brs2014
Please look at your entire post, from your handle (mechanical engineers work in hundreds of industries) to your one-sentence post and ask yourself "If I was sitting in (say) Russia would this convey enough information to allow someone to answer my question without a bunch of back and forth?"
You might want to address something like:
[ul]
[li]What are you injecting (liquid or gas for starters)?[/li]
[li]What pressures/temperatures (is the fluid near a phase-transition temperature, chokes can be a huge problem near phase changes)?[/li]
[li]What magnitude of flow are you expecting?[/li]
[li]What is the goal of the injection (in Oil & Gas, it could be for secondary/tertiary recovery or simply for produced water disposal, other industries likely have other things they "reinject" for)?[/li]
[li]Are you experiencing a problem or is this a prospective design?[/li]
[/ul]
I've just spent 20 times as much effort on your post as you did. Could you give us a reason for caring enough to try to give you answers instead of questions?
In my industry nearly nothing is "always", just like nearly nearly nothing is "never".
