I had continuing problems with my stock bilge pump so I called Guzzler and bought a better set of valves from them called duck bill valves. I have not had an issue in years and the pump primes itself every time.

:: No bilge pump can beat a scared crewmember with a
:: bucket.
::
:: :: After thinking about it some more, I realized we ended
:: :: up buying a new pump, because the old one was pretty
:: :: shot. We were very happy that we could find the same
:: :: make and model. The covering where the mechanism
:: :: daylights in the cockpit was slightly different, but it
:: :: worked out okay. We tested it by putting the hose in
:: :: bucket of water, but didn't have to prime it.
:: ::
:: :: :: Does it work pretty well. I rebuilt my bilge pump, but
:: :: :: to get it to work I nearly always have to pull the hose
:: :: :: out of the bilge and pour water into it to prime it to
:: :: :: get it started???
:: :: ::
:: :: :: :: We were able to get parts at Svendsen's in Alameda. Let
:: :: :: :: me know if you need more info.