SpudFiles

im making a paint ball gun with a 3/4" sprinkler valve (or maybe 1" wich ever ones better) with a breach loader and a stock. but i don't know what size to use for the barrel iv herd that 3/4 CPVC is better than 1/2" sdr21? is this true?

Ive used 3/4 but a standard paintball dosnt fit snugly. A paint ball will not however fit in a 1/2 inch barrel inless you can some how bore it out. Good luck, post it when your done

will do and not SCH40 1/2 SDR 21

He said 1/2" SDR 21. It has a thinner wall than Sch. 40.
As to your question, I always use 3/4 Sch 80 pvc for my PB barrels, but it's up to you...

it that better than 3/4"cpvc as in tightness

supposedly 12 sdr 21 is pretty awesome, but i used a 3 foot length of sch 80 untill me friend gave me an 18" paintball barrel from a crappy gun of his.

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You could alway get a cheap 21" sniper paintball barrel, I like the ones threaded for a Tippmann 98 Custom.

most people prefer 3/4 cpvc

ohh i thaught you meant sch 40, my bad
Arent titmann barrels expensive?
If you found one that is not i would be extremly interested

I have seen some on Ebay for about $25.00, there a bit more expensive now, I got mine for around $15.00 with shipping.

turbohacker wrote:ohh i thaught you meant sch 40, my bad
Arent titmann barrels expensive?
If you found one that is not i would be extremly interested

he he he you said titman well to answer your question most people use cpvc or 3/4 sch 80 there are alot of other choises but these are oftain the easiest to find in stores

personnaly i would sue 3/4 cpvc as it would be better.

there is many pros and cons between the two pipes

3/4 cpvc

pros-

cheap

has a tight enough fit that the ball ownt roll out and a loose enoguh fit for it not to effect performance.

cons-

bends easily

i have never used sch 80 pvc but i am suggesting that is not going to bend easilly and it will be more durable. but more expensive

well thank all of you who posted and i think im going to use the 3/4" CPVC
just cuz of how cheep it is. and it seems like a good fit. now for the valve should i use 1" or 3/4" im thinking the 3/4" cuz of the same size i cold be wrong tho

no need for 1", it will just be restricted by the barrel, thats my thaught