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Subject Topic: Comet tap sucking in air after use?! Post Reply Post New Topic
22/5/2017 at 7:07pm
 Location: Leicestershire
 Outfit: VW T4 camper
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Hello,

I have a very basic water set up in my VW T4 consisting of an underslung tank, with a Whale inline pump between it, and my microswitched Comet Novo tap. The microswitch turns the pump on and off.

Recently, after using the tap, about 10-15 seconds later there is an air gurgling noise - I checked and I can feel that air is being *sucked* in to the tap. This stops after a few seconds but it means that the water in the pipe leading to my tap must have dropped as when I turn the tap on again, I now get a second or two pause before water comes out of the tap. Previously this would have been instantaneous.

I've tried emptying the system and refilling but its still the same. I'm wondering what the most likely explanation for this change in behaviour could be?

At the end of the day I'm not unduly concerned as its all still working but any insight appreciated.

Thanks!




22/5/2017 at 8:10pm
 Location: West country
 Outfit: Mondeo
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Non return valve faulty or small pipe leak maybe.


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22/5/2017 at 10:46pm
 Location: Leicestershire
 Outfit: VW T4 camper
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Thanks for the reply. I don't seem to have a non return valve fitted or at least I can't see one between the whale pump and my tap.

I have had a good look around for leaks but have so far not found any.

Could it be the seal inside the tap? Or is that immaterial?


23/5/2017 at 10:35pm
 Location: Devon
 Outfit: Dreamer(Rapido) D.55 select Plus
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Guess if the tap doesn't seal fully when closed the water in pipe would drop in level by gravity, only recovering when the pump is switched on again. This would give the symptoms you have. (Doesn't happen in normal household supplies as the pressure is always there.)

If fault has only just started occurring it could even dirt trapped in the tap/washer mechanism?

Hope this helps!

-------------
The older I get the better I used to be.


24/5/2017 at 10:22pm
 Location: Leicestershire
 Outfit: VW T4 camper
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Thanks iggycamper, that is pretty much what i am thinking at the minute. I have ordered some o-rings and hope to get the tap apart at some point in the next few days.

Fingers crossed I find a defective o-ring then problem solved! :)



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