Marcus, Good that others have chimed in, I think they're more on track as I was. I filled an extra hole near the sink in our boat that was formerly for my hot and cold pressurized water, with a soap dispenser. I removed that cumbersome plumbing system of copper tubing and vinyl hoses and put in its place a Fynspray hand pump as seen here in an eBay offering 330602151915 in one enlarged hole and used the other for a commercial soap dispenser pretty much like this
http://www.airdelights.com/B-8221.html. I might add that I bought the Fynspray pump used at Minney's for $15.00 and I'll replace it with a new one when I hit the lotto. Glyn Judson, Ericson Independence 31, hull #55, Marina del Rey, CA