The wide spacing between the spindles seems to indicate to me that you would be exerting considerable force on it and really having to muscle it manually.
Now I will guarantee you that if it is a large diameter pipe, 12" or greater, such as a "water main" with upwards of 60 to 80+ psi water pressure flowing rapidly through it ....... you really will have to use considerable force to muscle it manually in getting it shut down. Its bout like trying to stop a train.
My younger brother once told me they were once trying to "shut the valve" on a newly drilled gas well that "came in" with 6,000+ psi on it and they had to use an 8 foot "cheater pipe" to do it.
Ps: West Virginia ships a lot of NG to the NJ, NY, etc. market and that could very well be for a pipeline valve or even from the old Standard Oil refinery there in NJ. Whatta I know?
