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Re: Saddle tank fuel diagram
To be clear, the factory NL2 option on my truck has 2 3 port valves stacked so that the return from the pump is routed to the same tank supplying fuel. One vavle routes supply fuel the other route the return. They are stacked and mechanically sync'd. This eliminates an over fill situation when the aux tank is selected when the main tank is full. And correct, you need a 4 port valve for 3 tanks.
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