Todd,
Since the bubbles disappear and the circulating liquid becomes clear after prolonged circulation of a small volume of gasoline , I think the bubbles were not gasoline vapor since the system is still circulating gasoline. When
I worked as a chemist, we would remove air from solvents used in high pressure liquid chromatography by passing the solvent through a vacuum filtration apparatus which also entalis a high to low pressure transition. This removed the dissolved air more quickly
and thoroughly than sparging the solvent with helium.
Steve Boese
RV6A, 1986 13B NA, RD1A, EC2
From: Rotary motors in aircraft [flyrotary@lancaironline.net] On Behalf Of Todd Bartrim [bartrim@gmail.com]
Sent: Tuesday, June 08, 2010 11:38 PM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: high/low pressure pumps question
Steve;
I believe the bubbles you are seeing in the line is very likely the evaporative emissions...