Edit; My post seems to be way off line. Sorry. For what ever reason I could not get out of the Multi Quote section and I could not get below the quote.
Yes, and No. Things do get a little more involved then this. It depends on the type of OF one is running. A HOB for instance, can only flow as much as the U tube can handle. That comes from the diameter of the U tube, and from the pressure difference between the two levels of water. That's why the larger HOBs will run 2 U tubes. By putting in a larger bulkhead in a HOB, you wont be able to flow more water. You will have less noise, or a chance of less noise from said larger bulkhead. Yes, the final say in what can flow through a bulkhead is the bulkhead diameter or the feed pipe to the bulkhead.......however. Placing a larger pipe, or hose on the opposite side of the bulkhead is a good idea and is not a waste. Again, you will be able to run a much more quiet drain that way.
A drain such as the one in question, a Stockman or a Durso type drain. Relies on air to remain silent. hence the hole in the top, or the air line going inside of it to "tune" the drain. Water coats the walls of the pipe and has a inner core of air. That's why bigger is better. Even after the bulkhead. A good example of this is a drain setup that has a few tight turns in it. A larger drain pipe will allow it to run more quietly.
On the Herbie or BeanAnimals design. A full siphon is employed to make the drain run silent. It also allows for more flow through a smaller diameter pipe since you don't want the air in it. You can turn or twist all you like (Within reason on Beans. He runs an open channel pipe) and run totally silent, as long as the restriction of the pipe size/length will flow the required amount.
I'm not trying to call you out, or be an a$$. That's just how I read your post and I think some confusion "could" come from it.
I'm sorry Flower, I didn't mean to get off topic or, nor did I want to confuse you in any way. Just disregard my post for the time being.
Quote:
Originally Posted by
2Quills http:///forum/thread/380517/flower-s-sump-fuge-build/200#post_3313903
Sorry, I wasn't actually recommending that you should take apart your drain to check it. I was merely trying to point out that when in refference to bulkheads that Slip or Thread style refers to the inside of the bulkhead. I'm glad that you joined in this thread as any and everyones opinions are certainly welcome. Our goal as a team is to come up with the best design possible to give Flower a really kick a$$ set-up.
All bulkheads that are used in this hobby are basically threaded on the ouside for installation. I would however, like to mention for Flower's benefit or anyone else who might be following alongs benefit that simply adding a larger hose on the drain won't actually do anything to increase the amount of flow that your overflow is designed to handle. The best way to look at this would be to think of your bulkhead as a bottle neck. If you have a 3/4" and a 1" drain line then you're still only going to get the amount of water draining through there that the 3/4" bulkhead will allow to pass. I would suggest against installing the hose on the outside of the bulkead, if you intend to use a hose clamp you should be careful since those Sch. 40 bulkheads are easy to crack. The slip style is design for installing a pvp pipe in the bottom of them so that you can run a pvc drain or attatch the proper fittings in order to use vinyl.
The best and probably the only way to increase the output of your overflow would be to simply enlarge the drain opening on the overflow in order to step up to the next biggest size bulkhead. Assuming that the back box on the overlow had the room to do so. It would be simple to do and would be a great way to insure that you're actually achieving the maximum amount of drainage that your overflow will give you. You'd have to take into account the actual size of the overflow as well, and how much water the U shaped channel will allow to pass. But I think you could just to the next biggest size bulkhead with no probs. At the very least it's a little extra piece of mind.
