Plumbing help!

[ibryson]

I have decided to go with flexible tubing for my tank plumbing. Im keeping it simple, two drain tubes and two return tubes, so I dont think PVC would really be necessary. My problem is finding a reducer to connect 1 1/4 inner diameter tubing to 3/4 inner diameter. Do these things even exist?? The closest I've gotten is 1 1/4 to 1 reducer.

My drain pipes are 1 1/4 and the return pipes are 3/4. Is there a better solution to this?

 

[wrott]

Do you need slip or threaded?
Soak ends of vinly tubing 5min in boiling hot water, then slip onto adapter.
https://www.lowes.com/pd/Genova-3-4-in-x-1-1-4-in-PVC-Adapter/3364726
https://www.usabluebook.com/p-26628...ng-adapter-1-14-nptm-x-34-hose-barb-size.aspx
https://www.menards.com/main/plumbi...5-c-13795.htm?tid=-7765367998120339842&ipos=1

 

[mcgyvr]

Why do you need to adapt your drain to your return?
Keep the drain as all 1-1/4 tubing and let the returns stay 3/4 tubing all the way..

 

[ibryson]

Why do you need to adapt your drain to your return?
Keep the drain as all 1-1/4 tubing and let the returns stay 3/4 tubing all the way..

The piece that came with my return pump is a threaded and barbed piece for 1 1/4 diameter, but my overflow kit return pipes came with a bulk head barbed piece that's 3/4 diameter. I was thinking I needed a double sided barbed piece that would connect the return pump tubing to the return pipe tubing. But maybe I'll just buy a new piece for the return pump (threaded side 1 1/4, barbed side 3/4)

 

[ibryson]

Do you need slip or threaded?
Soak ends of vinly tubing 5min in boiling hot water, then slip onto adapter.
https://www.lowes.com/pd/Genova-3-4-in-x-1-1-4-in-PVC-Adapter/3364726
https://www.usabluebook.com/p-26628...ng-adapter-1-14-nptm-x-34-hose-barb-size.aspx
https://www.menards.com/main/plumbi...5-c-13795.htm?tid=-7765367998120339842&ipos=1

Do they make these pieces that are barbed on both sides rather than threaded on one side?

 

[wrott]

Yes, search with the term, Barb x barb

 

[nereefpat]

Return pump -> 1 1/4" tubing -> reducer to 1" -> 1" tubing -> reducer to 3/4"

 

[mcgyvr]

Return pump -> 1 1/4" tubing -> reducer to 1" -> 1" tubing -> reducer to 3/4"

Yep.. Often with tubing you need to step down one size at a time..
barb to barb reducers will get you there...

 

[ibryson]

Are hose clamps necessary for these connections? They seem pretty tight already but I wonder if these connections loosen up over time? I can also see negative affects of clamping them too tight also....

 

[Vinny Kreyling]

Better safe than sorry, but most times , in fact always, after some time you will have to cut the hose to remove it.

 

[mcgyvr]

I would never use tubing without a clamp of some sort..
The tubing can expand/degrade,etc... over time and a clamp is simple/cheap insurance..