How to build a quick disconect
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Old 10-31-2012, 05:57 PM   #1
Curt_914
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How to build a quick disconect


Ok guys I am posting up my version on how to build a quick disconect using common supplies from home depot or lowes. so here we go;

I built these about 5 years ago and will be makeing another set soon for another project the supplies you will need are as follows:

1- roll teflon tape
2- Pvc Threaded Ball Valves ( I used 3/4" for these I think )
2- Pvc Threaded Nipples ( Found by the sprinklers)
2- Pvc Thread Inserts ( Again I believe these were 3/4" Also by sprinklers)
1- Pvc Threaded Union

The ball valves and the threaded union were the most expensive at around $4-6 each, everything else about 4 bucks. So total cost around 20 bucks.

Picture of supplies:


everything dry fit:


And the joy of threads! you can attach it directly to your Pumps!


I hope this helps for some of you. Yes it is a little cheaper then the Eheim quick Disconects but it is more versitle.

Curt
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Old 10-31-2012, 07:30 PM   #2
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Nice job, thanks for posting the DIY with pics.
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Old 11-01-2012, 02:48 AM   #3
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take some picture of the disconnect parts
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Old 11-01-2012, 02:49 PM   #4
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The union (the bulging part between the ball valves) unscrews without having to turn either pipe. Comes apart quite easily. Goes back together easily, as long as there is no strain on the pipe forcing the union to come together at an awkward angle.
There may be some minor dripping. The pipe and union between the ball valves may still have some water when both ball valves are off. The picture shows the ball valves in the on position.
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Old 11-01-2012, 05:37 PM   #5
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Have you had any problems with the unions sealing after several disconnects? That looks like the only possible problem with this. Very simple, easy, effective DIY setup. This could be added under a sink, in the water supply line, for a hose connection for water changes. It could be even smaller for that use.

One other possible problem: those PVC valves have become hard to fully close after a few years when I use them. I don't know why that is.
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Old 11-01-2012, 05:56 PM   #6
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Hoppy I have found it is just sediment in the water that makes the valves hard to turn over time. I also have that problem with brass valves.

The main thing to watch out for is the o ring in the union valve which can be lost over time, main cause for leaking. But some food safe silicone lube usually does the trick of holding it in place. The one thing with this type of set up is yes it is much eaiser to deal with if everything is in a straight line for conect and disconect, and there is a small amount of leakage when disconected. But I get leakage with my eheim disconects as well.

You guys are welcome for the pics and this DIY. Will post another one I am working on in the future.

Curt
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Old 11-01-2012, 06:54 PM   #7
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Has anyone tried the quick disconnects in the garden hose area of the home depot/lowes stores?

for example:
http://www.homedepot.com/buy/melnor-...l#.UJLFf8XoS9E
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Old 11-01-2012, 07:47 PM   #8
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Quote:
Originally Posted by jbrady33 View Post
Has anyone tried the quick disconnects in the garden hose area of the home depot/lowes stores?

for example:
http://www.homedepot.com/buy/melnor-...l#.UJLFf8XoS9E
Yes, I have BUT you will still need ball valves because there are no integral shut off valves in the sections which just means the water continues to flow out of the male adapter when disconnected from the female half.

They are a small diameter so they will restrict water flow and any debris can get stuck in the female half of the Q.D. and won't shut the water off when disconnected.

The only place I use them is on the drain valves on my Eheim 2260/62 filters so I can drain the filter before removing it from inside the stand.
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Old 11-02-2012, 02:00 AM   #9
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I use them (unions) for my sumps, and for my pond. I do not take them apart very often, maybe once a year, if that. The only problem I have is if there is any strain on the pipes so they are not lined up well. Then it can be a bit of work getting the union back together.

Any disconnect will leak a bit, so this system is not better or worse in that way. Just have a towel handy, just like when you take apart any other plumbing fixture.
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Old 11-02-2012, 04:56 AM   #10
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You can buy zero leakage quick disconnect fittings, but they are expensive. Of course we don't need zero leakage disconnects for aquarium plumbing
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Old 11-02-2012, 05:54 AM   #11
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Quote:
Originally Posted by Hoppy View Post
You can buy zero leakage quick disconnect fittings, but they are expensive. Of course we don't need zero leakage disconnects for aquarium plumbing
Speak for yourself. The corporate server I have living below my 220g tank wouldn't fare well with a non-zero-leakage disconnect!
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Old 11-02-2012, 01:08 PM   #12
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Quote:
Originally Posted by kevmo911 View Post
Speak for yourself. The corporate server I have living below my 220g tank wouldn't fare well with a non-zero-leakage disconnect!


You keep electronics underneath 220 gallons of water? Corporate server no less? Just carpet and floor under my tank gives me pause sometimes.

As an IT guy, aquarium guy, and DIY home repair person (plumbing/electric/carpentry/etc) that sounds like compounding all your chances for problems. Heavy and wet, held together by silicon glue, circulating water through less than bullet-proof plumbing (unless you glued up your own sump plumbing, but then we wouldn't be talking about quick disconnects I think). I know I was surprised that canister filters (mine included) had pretty thin walled tubing with basically push in connectors.

No trying to give you crap, just scares me!
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Old 11-02-2012, 08:03 PM   #13
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Quote:
Originally Posted by jbrady33 View Post


You keep electronics underneath 220 gallons of water? Corporate server no less? Just carpet and floor under my tank gives me pause sometimes.

As an IT guy, aquarium guy, and DIY home repair person (plumbing/electric/carpentry/etc) that sounds like compounding all your chances for problems. Heavy and wet, held together by silicon glue, circulating water through less than bullet-proof plumbing (unless you glued up your own sump plumbing, but then we wouldn't be talking about quick disconnects I think). I know I was surprised that canister filters (mine included) had pretty thin walled tubing with basically push in connectors.

No trying to give you crap, just scares me!
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Old 11-02-2012, 10:45 PM   #14
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Okay, sorry, that was a (very poor) attempt at humor. I agree, keeping fragile stuff or electronics beneath a tank is a bad idea.
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Old 11-02-2012, 10:48 PM   #15
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In fishkeeping there are two groups of people. Those who have spilled large amounts of water and those who will spill large amounts of water at some future time when they least expect it.
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