The RV Supreme Series is internally grounded, four-chamber diaphragm on-demand pumps with the performance characteristics to match the needs of a typical vessel with a shower, water heater and up to three faucets. It provides up to 3 gpm (11.3 lpm), and all are fitted with a built-in pulsation dampening by-pass to control unwanted cycling and noise. We include quick-connect fittings for ease of pump installation. The new 43-series pumps provide exceptional flow and consistent water pressure to easily handle the demand of multiple outlets at one time. When onboard appliances are activated, the built-in bypass design re-circulates back pressure into the pump to reduce cycling resulting in a quieter and smoother flow.