I bought a couple from Depco in Fl. They have a website listing there phone number and they service and sell these pumps and are great to work with. I know this guys would give you really good information. The told me Jabsco is the best pump and worth every cent even if they are more than Simer. Get what you pay for. I bought the pumps that are reversable, so I can't speak experience, but Depco can.