YS checkvalve

[Rcmaster199 at aol.com]

True enough Dean. Except a vent placed in a cumbersome location makes it hard 
to attach your overflow tubing onto, when filling the tank. Vent fitting in 
close proximity to the fill fitting makes that much easier. I just don't
 care to overflow fuel all over the ground. It's a matter of convenience 
and/or preference

MattK

> Subj:RE: YS checkvalve 
> Date:6/30/2004 1:27:40 PM Eastern Daylight Time
> From:d.pappas at kodeos.com
> Reply-to:discussion at nsrca.org
> To:discussion at nsrca.org
> Sent from the Internet 
> 
> 
> 
> Hi Nat,
> I used the YS check valve with both my O.S. 140 RX and Mintor, and never had 
> a dribble issue. At the table I tend to dribble, but that's another issue! 
> One thing that works well for many is to run the tank vent to a place well 
> behind the tank. If the end of the vent line is both behind and below the tank 
> when upright, then there will be no siphoning problem in flight, or on the 
> ground. 
> Regards,
>     Dean 
> 
> >> -----Original Message-----
>> From: discussion-request at nsrca.org [mailto:discussion-request at nsrca.org]On 
>> Behalf Of Nat Penton
>> Sent: Wednesday, June 30, 2004 1:08 PM
>> To: discussion at nsrca.org
>> Subject: YS checkvalve
>> 
>> 
>> The YS checkvalve will readily open with almost zero differential pressure. 
>> Going the other way it takes about two psi to get a seal. At a lower 
>> pressure there will be some dribble. Is there a better solution for the tank vent 
>> line?    Nat Penton
>> 
> 

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