how does a Crosman model 1400 valve work?

[jackssmirkingrevenge]

i will say you are a very helpfull user
this design woud work?

I try my best

Yes, that design looks like it would work, the valve is similar to the one I made here. The o-ring should pass over the hole with no problems, Just as long as the hole is smooth so it doesn't cause too much wear.

[experament-u2]

thought this might help

[Hawkeye]

That's not the same valve.