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Old 30 July 2016, 20:37   #1
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Country: USA
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getting rid of the hiss

When i unscrew the cap on two out of the the three air valves on my Zodiac pro RIB, I hear a slight hiss escaping through the green plastic pins. I'd like to make the hiss stop. I say this, but I feel its important to add that once the gasket caps are sprayed with a shot of DW-40, and then screwed tight over the valves, I don't need to fill up the boat with air more than once or twice a season.

The third pin leaked air so effusively all of last summer, that I had to pump the boat at least once a week. But one day last fall, mostly out of frustration, I started twisting the pin first one way, then the other way. Suddenly, lo and behold, it stopped hissing entirely. I'm not sure which direction I twisted it.

Do these pins inside the valves actually seat themselves by getting screwed down tightly into the valve? If so, what direction do I turn it, clockwise or counterclockwise?

If my thesis about screwing down the pins to make them stop hissing is actually incorrect, I am curious how the rest of you RIB owners get your pins to stop hissing? I simply can't believe that Zodiac sells a boat with an air seal that is so faulty that there's no way to stop it from leaking, at least a little. Any advice is much appreciated.
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Old 31 July 2016, 03:23   #2
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Is this of any use to you....?

Bombard & Zodiac valves
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Old 31 July 2016, 07:39   #3
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If it's a Pro boat then it's likely to be Zodiac recessed valves. Valve was updated for 2009 boats on. From memory, the green valve cog is turned clockwise to seal. Remember the valve cap adds complete air tightness when tightened. Not unusual for the boat to deflate slightly over time due to temperature fluctuations. If your concerned over valves, try soap water test to ensure its airtight.

Zodiac and Bombard RIB Dinghy Inflatable Boat Valves
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Old 31 July 2016, 16:41   #4
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Country: UK - England
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Make: Zodiac pro 500
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Hi
I have a Zodiac Pro 4.8 2008 and yes the valves will hiss air through the green valve but when you put the top cover on this should stop.
I have owned this boat since 2012 and it's always been fine. I did research the hiss and found out this is normal on my model.
Hope this helps.
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Old 31 July 2016, 18:12   #5
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Put the caps on and ignore it.
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Old 31 July 2016, 18:30   #6
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thanks for the tips. My zodiac pro is from 2009. I didn't know you could push the pin in and turn it 90 degrees clockwise. I'll try it tomorrow.
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Old 01 August 2016, 01:58   #7
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In hot weather I take the caps off and use them as pressure relief valves
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