air cannon with interchangable barrels

This is my first instructable so give me a break. This is a pneumatic (compressed air) cannon that i made with my christmas money.It has dual 2 inch pressure chambers and right now i only have a 3 inch & a 2 inch barrel. i used a total of 13 parts and 11 sections of pipe all parts exept the 3 inch pipe and 3 inch reducer are all 2 inch pvc pipe.

************************ disclamer***************************
these devices might be illegal in your area DO NOT blame me for your idiotnessdo not shoot at peoples property and these are dangerous possibly fatal and be aware that all the pvc parts i use are rated to 250 PSI at least and if overpressurised will blow up and send plastic everywhere including into you do not use on cold days as this weakens it pvc doesnt show up on x ray!!

Step 1 Materials

hardware
16' of 2 in. pvc pipe                                                  ALL PVC PARTS ARE SCHEDULE 40 OR HIGHER
5' of 3 in. pvc pipe
1 2 in. pvc tee
2 2 in. 45 degree pvcelbows
2 2 in. 90 degree pvc elbows
2 2 in. pvc pipe caps
1 2 in. pvc ball valve
2 2 in. male slip/ftp (threaded) coupling
1 2 in. female slip/ftp coupling
1 3 in. to 2 in. reducing bushing
1 3 in. pvc pipe coupling  
2 rector seal cans of "hot" pvc cement
2 cans of purple primer 
paper towls
lysol disinfectant wipes any wipes will do just make sure they have alchol in them
 
software (tools)
1  1/4 npt pipe thread tap
hands

  the rector seal hot pvc cement bonds faster and seals better so i highly reccomend it 

how to seal pipe after you have cement on BOTH the pipe and part you are joining
stick them together and twist 90 degrees yow should have a sealed pipe

Comments

[pj81]

Hey man I would double check what the valve is rated to, because I havent found any pvc ball valves that are rated past 150 psi

[dog digger]

Get a metal ball valve. I have one rated to 300psi and it's a cheapie!