Quick Semi-Auto Question

[grock]

I've seen dozens of posts about hammer valves, etc, but couldn't semi auto be achieved with a constant supply of air and a sprinkler valve/qev?
is that option just less efficient/powerful?

Thanks

[jackssmirkingrevenge]

I've seen dozens of posts about hammer valves, etc, but couldn't semi auto be achieved with a constant supply of air and a sprinkler valve/qev?
is that option just less efficient/powerful?

Certainly, the important thing is that you're feeding air in such a manner that your valve reseats as soon as you close the pilot, for this reason I suspect a QEV is a better idea than a sprinkler valve.

Since you're dumping air through the pilot it would be a bit less efficient than a hammer valve but certainly has the potential to be much more powerful, especially for larger calibres.

[inonickname]

It will work as long as your pilot has more flow than the inlet. Horribly inefficient though, It's better to use something which closes the inlet on firing.

[Ragnarok]

Horribly inefficient though, It's better to use something which closes the inlet on firing.

Suggestion on my part: Slide/Sleeve valve, at least if a QEV is being used.