Close Loop Return Line

inkslinger

Guru Class Expert
Dec 15, 2007
370
3
18
My new close loop line is going to be 1 inch .
I need some of your opinion on my return line I was starting to built 2 returns from 1 inch to 3/4 inch to 1/2 inch split Loc-Line would this coast to much pressure . I have got all the parts put together and now I am having second thoughts of this .
Should I just stick with a 1 inch to 3/4 inch to a 3/4 inch split Loc-Line.
The tank is 60x18x24 and the pump is Blue Line 55 HD 1100gph w/NU-Clear 533 and later NU-Clear 547 , CO2 Reactor , UV Light ,Heater all 1 inch line.
Any thoughts!

IMO: It should be alright with all the equipment , vales , unions , and so on's I should have a large head loss anyways.
 

inkslinger

Guru Class Expert
Dec 15, 2007
370
3
18
Any body?? 1/2 inch duel Loc-Line X2 {Y slip} for the return in the tank on a 1 inch close loop line system on a 60x18 tank.
 

jmacego

Junior Poster
Dec 30, 2008
10
0
1
I don't know a specific answer as it depends a bit on how much flow you are willing to lose, but:

1" pipe has cross-sectional area of 0.8", 2x 1/2" has 0.4" so discounting the increased friction losses you'd need 4 1/2" pipes to equal 1 1" pipe. 2x 3/4" is, conveniently, 0.9" so just about right.
 

Gerryd

Plant Guru Team
Lifetime Member
Sep 23, 2007
5,623
20
38
South Florida
Ink,

Why not just go 1" to 3/4"? What do you think/hope will be gained/lost by the further reduction/restriction down to 1/2"?

You can also go 3/4 now and then 1/2 if desired later, then you have a comparison of both configs.......

Or, get 1 to 1/2" adaptors where possible if the 1/2 is what you want, you have to work harder for these parts lol, but saves the 3 step reduction to 2 (1-3.4-.5 to 1-.5). I have done this a lot either direction and they do make many size/type couplers/fittings/etc that facilitate matching different sized lines. Home depot and lowes had it all....just in different sections based on thread or slip..........

I went 1 to 3/4 on my setup and seems to work well for my 180..............
 

inkslinger

Guru Class Expert
Dec 15, 2007
370
3
18
I was thinking the same thing also after looking at the 2 that i built that i should had just gone with 2 3/4 Y split instead