Injector Cap, Screen, Injector Plug, and Injector
The screen, injector, and/or injector plug(s) are installed under the injector cap in an easy-to-access location on top
of the valve. The injector cap contains four slots so no water accumulates in the cap. The injector cap is designed to
be hand tightened.
Under the injector cap there is an easy-to-clean, removable screen to prevent fouling of the injector. There are two
holes under the injector cap labeled DN and UP. The holes will be filled with a plug or an injector.
The plug (P/N: LC-V3010-1Z) prevents water from traveling a certain pathway. The injector lets water pass through
thepathway.Theself-priminginjectorincreasesthevelocityofthewater,creatingazoneofnegativepressurethat
draws in the concentrated liquid regenerant, such as sodium chloride (brine), potassium permanganate, etc. The
regenerant blends with the stream of water, which passes through the media to regenerate the bed.
The injector provides a consistent regenerant/water mixture ratio over the entire operating pressure range of the
control valve. The injector provides good performance in a variety of applications, which may involve elevated drain
lines and long regenerant draw lengths. Injectors are chosen by knowing the type, amount, and regenerant flow rate
for a particular type of media. Guidelines can be found in the media manufacturer’s literature. The color coded
injectors give different regenerant draw, slow rinse, and total flow rates over the pressure range. See Table 3 (below)
for color codings, and injector graphs (pages 42 to 45) for total, slow rinse, and draw flow rates.
The control valve has been manufactured to be one of the following:
1. Regeneration downflow 1 & 1.25 inch Tech control valve (for softeners or regenerating filters)
— DN location contains injector, UP location contains plug
2. Regeneration upflow 1 & 1.25 inch Tech control valve (for softeners—not avaialble for Tech-TC Series valves)
— UP location contains injector, other hole contains plug
3. No regenerant 1 & 1.25 inch Tech control valve (for non-regenerating filters)
— DN location contains plug, UP location contains plug, refill elbow replaced by refill port plug (P/N: LC-V3195-01)
NOTE: It is not recommended to convert valves from upflow to downflow, or vice versa, in the field. Separate areas
in the control valve are used to supply water to the injector for upflow or downflow valves.
Table 3
Injector Order Information
Page 7
* Actualtanksizeusedmayvarydependingonthedesignandapplicationofthesystem.Tankdiameterisanapproximation for the following:
A. Downflow softener using standard mesh synthetic cation exchange media regenerating with sodium chloride.
B. Upflow softener using standard mesh synthetic cation exchange media regenerating with sodium chloride, an inlet water pressure of 30 to 50 psi (2.1 to
3.4 bar), and water temperature of 60°F (15.6°C) or higher. Higher pressures or lower temperatures would need smaller injectors to avoid lifting the bed.
** Not applicable for Tech-TC control valves
Injector Part Number Injector Color
Typical Tank Diameter *
Down Up **
LC-V3010-1A Black 6 inch 8 inch
LC-V3010-1B Brown 7 inch 9 inch
LC-V3010-1C Violet 8 inch 10 inch
LC-V3010-1D Red 9 inch 12 inch
LC-V3010-1E White 10 inch 13 inch
LC-V3010-1F Blue 12 inch 14 inch
LC-V3010-1G Yellow 13 inch 16 inch
LC-V3010-1H Green 14 inch 18 inch
LC-V3010-1I Orange 16 inch 22 inch
LC-V3010-1J Light Blue 18 inch —
LC-V3010-1K Light Green 22 inch —
