abs pressure rated?

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#1
Anyone know if abs is pressure rated. Its usually used for drains. I don't now about plumbing with pressure. I currently have some running under my house. One as drain and one as return. I'm using a barracuda gold so a lot if pressure. Someone brought it to my attention and I'm thinking it could bust. Since its so thin. Professionals please chime in.
 

pgr11

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#3
There is no need for sch 80 at all. Sch 80 will restrict flow and cost you way more for nothing. Sch 40 will handle that just fine. For that matter so would class. Abs is generally used in drain applications. The pressure rating depends on a number of things one being the size pipe. I would never trust abs in my system.
 
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#5
why abs when there is sch 40 pvc? is it because it black. just paint it.
Yeah. I picked it be azue its black. Didn't realize bow thin it was. Schedule 40 is just regular PVC you find at home depot right? I guess the color doesn't matter sin e I plan on wrapping pipe foam around it. A lot of pipe runs outdoor . so it'll get really cold and really hot from the sun.
 
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#6
There is no need for sch 80 at all. Sch 80 will restrict flow and cost you way more for nothing. Sch 40 will handle that just fine. For that matter so would class. Abs is generally used in drain applications. The pressure rating depends on a number of things one being the size pipe. I would never trust abs in my system.
I'm going 1.5". Per barracuda recommendations.
 

zigginit

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#7
the black stuff is used for drains since it is less pressure... usually just gravity. the white stuff is used for distribution of water under pressure. sch 40 vs 80 has to do with the pressure being applied. 80 being thicker for more pressure. Both schedule 40 and 80 PVC are used widely around the world. Each one has its benefits in different applications. Schedule 40 pipe has thinner walls, so it is best for applications involving relatively low water pressure. Schedule 80 pipe has thicker walls and is able to withstand higher PSI (pounds per square inch). This makes it ideal for industrial and chemical applications. To give you an idea of the size difference, 1” schedule 40 PVC pipe has a .133” minimum wall and 450 PSI, while schedule 80 has a .179” minimum wall and 630 PSI.
 
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#8
man, on my old tank, i used sch20 PVC for my returns and drains... there's no way any reef pump is going to push any serious PSI's... unless you're pushing a ton of GPH through a tiny spray bar or something...
 
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#9
There is a tiny bit of pressure from a return pump to the outlets into the tank. So you can pretty much use anything. But like I always say better safe than sorry, specially with lines running in the house.. have you ever thought about using pex? Its like a flexible pvc, and its pressure rated pretty high.
 
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#10
There is a tiny bit of pressure from a return pump to the outlets into the tank. So you can pretty much use anything. But like I always say better safe than sorry, specially with lines running in the house.. have you ever thought about using pex? Its like a flexible pvc, and its pressure rated pretty high.
Haven't heard if pex. But going anything flex is going to be too expensive. I have to use 1.5". It'll be at least 1.50+ per foot. And its gotta go at least 25-30'.
man, on my old tank, i used sch20 PVC for my returns and drains... there's no way any reef pump is going to push any serious PSI's... unless you're pushing a ton of GPH through a tiny spray bar or something...
I'm using barracuda gold. So it'll be 2000+ gph after the pressure lost from the turns and head pressure.
 

pgr11

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Haven't heard if pex. But going anything flex is going to be too expensive. I have to use 1.5". It'll be at least 1.50+ per foot. And its gotta go at least 25-30'.


I'm using barracuda gold. So it'll be 2000+ gph after the pressure lost from the turns and head pressure.
Your thinking of the pressure and flow wrong. Your going to have very little pressure running through your plumbing. Those ratings are for static pressure. How much the plumbing can handle in a closed pressure system. Our tanks are not closed like that. What your after is flow. Class 200 or sch 40 will be fine for your application. Class is thinner and will flow more. I like sch 40 just because its a little stronger. Sch is so so overkill. Its just a waste of money
 
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#14
Your thinking of the pressure and flow wrong. Your going to have very little pressure running through your plumbing. Those ratings are for static pressure. How much the plumbing can handle in a closed pressure system. Our tanks are not closed like that. What your after is flow. Class 200 or sch 40 will be fine for your application. Class is thinner and will flow more. I like sch 40 just because its a little stronger. Sch is so so overkill. Its just a waste of money
So abs is fine? If so that will save me a lot of head and more bleeding. I tire up my arm trying to get the plumbing into the 2" hole under my floor base
 
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pgr11

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So abs is fine? If so that will save me a lot of head and more bleeding. I tire up my arm trying to get the plumbing into the 2" hole under my floor base
If it were me I would ditch the abs. Abs is designed for drains, mainly black water and gravity drains at that. You will have pressure in the pipe just not a bunch. You'd probably be OK but I wouldn't trust it. Plus since abs isn't designed to be used for potable water I also would trust it in my system. Class or sch 40 is used for drinking water so you know 100% that its safe and won't leach anything into your water
 

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And if you ever smelled it when you cut it, you wouldn't use it.
 
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#17
I think I'm going to stick with the abs. Just because I don't have the help to replumb and get the pipes through the tiny hole in my floor. I googled if abs is reef safe and found multiple old threads saying a lot of people have used them with no ill affects. I didn't find a clear answer to whether or not the abs glue is toxic. But I'll just do a full month cycle this time around and run a bunch if carbon. If everything dies or the pipes explodes I'll have a for sale thread up shortly after. Lol.
 

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