Close Loop Head loss

[untamed]

Originally Posted by Chad

Oh ok. .I see... so is there a way to balance the flow to the outer edges of the CL? Also, where can you find that grey schedule 80 pipe? I figure that would look a lot nicer than the white stuff.

You could do what I did....paint cheap pipe. Sched 80 stuff is really expensive. Corix can supply you with the pipe you need. Ask for class 200. You don't need Schedule 40, the class 200 is thinner walled so you have larger diametre opening for the same size pipe. Easier to work with also. You aren't running the kind of pipe pressure that would require sched 40 or 80.

[danny zubot]

so is there a way to balance the flow to the outer edges of the CL?

Valves are probably the best way, plus you will be able to adjust each output individually if you want. I don't have any, and I wish I would have installed them for the versitility they would have brought to my CL. As it stands, with not valves, I get more pressure coming from the furthest outputs of my manifold. My guess is that is where I have the highest back pressure, but maybe someone else can shed some light on that.

[Chad]

OK, so where is Corix? Also, what type of paint do you use for the pipe? I do like the grey of the sch 80 stuff.. maybe black would be nicer.

I was going to use lock line at the outlets, using valves on each outlet might be expensive and un-sightly. I am figuring atleast 10 - 15 outlets.

Could I use a reducer at the end, so say, 1/2" at the end outlets and 3/4" in the middle to balance it better?

[danny zubot]

10-15 outlets? What kind of tank, and what kind of pump are we talking here. I'm curious now.

I'm using 3/4' locklines on mine which work pretty good for my dart. (3600 gph) I only have 6 of them though.

[Chad]

It is a 34gal cube. I am going to use a Quiet One 4000... Using the Reef Central head loss calculator it says I will be down to about 700 or so gph with all the elbows etc etc.

I will try and post a pick of what I am thinking of doing.

[mark]

10-15 outlets, you making a CL (pump drawing from display) or a return manifold (picture here)?

If you are making a manifold, there will be head loss.

[Marlin65]

Corix is in Richmond off of River Road near Home Depot.
Gray pipe they use for electrical conduit look at Home Depot or Revy in the electrical section. Limited fitting though you might have to use some white.