Dan Heath wrote: >>It should not be a problem with the mechanical if fuel can be pumped thru the mechanical if it stops working. The Facet electrical will flow thru.<<
There are some Facet pumps that have what Facet calls "positive shutoff" (PSO), which besides being an anti-siphon valve, shuts the fuel off when no power is applied, I'm pretty sure. The 40106 (NPT) and 40108 (flared fitting) that Aircraft Spruce and Wicks sell do not have the antisiphon valve (PSO), but some Facet pumps do. See http://www.facet-purolator.com/cube-fuel-pumps.php for other options, but the two aforementioned pumps will work fine. See more on how I rigged up two of these to be redundant, at http://www.n56ml.com/fuel/, and it works perfectly. If you already have a pump, the part number is stamped on one of the two mounting legs. It took me about 15 years to notice this, so it's not obvious if you aren't really looking hard to find it. Mark Langford ML at N56ML.com website at http://www.N56ML.com --------------------------------------------------------
