pvc dwv

[jbeeson]

i have been look around and all the pvc i can find is dwv fittings and cellular core pipe. any suggestions? how bad would it be to use those?

[Zeus]

It depends, I strongly dislike PVC due to it's fragmentation characteristics, in a spray & pray it "might" hold out, if you get a near perfect fueling ratio at some point it could give you many piercings, or it may not.

Try a plumbing supplier or agricultural supply store, they have a very good range sometimes. It wouldn't hurt to post an approximate location, just so we can help you better.

I can get 6 inch PN12 fittings and pipe at my local ag store, so such fittings are available, just a matter of looking in the right places.

A small ag store near me has the largest array of steel SCH 40 pipe I've seen, half the price of a hardware store too.

[mark.f]

Where are you looking, first of all? If you can't find the pipe and fittings you need at a local-type hardware store try a big-box place, and if you can't find them there check out some irrigation stores. You may have to do some running around.

For a combustion, DWV solid core pipe and fittings will be acceptable. For a pneumatic, you must use pressure rated pipe and fittings. Your location would help a lot.

[Technician1002]

Is the Cellular Core stuff PVC or ABS? If it is ABS the testing I have done can be seen in the thread in my sig below. I know.. Shameless self promotion...

[jrrdw]

Try here.

[jbeeson]

i found some pressure rated pvc and pressure rated couplings. the couplings are quite expensive so i think i will use those for the elbows and use dwv for the simple couplings not receiving much stress

[Technician1002]

It is only as strong as it's weakest part.

[mark.f]

He's referring to the stress placed on the elbows due to recoil when firing, not pressure.

[jbeeson]

actually i was thinking that because the majority of a simple coupling's area is reinforced with the pipe it is attached to there is a fractional area on each coupling actually receiving any pressure. in contrary on the elbow they have a larger area not directly reinforced by the pipe therefore more potential area subjected to the pressure generated when firing.

[Gun Freak]

There is some truth in that but it is just as unsafe in my mind. Doesn't matter how much is exposed... what matters is that it is exposed.

[jimmy101]

Cell core pipe is fine for even an advanced combustion gun, as long as it is at 1X. It'll handle the ~130 PSIG max pressure that a jammed round would produce.