SpudFiles

i have two questions about sdr-21 pipe:

1. my dad works at a hardware store and isnt sure what sdr-21 is but they have thinwall pvc is it the same thing?

2.and somethings that doesnt really matter, what does sdr stand for?

if thinwall isnt the same thing im probally just going to buy some online

no it's not the same.
you can buy golf ball barrels from may spudgunners and their stores.
pimpmann22 (vivi)
bcpneumatics (bcarms)
sgort (launchpotatoes)

You can also get them locally from pipe shops and irrigation supply shops

ok thanks benstern, do you think lowes should have em? its a good drive and i havent got a chance to go check it out

most lowes I have been to dont have the sdr variety pipe.

They have sdr but only to 1 1/4 inch

it's also refered to as something 200, I can't remember what it is. You might want to google sdr 21 and see what it also is referred to. I went to our local plumbing store and he said he didn't have sdr 21 but that he had this 200 stuff which is exactly the same.

If you have access to a table saw use it to mod some 2" sch40. It explains it in the wiki. I have used both the sdr21 inside 2" sch80 and the 2" sch 40 inside 2" sch 40 and the only difference I have found is that the ball is a little tighter in the 2" sch 40 thats been modded.

yeah but its not as good looking and is harder to get perfect.

benstern wrote: no it's not the same.

Where I live, it is. Only way I could get a stick of 1-1/2" SDR-21 from the hardware store was looking for a chunk of 1-1/2" drain pipe for an unrelated project. No sense in using SCH-40 for drain! It was about $0.55 a foot.

ok thanks guys im probally just going to take a golfball to the store and see if it fits if it doesnt then ill buy online

Oh yeah, I just remembered what it's also called. Class 200 pipe. It's the exact same thing as sdr 21, just a different name. Just ask the guys at your local plumbing store(not to be confused with something like home depot or Lowes) for sdr 21 or class 200. Also ask if they can order it if they don't have some.

ok thanks squeaks ill see if my dad knows what that is

Do they sell reducers from 4"schedual 40 to the 1 1/2" sdr 21 inside the 2" schedual 80?

just get a 4" to 2" bushing. The schedule 40 fittings will go on any other thickness of pipe because they all have the same OD.

Made one just the other day, it was a bit of a chore cramming one pipe into the other.

Originally slated to be 48" long, the pressure rated s40 PVC shattered at one point so I was forced down to a 32" barrel. All in all, I think it came out fairly decent, with the proverbial 'gap' being very minimal. I also used small pieces from the strip I cut out and glued them inside at the breech end as a ball stop. I have yet to use it, but I'm sure it'll be pleasing. I'll let you know. -Lp