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  1. Max Rockatansky

    Sizing a water system pressure pump

    I’m running a system on my 40’ cat with two heads, aft shower, galley up. No accumulator. Vinyl lines. Pump is a Jabsco demand pump about 4gal/min, 40psi IIRC. No issues. I turn the switch off when not in use; I have this fear I’ll develop a leak and the damn thing will pump every drop out my...