The Injection Fitting (check valve) prevents backflow from a treated line.
Black fittings on left are Polypropylene.
White fittings on right are PVDF (Kynar®).
Black Polypropylene Injection
Fittings are provided as standard on all Chem-Feed (diaphragm) and FlexFlo (peristaltic) injector pump.
(Excluding the A-100, A-1600, C-1200).
The Injection Fitting is designed to install
directly into either 1/4" or 1/2" female pipe threads (NPT).
You can trim the injection point (nose) if
needed. See image to the right.
The nose section is designed to inject the
chemical away from the wall of your pipe.
We do offer another Injector
Fitting for smaller pipe sizes (such as 1/2" and 1/4"). This fitting does not have the same
length at the injection point (nose). See images to the right.
Install the Injection Fitting directly into a
tee fitting. The solution must inject directly into the flow stream.
Use Teflon® thread sealing tape on the
pipe threads of the Injection Fitting.
This illustration shows the
Injection Fitting installed in a tee fitting using the 1/2" threads.
You can install the Injection Fitting
directly into your pipe.
Drill the correct size hole and then tap
the hole for 1/4" or 1/2" NPT.
Use Teflon® thread sealing tape on the
pipe threads of the Injection Fitting.
This illustration shows the
Injection Fitting installed directly into pipe using the 1/4" threads.
Exploded View (ball check valve)
Cut an appropriate length of
discharge tubing (opaque tube). Push one side of the tubing onto the compression barb of the Injection Fitting. Use
the tube nut to secure the tube. Hand tighten only.
The exploded view drawing above shows
the "tube nut" on the far right hand side. The part to the left side of the "tube nut" is
the "compression fitting" that the tube must fit onto.
Tip:
Standard Injection Fittings are made of Polypropylene. PVDF Injection Fittings are recommended for use with aggressive chemicals which are not compatible with Polypropylene. PVDF Injection Fittings should be considered for use with chlorine at elevated temperatures.
Note:
All diagrams are strictly for guideline purposes only. Always consult an expert before installing the Chem-Feed pump on specialized systems. The Chem-Feed should be serviced by qualified persons only.
Caution:
Always wear protective clothing, face shield, safety glasses and gloves when working on or near your metering pump. Additional precautions should be taken depending on the solution being pumped. Refer to MSDS precautions from your solution supplier.
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