If you have the correct size tap for the nipple you should go ahead and tap the hole out.
Pvc air cannon sprinkler valve.
Instead i will mount the nipple and blow gun trigger to the plug itself.
How to build an air cannon with a sprinkler valve.
Drill a half inch hole into the center of the plug.
Pvc air cannon with sprinkler valve there are a number of cool things you can do with them remote detonation and sentry gun to name a couple not even counting the ease of use that a simple electric trigger has over a rubber powered ball valve as on my air rifle which has to be reset after each shot.
At 60 psi this d.
A safe alternative for a new style sprinkler valve air cannon trigger.
It looks awesome and can kill a watermelon from.
This cannon is capable of shooting projectiles such as oranges or parts of a potato very far distances and at very high velocities.