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[Build Log] - The Big Budget Boomer Box (aka, the "BBBB") - Page 329

post #3281 of 3982
Quote:
Originally Posted by cpachris View Post

Two 45 degrees together to make a 90 degree? Or a 45 degree...separated by some tubing....and another 45 degree?

Preferably with the tubing separating, 90degrees are terrible for restrictions
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post #3282 of 3982
Thread Starter 
Quote:
Originally Posted by wthenshaw View Post

Preferably with the tubing separating, 90degrees are terrible for restrictions

Ya know...I've seen that often suggested....but never tested. Wonder if anyone with equipment would, or has, done something to give us a feel for the true pressure drop created by 90 degree fittings.
post #3283 of 3982
Quote:
Originally Posted by cpachris View Post

Ya know...I've seen that often suggested....but never tested. Wonder if anyone with equipment would, or has, done something to give us a feel for the true pressure drop created by 90 degree fittings.

I guess its all about going in as straight lines as possible, someone must have done this by now though
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post #3284 of 3982
Quote:
Originally Posted by cpachris View Post

Two 45 degrees together to make a 90 degree? Or a 45 degree...separated by some tubing....and another 45 degree?
From my experience with R.O. units making the bending as gradually as possible is best I never seen a huge decrease with tube between the two 45.. even better then 45's is 3 30's. I was able to increase potable water production around 20%. The trick is make the 90deg turn as shallow as possible...
post #3285 of 3982
Thread Starter 
Yes...I have no doubt that the sharper the turn...the more restrictive it is. I just wonder if we are talking about pressure drops that are significant at all. I wonder if Martin might be willing to test some 90 degree angles vs some other angles. Hmmmmmm......
post #3286 of 3982
Quote:
Originally Posted by cpachris View Post

Yes...I have no doubt that the sharper the turn...the more restrictive it is. I just wonder if we are talking about pressure drops that are significant at all. I wonder if Martin might be willing to test some 90 degree angles vs some other angles. Hmmmmmm......

And more specifically a curved 90 vs a right-angle 90.
post #3287 of 3982
Quote:
Originally Posted by cpachris View Post

Ya know...I've seen that often suggested....but never tested. Wonder if anyone with equipment would, or has, done something to give us a feel for the true pressure drop created by 90 degree fittings.

Martin did test elbows, the chart really speaks for itself:

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post #3288 of 3982
Quote:
Originally Posted by Aximous View Post

Martin did test elbows, the chart really speaks for itself: Warning: Spoiler! (Click to show)

+rep good sir
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post #3289 of 3982
Thread Starter 
It does show how small the impact really is when you only have one angled fitting...but I'd still be interested in seeing:

- curved 90 vs hard 90
- two 90 put together to form a 180
- 30 vs 45 vs 90
- straight fittings vs tubing

I guess I'd be interested to see if the restriction is simply an add em' up based on the number of fittings...or if the restriction is greater as you add more fittings and change the direction of the flow more than one time.

I've got a ton of extra fittings of all sizes....I might see if Martin has the time or desire to do a little more testing in this area.
post #3290 of 3982
Quote:
Originally Posted by STUNT1990 View Post

Awesome!
I need to read this whole thread soon biggrin.gif

Ha you need a six week holiday for that. biggrin.gif
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