Push to Connect Connectors - The Planted Tank Forum
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post #1 of 11 (permalink) Old 08-08-2020, 09:34 AM Thread Starter
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Push to Connect Connectors

Hello:

I see these connectors are becoming quite common, but are they trustworthy. I have used these types of connectors in the past for water (RO/DI systems) and they appear reliable, but not sure about Co2 at say 30 p.s.i. Can they really be leakproof?. Is there a required tubing that must be used?
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post #2 of 11 (permalink) Old 08-08-2020, 03:35 PM
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The fitting you pictured looks like nickel plated brass.
I use these with CO2 in an industrial environment up to 100 PSI
We use polyurethane tubing with these, greater flexability.
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post #3 of 11 (permalink) Old 08-10-2020, 06:56 PM Thread Starter
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I would gather that since they have been used in industry for some time they work as intended, only issue I can see is that the correct tubing must be used.

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post #4 of 11 (permalink) Old 08-26-2020, 05:14 PM
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That particular metal body connector you are showing has been used in industrial pneumatic systems for the past 50 years at much higher pressures than 30 PSI and they are VERY reliable as well as proven! In industrial systems those connectors are used with a poly tubing, not vinyl tubing. I have used them with vinyl tubing without a problem but poly tubing is very cheap and what the connector is designed to be used with.
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post #5 of 11 (permalink) Old 08-26-2020, 08:15 PM Thread Starter
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Thanks for the reply, if I have it right the poly tubing is much stiffer, typically the colored tubing found in RO/DI water filtration setups

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post #6 of 11 (permalink) Old 08-26-2020, 09:45 PM
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Quote:
Originally Posted by Bryan_ View Post
Thanks for the reply, if I have it right the poly tubing is much stiffer, typically the colored tubing found in RO/DI water filtration setups
Exactly!
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post #7 of 11 (permalink) Old 08-26-2020, 10:36 PM
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These are used in industrial settings where leaks can mean bad news, and they work fine. That being said buy quality push to connects, not made in china evilbay specials.

Im using SMC branded push to connects on my co2 system at 20psi and good clippard tubing with no problems.
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post #8 of 11 (permalink) Old 08-27-2020, 04:04 AM Thread Starter
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Im using SMC branded push to connects on my co2 system at 20psi and good clippard tubing with no problems.
Which clippard tubing are you using?

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post #9 of 11 (permalink) Old 08-27-2020, 04:50 AM
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Im using the heavy polyurethane 1/4od and 1/8 id. URH1-0804-CLT
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post #10 of 11 (permalink) Old 08-27-2020, 07:32 AM
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the 1/4 OD or 6mm tubing with these push and pull quick connectors are industrial grade, normally 150 to 250 psi working pressure rating.
you can jam a 1/4 OD hose into 6mm quick connector but not a 6mm hose into a 1/4 OD quick connector, because the later one will not seal well, and possible leak.

avoid normal aquarium 6mm vinyl air hose, if use these air hose with quick connector and there is leak, 99% of the time the problem is the air hose...


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post #11 of 11 (permalink) Old 08-27-2020, 01:43 PM
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These are not ldiot proof if used incorrectly.

You need to use a specific tool to cut the tube. Search for Pneumatic tube cutter and you will find it easily. its inexpensive. This is used to ensure the tube is cut with a perfectly flat surface before putting it in the connector. If there is even a slight angle you will get leaks. The connector will have a "O" ring inside that will form the seal. An old connector will have a brittle O ring that will fail.So ensure you buy "new" stock.

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