Plumbing help....please!! - The Planted Tank Forum
 
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post #1 of 5 (permalink) Old 02-16-2009, 01:55 PM Thread Starter
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Plumbing help....please!!

OK, Ive been going back and forth planning my plumbing for a 180g tank.
Here are my thoughts so far, please give me your opinion:

Outlet for Eheim 2260:
1" Sch 80 double threaded bulkhead, http://www.savko.com/partlist.asp?pgid=2 > followed by a single union ball valve, http://www.savko.com/partlist.asp?pgid=1. > connect to eheim 2260 > co2 reactor, (maybe on a bypass?) > same bulkhead and ball valve and back to the tank.

Outlet for Eheim 2026:
3/4" Sch 80 double threaded bulkhead > single union ball valve > eheim 2026 > 2 300W hydor heaters on bypasses > single union ball valve > 3/4" bulkhead.

Thinking of doing extra 2 holes with 3/4" bulkheads and single union ball valves for a closed venturi loop with an eheim compact 2000+ pump, http://www.aquatics-online.co.uk/cat...heim-pumps.asp

Should I be using single union ball valves next to the bulkheads or true union ball valves? Im thinking these valves wont be disconnected on the bulkhead side, so single union valves should be enaugh? Is there a reason for using true union ball valves by the bulkhead?

I read somewhere that one should use ball valves 1/2" bigger then the tubing since they reduce the waterflow? That would mean extra reduce junctions to fit the larger ball valves, right?

Sorry about all the queastions, but Ill have to make one big order for all the fittings and shipping to Iceland will not be cheap, so Im trying to get everything right in one order.

If anyone could point me to an inline plumbing guide of some kind I would be very greatful.

If you have any comments or suggestions on the parts I should be ordering please let me know.

Eheim pimp #127.
600 ltr (160g) planted tank. Pressurized CO2, Eheim 2260 & Sacem Marathon 2000, 156W T5.
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post #2 of 5 (permalink) Old 02-16-2009, 06:37 PM
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Ball valves are full flow; they don't reduce flow (just look inside one). Gates valves are a different matter.
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post #3 of 5 (permalink) Old 02-16-2009, 06:47 PM Thread Starter
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OK, great, so ill use 1" ball valve with the 1" bulkhead.

One other question, can a threaded ball valve be connected directly to a threaded bulkhead of the same size or would I need something to connect them? If so, what would I need?

Eheim pimp #127.
600 ltr (160g) planted tank. Pressurized CO2, Eheim 2260 & Sacem Marathon 2000, 156W T5.
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post #4 of 5 (permalink) Old 02-16-2009, 10:03 PM Thread Starter
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Ive been looking at more fittings and was wondering if this would work?

Eheim pimp #127.
600 ltr (160g) planted tank. Pressurized CO2, Eheim 2260 & Sacem Marathon 2000, 156W T5.
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post #5 of 5 (permalink) Old 02-16-2009, 11:11 PM
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I don't think that will work work quite the way you've drawn it. The non-union side of valve will have a female end, either threaded or slip. The male adapter you've drawn looks like it will convert the threaded female side of the bulkhead into a slip female end. To make these fittings work, you'll have to insert a small piece of regular 3/4" PVC to couple these fittings together (assuming the valve is a slip fitting).

Alternatively, if the ball valve had a threaded female end, then I'd simply use a nipple to couple the valve to the bulkhead. Here's an example of a PVC nipple.

Couple other points: A) If you want to economize slightly, there's no problem going to a lighter bulkhead. The schedule 80 is overly heavy duty. B) don't forget a hose clamp to hold the tubing onto the barb.
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