Basics of a Retractable Injector

Solution Tube:

From inlet to tip, the Solution Tube isolates the chemical feed and delivers it to the desired point of injection within the process pipe.

Limit Chain:

Prevents the Solution Tube from retracting past the Compression Ring. Also used to assist insertion/retraction of the Solution Tube by providing a stop point at which the Main Connection Valve can be closed.

Safety Hook & Restraint Chain:

Locks the Solution Tube into the operating position.

Compression Gland:

Consisting of the Packing Nut, Compression Ring, and Solution Tube Adapter. The Compression Gland provides a seal against the O.D. of the Solution Tube, providing isolation of the process flow while the injection assembly is in service.

Main Connection Valve:

Provides the port through which the Solution Tube passes into the process pipe. Also provides a means of isolating flow from the process pipe when the Solution Tube is retracted.

Packing Nut
Compression Ring
Solution Tube Adapter