Home-made Pneumatic Tennis Ball Gun

[MrCrowley]

StClingin im from New Zealand as well, we use three pressure lable things on pipes heres the first.

Class A=low pressure
Class B=medium pressure
Class C=80psi max
Class D=145psi max
Class E=170psi max
Class F=260psi max

Class 1-18
1 being the lowest pressure
18 being the highest
1=1BAR(7psi)
2=2BAR
etc
18=18BAR(260psi)

now if it doesnt have those on the pipe it might have PN which stands for "Pressure Number" if it has PN12 that means 12BAR(173psi)

i think thats all correct i may be a tad off

[frankrede]

not if you buy them onlune or make them at work.

Still,most people make their own, I dont want to spend 1000 on a cannon I could build for less than 300

[SpudStuff]

sarcastic comment