Need help with shopping list for plumbing

[Dodgersfan]

hey guys,

I’m putting together my shopping list for plumbing my tank, I’ve got the overflow side pretty well mapped out, and I know how much PVC I need, but I’m having some issues visualizing the return side.

I’m using a large eshoppes shadow overflow, so 3x 1”. I cant find any info on the overflow if the bulkheads are slip or thread (and it hasn’t been delivered yet) I’m assuming it’s slip, if I’m wrong please correct me. The only fittings on the overflow pipes will be a union and 2 45’s (x3). Pretty straight forward.

The return side is where I’m having issues. I’m using a reef octopus Varios 6 pump, so 1 1/4” outlet. I want to have a t in the return line so I can use the pump to move water out of the system for water changes. Here are my questions:

1- is there a valve that I can put where the water change line splits off of the return line that will send water down one or the other? Or do I have to do this with two valves, one on each line right after they split?
2 - I want to use locline in the tank, but I can’t find the part that goes from bulkhead to locline. Also locline comes in 3/4” at the largest, how do I get from 1 1/4 to 3/4? I was thinking of splitting to two 3/4” locline return nozzles (so I don’t increase the head pressure by making that big of a reduction) but I can’t find the piece that does it.
3 - I want a threaded fitting on the inside of the bulkhead and slip on the outside right? BRS has them both ways, but they say “flange/head side”. I think that’s the outside right? Need confirmation.


Can anyone post links to where to buy the parts I need above? Thanks for the help!

 

[Big G]

My Eshopp's Eclipse came with down flow outlets as "slip". Real simple: glue a 3" piece of pvc to the outlet. Glue a slip x thread adapter to that 3" piece. Now you can attach a "thread x thread" union. Use "threaded" unions everywhere.
My RO varios-2 came with reducer fittings. I reduced it to 1" to make everything 1". Of course you can do the same with 1 1/4" as follows.
1. Two valves
2. I used a thread x thread 1" bulkhead. On the inside of the tank, use a thread x thread reducer to go from 1" to 3/4"
3. Again, I used thread x thread bulkhead. Insert short threaded nipples (close nipples) to connect to threaded elbows, threaded unions, etc.
I used heavy duty teflon tape for all my thread fittings. Do not use that cheap, thin white stuff that shreds, tears and falls apart. Others have used a thick paste link product for threaded applications (not glue).

Here's a pic of the back of my tank before I added water. Notice all the "thread" fittings. Much easier to work with and replace if need be. I hope this helps. Cheers! Enjoy the build.

 

[Dodgersfan]

I was going to use a street 90 to go into the return bulkhead, I was worried it would stick out to far otherwise, but looking at yours it looks like that won’t be necessary...

Also I can’t find the reducers anywhere online, can you link me to them?

 

[Big G]

I was going to use a street 90 to go into the return bulkhead, I was worried it would stick out to far otherwise, but looking at yours it looks like that won’t be necessary...

Also I can’t find the reducers anywhere online, can you link me to them?

Here you go. Hope this helps. Cheers!
https://www.bulkreefsupply.com/sche...hread-1-a318166b8539611449bf21ddc297a783.html

 

[Big G]

Here's the "close nipples" link. They are very short, virtually all thread with just a fraction of an inch in the middle.
https://www.bulkreefsupply.com/schedule-80-nipples.html