ORIGINAL: DarZeelon
David,
According to Perry, when using a VP-30, the tank must be vented and not pressurized.
I don't know how that will be done, risking water ingestion on a boat...
The Perry pump will work with muffler pressure. But when I did that (I missed that part in the instructions) the pump only lasted a little over a year. However I don't see how using muffler pressure is going to prevent water to enter the tank, most mufflers have about a 3/8" hole for water to enter them and thus the tank.