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<P>I have the same engines and have been working fine with YS check valve. </P>
<P>Vince<BR></P>
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<DIV><SPAN class=639522317-30062004><FONT face=Arial color=#0000ff size=2>Hi Nat,</FONT></SPAN></DIV>
<DIV><SPAN class=639522317-30062004><FONT face=Arial color=#0000ff size=2>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. </FONT></SPAN></DIV>
<DIV><SPAN class=639522317-30062004><FONT face=Arial color=#0000ff size=2>Regards,</FONT></SPAN></DIV>
<DIV><SPAN class=639522317-30062004><FONT face=Arial color=#0000ff size=2>Dean</FONT> </SPAN></DIV>
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<DIV class=OutlookMessageHeader dir=ltr align=left><FONT face=Tahoma size=2>-----Original Message-----<BR><B>From:</B> discussion-request@nsrca.org [mailto:discussion-request@nsrca.org]<B>On Behalf Of </B>Nat Penton<BR><B>Sent:</B> Wednesday, June 30, 2004 1:08 PM<BR><B>To:</B> discussion@nsrca.org<BR><B>Subject:</B> YS checkvalve<BR><BR></FONT></DIV>
<DIV><FONT face=Arial size=2>The YS checkvalve will readily open with almost zero differential pressure. Going the other way it takes <U>about</U> 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</FONT></DIV></BLOCKQUOTE></BLOCKQUOTE></body></html>