Mark,
The isolators I found available off the shelf were quite large so I made my own.
The following link should take you to a source of a Mallory part# 650-29806 isolator kit from Jegs.
Steve
From: Rotary motors in aircraft [flyrotary@lancaironline.net] On Behalf Of Mark Steitle [msteitle@gmail.com]
Sent: Monday, June 07, 2010 6:19 AM
To: Rotary motors in aircraft
Subject: [FlyRotary] Re: Fuel system designs
Steve,
Can you provide a source and p/n for the isolator?
Mark S.