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 Post subject: Hpa valve leak
PostPosted: Thu Aug 12, 2021 3:41 pm 
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Joined: Mon May 06, 2019 4:07 pm
Posts: 515
My hpa valve is leaking when I try to fill it from the twist port were you open it...how do you fix it? Tank still fills and seals but just leaks from the valve when open and trying to fill


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 Post subject: Re: Hpa valve leak
PostPosted: Thu Aug 12, 2021 4:49 pm 
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Joined: Mon Feb 11, 2013 12:46 am
Posts: 5054
sound like an o-ring
you will need to dismantle it, I know its obvious but make sure tank is empty :wink:

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 Post subject: Re: Hpa valve leak
PostPosted: Thu Aug 12, 2021 6:12 pm 
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Joined: Mon May 06, 2019 4:07 pm
Posts: 515
Regulator disassembled noticed this broken rubber material...doesnt feel like a o ring...maybe some kind of rubber sealant?
Can anyone help?
The rubber material came out of the brass piece in picture one...


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 Post subject: Re: Hpa valve leak
PostPosted: Thu Aug 12, 2021 8:14 pm 
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Joined: Mon Feb 11, 2013 12:46 am
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when you took it apart were was the rubber sitting
#1 or #2... hard to tell from the rubber debris in the background
but looks like a flat type ring style washer


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 Post subject: Re: Hpa valve leak
PostPosted: Thu Aug 12, 2021 10:19 pm 
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Joined: Mon May 06, 2019 4:07 pm
Posts: 515
Hey it was in arrow #1


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 Post subject: Re: Hpa valve leak
PostPosted: Thu Aug 12, 2021 11:27 pm 
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so it was leaking from the gauge ?

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 Post subject: Re: Hpa valve leak
PostPosted: Fri Aug 13, 2021 9:23 am 
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Posts: 515
it was origianaly leaking from like the twist part of the valve but after taking it apart and reasembling it is leaking from the fill niple.


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 Post subject: Re: Hpa valve leak
PostPosted: Fri Aug 13, 2021 10:30 am 
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fill nipple has a very small o-ring
you can disable the nipple and replace it
also if it was leaking from the shut off valve there is a small
peace of practice at the end just make sure its not very badly
scared up sometimes you can remove it and flip it over see pic


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 Post subject: Re: Hpa valve leak
PostPosted: Fri Aug 13, 2021 1:28 pm 
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So it leaks from the gauge as its filling then when u close the nozzle it leaks from the nipple if I super tighten the nozzle by hand it stops the leak from the nipple to the point you can only hear it if you put your ear over the nipple....I didnt see any o ring on the nipple were does it go?


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 Post subject: Re: Hpa valve leak
PostPosted: Fri Aug 13, 2021 1:44 pm 
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Joined: Mon May 06, 2019 4:07 pm
Posts: 515
Quick question which spot does the FILL NIPPLE go? Picture #1 or picture #2? Picture #3 is burst valve and fill nipple
I bealive one port is for the burst disk maybe I put them backwards?


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 Post subject: Re: Hpa valve leak
PostPosted: Fri Aug 13, 2021 4:32 pm 
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Joined: Fri Jan 22, 2010 1:17 pm
Posts: 2879
Location: Kingston, ON
I have seen Foster nipples leak in the threads. If the thread is a NPT (tapered) then make sure to use teflon tape or other thread sealant on it. To test HPA for leaks I use a party balloon, slip it or wrap the inlet over the fitting enclosing the join you want to test and make sure the air is all squeezed out. You can also use a bubbly liquid like Snoop or make your own with dish soap and water and apply carefully to the joint, look for bubbles. The one-way check valve in the Foster also has an o-ring, it's the one Ace is talking about. They give out from time to time. I just replace the Foster when mine go, I buy them from Aliexpress or Ebay.


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 Post subject: Re: Hpa valve leak
PostPosted: Fri Aug 13, 2021 9:06 pm 
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 Post subject: Re: Hpa valve leak
PostPosted: Sat Aug 14, 2021 12:28 am 
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Dukemeister my fill nipple is not tapered and does not have a stem....were would the o ring go...also does anyone know from the pictures were I screw the fill nipple back in?


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 Post subject: Re: Hpa valve leak
PostPosted: Sat Aug 14, 2021 10:58 am 
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Figured out obvously were the fill nipple goes but I dont get why mine doesnt have a stem or a spot for a oring...


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 Post subject: Re: Hpa valve leak
PostPosted: Sun Aug 15, 2021 4:52 am 
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Joined: Thu Oct 13, 2005 4:20 pm
Posts: 2087
Location: Spruce Grove AB
Must be a check valve in the valve body somewhere.


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