'Syncra Pond PumpsSyncra Pond Pumps are grounded high performance pumps which ensure high energy savings, quiet operation, ergonomic design, resistance to harsh conditions, and reliability. Innovative technology makes these pumps ideal for ponds, indoor and outdoor fountains, and all submersible and inline applications which require high performance and total silence. Syncra Silent are equipped with a synchronous motor and an advanced rotor which makes them efficient and silent. Synchronous motors have the following advantages over non-synchronous motors:? Speed is independent of the load, providing an adequate field current is applied.? Accurate control in speed and position using open loop controls is possible.Their power factor can be adjusted to unity by using a proper field current relative to the load. A "capacitive" power factor, (current phase leads voltage phase), can be obtained by increasing this current slightly, which can help achieve a better power factor correction.Fountain Heads Models 0.5-1.0 Model 1.5 Models 2.0-3.0 Models 3.5 - 5.0 1-way diverter valveWaterbellWaterlilySingle daisyDouble daisy 1-way diverter valve WaterbellDaisy 3 st.Waterlily 1-way diverter valveWaterbellDaisy 3 st.WaterlilyPetunia 2-way diverter valveWaterbellWaterlilyPetuniaIrisFoam JetDaisy 2 st.Daisy 3 st. Features:? synchronous motor and advanced rotor? grounded Pond Pump? 4 feet shut off? CE & UL listed? increased electrical efficiency? higher head pressure per watt? higher flow per watt? much smoother rotation? less heat transfer? fewer vibrations? 20'''' cord? 3-year or 5-year extended warranty with online registration and purchase from an authorized dealer8 models from185gph to 1321gphSyncra 0.5 DW Pump: 185gph, 1/2" female inlet, & outlet, 4'''' max head, 1.73psiSyncra 1.0 DW Pump: 251gph, 1/2" female inlet, & outlet, 5'''' max head, 2.17psiSyncra 1.5 DW Pump: 35gph, 1/2" female inlet, & outlet, 6'''' max head, 2.60psiSyncra 2.0 DW Pump: 568gph, 3/4" female inlet, 3/4" female outlet, 7.9'''' max head, 2.82psiSyncra 3.0 DW Pump: 714gph, 3/4" female inlet, 3/4" female outlet, 9.9'''' max head, 4.30psiSyncra 3.5 DW Pump: 660gph, 1" female inlet, 3/4" female outlet, 12.5'''' max head, 5.43psiSyncra 4.0 DW Pump: 952gph, 1" female inlet, 3/4" female outlet, 12.6'''' max head, 5.43psiSyncra 5.0 DW Pump: 1321gph, 1" female inlet, 3/4" female outlet, 12.6'''' max head, 5.47psi '''