Pre-made SM100 scrubbers

[Spartacus66]

i looked up several 1" bulkheads, but they said they fit 1 3/4" holes. The plans describe it as a 2" hole, though. I admit I've never seen an actual bulkhead in the wild, so I don't know how they're constructed. Is the 2" hold too big? Or will it fit anyway? Sorry for the newb questions

[Floyd R Turbo]

look up bulkheads on Bulk Reef Supply, under "pumps & plumbing" here

http://www.bulkreefsupply.com/store/pro ... k-adapters

Those are ABS bulkheads, the most common and what you want. The hole is drilled larger because you have to insert the threaded part through the hole then screw the ring on the outside, so a hole for a 1" bulkhead like this one

http://www.bulkreefsupply.com/store/pro ... -side.html

has dimension "C" (click the picture) of 1.65" or 42mm which is how big you have to drill the hole. You'll notice that "A" is 2.67" because the flange spreads out. This is the part you have to shave about 1/3" off each side to make it fit in between the panes on the inside. You'll have to trim the rubber gasket also.

Make sense?

[Spartacus66]

Perfect sense! Thanks for your help! And I hadn't run across that website yet, so thanks for the link. BTW, Floyd, your promotion and discussion of ATS on aquarium advice forum is what convinced me to make one. I appreciate your advocacy of them

[Floyd R Turbo]

No problem. I used to be a mentor on AA but gave it up, too much else going on (outside of forums!!)

[nickq]

look up bulkheads on Bulk Reef Supply, under "pumps & plumbing" here

http://www.bulkreefsupply.com/store/pro ... k-adapters

Those are ABS bulkheads, the most common and what you want. The hole is drilled larger because you have to insert the threaded part through the hole then screw the ring on the outside, so a hole for a 1" bulkhead like this one

http://www.bulkreefsupply.com/store/pro ... -side.html

has dimension "C" (click the picture) of 1.65" or 42mm which is how big you have to drill the hole. You'll notice that "A" is 2.67" because the flange spreads out. This is the part you have to shave about 1/3" off each side to make it fit in between the panes on the inside. You'll have to trim the rubber gasket also.

Make sense?

Sorry I'm confused about this. I ordered the 1" bulkhead fitting (from the US) but I don't get it ops:
The one I have is called "1" Bulkhead slip x thread" as per the link above.
Unfortunately it has arrived without the rubber gasket so I have to wait longer anyway, but take a look at the picture:

There is still some thread on the inside, are you supposed to cut this? What size pipe is this intended for as none of the dimensions are 1".
I've never used a bulkhead fitting before

Am I supposed to get some sort of female end to screw the drain pipe onto the end?

Thanks,
Nick.

[Floyd R Turbo]

oops on the gasket, that sucks!

The inside threading is for a standard imperical (sp?) sized pipe. So if you ordered a 1" bulkhead then the inside threading is the female end of a male/female connection. If you wanted to hard-pipe to that, you would want a male-to-slip adapter then you solvent weld to the adapter. If you want vinyl flex hose then you get a thread-to-barb adapter.

Where are you located? This bulkhead is likely in english measurements, I don't know if plumbing comes in metric sizes in other countries. That may be your issue??

[nickq]

I am in the UK but I ordered this from the US here: http://www.ebay.co.uk/itm/270736376200? ... 652wt_1163
Perhaps I should find a UK version instead, problem is I can't seem to find one with such a large flange and the acrylic manufacturer has already cut the 2inch hole, I'm picking up the acrylic tomorrow.
I might have to cut a smaller hole in a small square of plastic and gule that over the top instead, but its not ideal.
Thanks.

[Floyd R Turbo]

What pipe sizes do you have in the UK, when you go to a hardware store, are they in english or metric measurements?

[nickq]

English, 1 inch is translated as 25mm which is of course smaller than the US 1 inch.
But I'm not sure if I'm going to use hard or flex yet.
The SM100 copy is going to sit on this shelf above the tank, which is 7 inches from the lid of the tank:
You can see the screen holder pipe on top, that is made with 25mm pipe and a metric union with hosetail.

[Bigi]

As above depends what you want to put on the end of it, the internal diameter is 25mm right?

http://www.coralculture.co.uk/shop/index.php?cPath=157 will have what you need, it can get a little confusing though as they use outside diameter.

so http://www.coralculture.co.uk/shop/prod ... cts_id=693 would fit the internal threads giving a 1" solvent weld socket to which you can just use 1" pipe or add http://www.coralculture.co.uk/shop/prod ... ts_id=3712 for flexible.

Hope that makes sense.