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Valve that allows air though but not a liquid?

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Old Dec 1, 2009 | 02:27 PM
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Thumbs up Valve that allows air though but not a liquid?

Hi guys.

Need a valve that allows air through but stops liquids from passing through please.

i know there's Air by-pass valves for cars but they're massive as i'm after something a lot smaller
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Old Dec 1, 2009 | 02:32 PM
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anus?

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Old Dec 1, 2009 | 02:39 PM
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kind off but yours allows ***** in and out and i dont want that ;P
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Old Dec 1, 2009 | 02:56 PM
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Old Dec 1, 2009 | 03:16 PM
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For what application?

You can get air traps which are fitted to compressed air systems that allow condensation to escape but then seal against the air.

Steve
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Old Dec 1, 2009 | 03:16 PM
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An air bypass valve on a car lets air bypass the throttle butterfly, nothing to do with liquids
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Old Dec 1, 2009 | 03:41 PM
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Drain Traps & Ancillaries : Spirax Sarco UK

Steve
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Old Dec 1, 2009 | 03:45 PM
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Originally Posted by Steve vRS
For what application?

You can get air traps which are fitted to compressed air systems that allow condensation to escape but then seal against the air.

Steve
designing a childrens toy. bit like a water pistol but thats all i can say

so something small and cheap

Last edited by Ray_li; Dec 1, 2009 at 03:53 PM.
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Old Dec 1, 2009 | 03:46 PM
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Originally Posted by Steve vRS
kind of but smaller and something thats gonna cost pennies
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Old Dec 1, 2009 | 03:53 PM
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Sorry, I do high hazard oil, gas and chemicals!

Steve
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Old Dec 1, 2009 | 03:54 PM
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Gore-tex but thats fudging it
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Old Dec 1, 2009 | 03:55 PM
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Originally Posted by Steve vRS
Sorry, I do high hazard oil, gas and chemicals!

Steve
I design hobby grade toys
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Old Dec 1, 2009 | 03:57 PM
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Bet you have more fun!!
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Old Dec 1, 2009 | 04:55 PM
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..

Last edited by Butty; Dec 2, 2009 at 08:33 AM.
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Old Dec 1, 2009 | 05:17 PM
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Just buy a cheap moisture/water trap for a compressor, they keep the oil and water from the tank away from the air supply.
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Old Dec 2, 2009 | 08:28 AM
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this looks about right
Moisture Trap - BLICK art materials
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Old Dec 2, 2009 | 10:36 AM
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I would have thought that a valve that can do that can't be cheap.

Les
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Old Dec 2, 2009 | 11:29 AM
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I'll design one then

Patent and dersert island here I come
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Old Mar 16, 2014 | 05:39 AM
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Ray, did you ever find a solution? I'm designing a tool and need the same tech.
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Old Mar 16, 2014 | 06:26 AM
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Project got cancelled
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Old Mar 16, 2014 | 09:28 AM
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Thread from teh dead!

Anyhoo; Automatic bleeder/vent. Found on most central heating boilers. http://www.screwfix.com/p/bottle-air-vent-15mm/34359

http://www.screwfix.com/p/aladdin-hv...FWLHtAodRjMA3w

They often fail and leak after 5-6 years though.


Or a compressed air water trap - you can get them with automatic drains.

Last edited by ALi-B; Mar 16, 2014 at 09:33 AM.
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Old Mar 16, 2014 | 11:47 AM
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Originally Posted by BlkKnight
anus?

+1 for anus...the most intelligent organ in your body, can tell the difference between solid, liquid and gas BEFORE it passes through!
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Old Mar 16, 2014 | 05:24 PM
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Originally Posted by alcazar
+1 for anus...the most intelligent organ in your body, can tell the difference between solid, liquid and gas BEFORE it passes through!
Lol,

Follow through alert lol



Mart
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