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Old 06-18-2013
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Default Bulkhead plumbing questions

Hi Everyone,

Started doing plumbing for my tank and kind a stuck. Picture below shows the 3 bulkheads mounted at the bottom of the tank.

The two on the left are 1.75" for outgoing, which uses 1" PVC.
The one on the right is 1.5" for return, which uses 3/4" PVC



The bulkhead shows thread on both outside and inside. If I use female connector (with thread), what size should I buy? I bought 1" female connector and it does not fit. It's too small.

I plan to add union there also in case I need to remove the plumbing for moving later.

Same questions for the return bulkhead.

Plumbing experts, please help...

Thanks all.
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Old 06-18-2013
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I don't use those types of bulkheads. I use threaded x slip bulkeads and just glue the pipe to the interior, slip, portion of the bulkhead. I would just unscrew the bulkhead and take it with you to the hardware store and try them until you find the right size
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Old 06-18-2013
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The outer threads on those bulkheads are only for the nut. If the inner piping is threaded, you should use a male pvc fitting, not a female.

Home Depot has all sorts of pvc fittings. You should be able to put a male threaded to female slip adaptor on the bulkhead, then a short pvc pipe, then the slip union. I didn't see any threaded unions in Home Depot the last time I was there.
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Old 06-18-2013
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Thanks guys.

Yeah, it didn't occur to me the outer threads is for the nut...Doh...
I think 1", threaded male adapter will work.

Thanks all...need to get my tank up for some Trophs... :-)
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Old 06-18-2013
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Quote:
Originally Posted by Trophaolic View Post
Hi Everyone,

Started doing plumbing for my tank and kind a stuck. Picture below shows the 3 bulkheads mounted at the bottom of the tank.

The two on the left are 1.75" for outgoing, which uses 1" PVC.
The one on the right is 1.5" for return, which uses 3/4" PVC



The bulkhead shows thread on both outside and inside. If I use female connector (with thread), what size should I buy? I bought 1" female connector and it does not fit. It's too small.

I plan to add union there also in case I need to remove the plumbing for moving later.

Same questions for the return bulkhead.

Plumbing experts, please help...

Thanks all.
So you'll have 2 for the drain and one for the return line?

Drains have long been oversized. I never understood what people wanted them so big. If you decide to downsize at all you can get Bushing that will thread into these two bigger bulkheads. You can also get a Threaded male on one end and female slip on the other. This way you can glue pipe into it and then a Unoin onto that. But with as close as those all are together, you may have to fit the unions at different heights to allow clearence between them. It may work but almost looks to tight for my tastes. But whatever works.

You could even make a merge section for those two large drains for simplification. It would take a large Petro to clog even one of those. Or you could plug one of them as well. Just screw a double thread amle couple into the top of one of them and then cap it.
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Old 06-18-2013
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Originally Posted by Mastiffman View Post
So you'll have 2 for the drain and one for the return line?

Drains have long been oversized. I never understood what people wanted them so big. If you decide to downsize at all you can get Bushing that will thread into these two bigger bulkheads. You can also get a Threaded male on one end and female slip on the other. This way you can glue pipe into it and then a Unoin onto that. But with as close as those all are together, you may have to fit the unions at different heights to allow clearence between them. It may work but almost looks to tight for my tastes. But whatever works.

You could even make a merge section for those two large drains for simplification. It would take a large Petro to clog even one of those. Or you could plug one of them as well. Just screw a double thread amle couple into the top of one of them and then cap it.
Thanks Drew.

Yeah, looks like I'll have to stagger the unions as they are rather close to each other. They came that way from the tank manufacturer...
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Old 06-19-2013
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Thanks Drew.

Yeah, looks like I'll have to stagger the unions as they are rather close to each other. They came that way from the tank manufacturer...
You bet.

How mich flow will this tank have?
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Old 06-19-2013
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Originally Posted by Mastiffman View Post
You bet.

How mich flow will this tank have?
It has 2 overflow holes and 1 return. Overflow is 1.75" bulkhead with 1" PVC. Return is 1.5" bulkhead with 3/4" PVC. I am using an ~900gph at 5ft pump for a home made (DIY) wet dry. I think the 2 overflow should be able to accommodate it at full rate. But will see.

Last edited by Trophaolic; 06-19-2013 at 04:04 AM.
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Old 06-19-2013
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Those drains will easily handle that pump. You could use a 1200gph pump or up to an 1800 gph with a ball valve to throttle it back if it is too much.
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Old 06-20-2013
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Thanks TroPhish.

Here is what I have so far. The second overflow will go to a second intake hole on the DIY Sterilite container. I like the way I can rotate the horizontal PVC to align to the Union. Still need to figure out a way to plumb the return cleanly. Thinking of 3/4" flex tubing. My first time doing these things. Been googling lots of pics...

The sump is a 40gal long that I found for $20 on Craigslist. I am going ghetto down there.. LOL!





Inputs are certainly appreciated...
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