Chyba znalazlem odpowiedz na moje watpliwosci.
I only need an electrical pump to prime my mechanical pump. Can I still pull fuel through a Facet pump when it is off?
It depends on the specific pump. Some Facet pumps are equipped with a positive shut-off valve (also known as an anti-siphon valve), which prevents fuel from being siphoned through the pump. None of the pumps in the Posi-Flo line have a positive shut-off valve, so any of those would be a safe bet for this type of installation.
If you also want to be able to run the car on the electrical pump, then you need to check your chosen pump.
Info znalazlem tu:
https://www.pegasusautoracing.com/do...ocID=TECH00150