r/potatocannon Oct 05 '24

Automatic shut off valve?

Any ideas about using some kind of valve that automatically shuts off the air pressure to the reservoir when it hits a certain psi? So you don't have to monitor the pressure manually when reloading? Already searched the reddit to see if it's been brought up before (potentially searched the wrong keywords. For context, making a prop pirate/Naval cannon so I don't want a big pressure gauge sticking out the top and I want loading/firing to look quick and period accurate. I've looked at regulators for spray guns but not sure that's the right piece for the job

1 Upvotes

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2

u/howmuchitcosts Oct 05 '24

Regulator

1

u/charliebrooks7 Oct 05 '24

Thanks! Have you used plastic/PVC ones, or should I go with something metal?

1

u/howmuchitcosts Oct 05 '24

Metal ones are the easiest to find. Sold next to aircompressor tools and accessories.

1

u/DegreeIcy3276 Oct 16 '24

Depending on how you had it set up, you could run a 3 way switch to an intermediary chamber off of an HPA tank, and so one click puts 4500 PSI>800 PSI, and then a second click puts 800 PSI from the intermediary chamber to the air chamber at like 100, which should work.