Rusty,
I am a 4th generation plumber / pipefitter.
I have done plumbing and pipefitting work, including process piping and residential plumbing, hot water and steam heating work since 1975.
I am licensed in South Carolina. I was previously lcensed in Pennsylvania.
A gate valve should not be used for throttling service in residential use.
A gate valve should not be used for throttling service in commercial use.
A gate valve should not be used for throttling service in industrial use.
I have not worked in power plants, but gate valves should not be used for throttling service there either. It is the wrong application for that valve. Actually, they make motorized ball valves with worm gear drives. You won't find them a Lowes, but they could use them in power plants if the wished.
You are mis-informed. I have seen you give good advice here before, but this time you are mistaken. It happens to all of us sometimes. Getting belligerant does no one any good, including yourself. Even experienced people can still learn new things. Please take this oppurtunity to learn something new.
Stretch