Injection Quills

Koflo Chemical Injection Quills are used to introduce medium to highly corrosive chemicals into a pipeline without damage to the side port or pipe wall at the point of injection. Chemical injection quills ensure that chemicals are evenly dispersed into the center of the pipeline, which prevents channeling of the chemical down the pipe wall. The body and stinger are both constructed of chemical resistant plastics or alloys (PVC, Kynar, 316 SS, or Hastelloy C-276). Injection quills with 3” and 5” long stingers are available from stock. All injection quills come with 1/2" FNPT x MNPT connections for ease of installation.

Koflo line of chemical injection quills: PVC, Stainless Steel, Kynar®, and Hastelloy® injection quills

All quill models are available and in-stock:

Request Pricing
Size comparison of 3 and 5 inch PVC injection quill stinger lengths

3" and 5" Stinger Lengths

Koflo stocks all quill materials in 3" and 5" stinger lengths. Custom stinger lengths are available upon request.

Precision-Engineered Components

Machined housings ensure reliable and even chemical dispersion within the center of the pipeline. During the manufacturing process, all quills are individually tested to Koflo's high standards and are guaranteed to be leak-free. Each unit comes complete with an integral removable spring-loaded ball check to prevent flow of the injected chemical into the main flow when the system is shut down.

Hastelloy injection quill Exploded

Available Material Options:


Moderate chemical resistance

PVC injection quill body

316/L Stainless Steel

Moderate chemical resistance

316 stainless steel injection quill body

PVDF Kynar®

Improved chemical and corrosion resistance

Kynar® injection quill body

Hastelloy® C-276

Superior chemical, temperature, and corrosion resistance

Hastelloy® C-276 injection quill body

Technical Drawing PDF

Technical Specifications

Note: The minimum cracking pressure for all injection quills is 50 psi.

Quill Model
Check Ball
Pressure (PSIG)
Temp (°F)
QP-.5-3 1/2" 3" PVC Hastelloy® C Ceramic 150 140
QP-.5-5 1/2" 5" PVC Hastelloy® C Ceramic 150 140
QK-.5-3 1/2" 3" Kynar® Hastelloy® C Ceramic 150 280
QK-.5-5 1/2" 5" Kynar® Hastelloy® C Ceramic 150 280
QS-.5-3 1/2" 3" 316/L SS Hastelloy® C Ceramic 3000 500
QS-.5-5 1/2" 5" 316/L SS Hastelloy® C Ceramic 3000 500
QH-.5-3 1/2" 3" Hastelloy® C Hastelloy® C Ceramic 3000 500
QH-.5-5 1/2" 5" Hastelloy® C Hastelloy® C Ceramic 3000 500