Sch 40 vs Sch 80?

[bguile]

What is the difference between the "normal" sch40 pvc and the sch80 pvc (gray), besides color? Is it safe to use in a reef?? Also, what about the offwhite colored plumbing?

 

[Bkndsdl]

Thickness of material. Sch40 is what's called standard wall thickness, where Sch80 is thicker. There is no difference in color between the two.

Off-white is what's called CPVC. I wouldn't use it, bc it's not as strong.

HTH!

 

[rickh]

The schedule 80 (gray) has a thicker wall and is stronger, but it's also smaller inside diameter. I use schedule 40 (white) pipe and fittings externally, but use schedule 80 on any parts that show in the tank. It looks better than the white, it still isn't dark enough to completely blend into the background R

 

[flyyyguy]

Schedule 40 is plenty strong for the weak pressures we use as reefers. BUT, as already noted, schedule 80 in the tank is much more attractive......at least IMO.

I will also offer this. For inexperienced plumbers and/or people who like to tweak threaded fittings far tighter than they need to be, it is in their best interest to get schedule 80 threaded fittings as well as schedule 80 threaded unions and threaded bulkheads (if you use threads on these items)as they are much tougher to break. ; )

 

[latazyo]

if you dont like the color, Krylon Fushion paint is designed to bond to plastics and is reef safe

I use it on white sched 40 where visible and it looks phenominal

 

[sjm817]

I often use sched 26 thinwall PVC. Same OD as sched 40 and 80, but larger ID. More flow without going to larger plumbing.

 

[flyyyguy]

It really doesnt give you more flow......your pump will determine that.............it can reduce the velocity while maintaining the same flow depending on your final outlet which isnt a bad thing especially when you get into the upper realms of turnover as it is, but its not by much and i personally cant handle pipe that can be crushed by stepping on it. In all reality it is probably fine for our application but i have laid too many sprinkler systems to be able to even look at the stuff.......

 

[flyyyguy]

<a href=showthread.php?s=&postid=8163607#post8163607 target=_blank>Originally posted</a> by latazyo
if you dont like the color, Krylon Fushion paint is designed to bond to plastics and is reef safe

I use it on white sched 40 where visible and it looks phenominal

Is it a spray paint???

The only plumbing visible in my tanks is my omniflex nozzles and the spa intake covers over my cls............BUT, the spa intake covers arent the same color of black and the omniflex are of course schedule 80....... hmmmmmmmmmmmmm

 

[Theexp]

yeah, krylon fusion is a spray paint.

 

[sjm817]

<a href=showthread.php?s=&postid=8163788#post8163788 target=_blank>Originally posted</a> by flyyyguy
It really doesnt give you more flow......your pump will determine that.............it can reduce the velocity while maintaining the same flow depending on your final outlet which isnt a bad thing especially when you get into the upper realms of turnover as it is, but its not by much and i personally cant handle pipe that can be crushed by stepping on it. In all reality it is probably fine for our application but i have laid too many sprinkler systems to be able to even look at the stuff.......

It does increase flow. Larger diameter pipe increases flow (less headloss). Its rated for 200 PSI.

 

[flyyyguy]

oops

 

[flyyyguy]

its not enough difference to matter......and like i said...it IS plenty strong for our needs even though it is crap pipe

There is far more headloss difference associated with using flexpipe vs hard pipe of the same inside diameter than there is in the difference between hard schedule 40 and class 200 stuff with differing ID's.

But you gain more than you lose with flex pvc by eliminating most 90's and 45's in the trade off for friction in the pipes. That and it can be done way more attractively

 

[CoralFiend]

If a color match against a black background is what you are looking for, you can get a glossy black pvc pipe through Savko. It is harly noticeable in the back of the tank and once coralline starts to grow, it should blend in even more.

Savco Black PVC
They also sell black fittings. Savko black PVC fittings

 

[flyyyguy]

Thanks coral fiend......but i am really fond of OM's omniflex nozzles as well as spa intake covers for covering up cls inlets.........neither of them stand out now but i still am looking into picking up some krylon paint : )

 

[rickh]

I have used black flexible PVC pipe like they use for wells and sprinkler systems to make "covers" for some of the white pipe and fitting in the tank. I don't like the idea of paint in the water. People used lead based interior paint in their home for years. Look where that got us. RRRRRRRRR