Looking for One Good Pump.

[vasily]

I just opened one of the RV water pumps I bouight from the 32nd Parallel in 1991. Good flow, no leaks, but kinda noisy.
Any recommendations for a 12V, reversible, high flow and high pressure (50 psi plus) pump for a large, closed ballast tank?
Jim

[Guest]

That sort of pressure is going to require a positive displacement pump. Centrifugal pumps can go to about 3 bar in single stage form. Kavan do a nice geared pump that can flow about 1.8 litres a minute.