – injection
into a well) or where the injection point may be at reduced pressure (example – injection into the
suction side of a pump), installation of an anti-siphon valve in the process feed line will prevent gravity
feeding.
Note: For some applications where air or gas may form in the suction line, this may interrupt flow.
In this case, it may be desirable to add a “Proof of Flow” device on the process side to alert if chemical
injection flow is somehow interrupted. Contact your Pulsafeeder distributor.