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Basics of a Retractable Injector

 

Retractable Injectors provide a safe means to inject chemical into a pressurized process pipe. The ability to insert and retract the Solution Tube, while at the same time isolating both the chemical and pressurized process fluid, means safer operation and fewer process shutdowns.

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.

Retractable Injector  

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
 
 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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