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IOM AddPak R01
8 Functional Operation
The Brodie Addpak injector block consists
of a 304 stainless steel block machined and
assembled with a positive displacement oval gear
meter, Asco solenoid, isolation and control needle
valves on the inlet and outlet, a strainer, and check
valve. Additionally, a quick coupler is included for
calibration. Compact design and low cost provide
the ideal solution for chemical additive injection
regarding petroleum terminals and pipelines.
Compared to other types of injectors, Brodie’s
AddPak Injector
Block minimizes leak points; All components are
built and assembled into the block.
The AddPak injector block is a slave injector,
typically controlled from a PLC, Terminal Automa-
tion System or Electronic Preset. If the application
requires a smart controller, please consult the
factory. The AddPak as standard does not include
the necesary electronics to pace the injector,
accumulate totals, or provide alarms.
Controller
The controller as referenced above will send an
AC voltage to the solenoid. This will energize the
coil and allow fl ow through the block. As fl ow
passes thru the block, the oval meter will send
pulses proportional to fl ow volume back to the
controller. When the preset volume is met, the
controller will terminate the AC power to the sole-
noid, the valve will close, and fl ow will cease. This
cycle is repeated every time the controller sends
AC voltage to the solenoid. Standard AC voltage
is 115 VAC with options for 230 VAC or 24VDC
solenoids available. The User should select a
controller with alarms for conditions with excess
additive or no additive fl ow. The controller should
discontinue loading until the problem is resolved
and the alarm has been reset. The user can consult
Brodie for assistance in selecting the appropriate
controller.
9 Mounting
The AddPak Injection block can be mounted in any
orientation provided the oval gears remain in a
horizontal position. The inlet and outlet connec-
tions can be vertical, horizontal, or inclined. To
ensure the gears are in a horizontal position, the
sesnor and solenoid should be facing the installer,
rather than facing up or down.
