chem injection quill in ductile iron piping

[jartgo]

Injecting Caustic, Bleach, Flouride, and Phosphate at a potable water well treatment system. The proposed piping is 6" ductile iron. What is the best way to connect the injection quills? I was thinking a simple service saddle might be the most operator friendly but thought a corp stop with a shutoff might come in handy as well. What do you think? I suppose the easiest solution would be a direct tap.

 

[bimr]

A corp stop with a shutoff is the typical method.

 

[jartgo]

Direct tap the corp stop or use a saddle?

 

[bimr]

I believe the most common is a saddle.