Corporation Stops and injection quills are used for injecting chemicals pumped by metering pumps into tanks, mains, cooling towers, and process systems.

Quill Diagram

Corporation Stops

Corporation Stops

Corp Stop Installation

A corporation stop is a special stop valve that is installed under pressure, or, “hot tapped”, directly into a water main without draining the system. Corporation Stops allow an injection quill to be inserted or removed through the valve. The quill (often referred to as a “stinger”) extends into the center of the water stream. This provides more uniform dispersion of injection chemical.



Injection Quills

High-Pressure Injection Quills are used to safely connect a liquid chemical feed system to a pipeline or vessel. Chemicals are pumped by metering pumps through piping and injection quills directly into the turbulent flow zone of high-pressure water or steam lines where pressure is highest. This allows a more uniform mixing because it prevents chemical from flowing along pipe walls. Many injection quill models have integral spring-loaded ball checks that prevent the flow of the injected chemical into the main flow when the system is shut down.

More details are available in the links below.

Two Styles of Quills Are Available