How can pressure/flow be kept as high as possible for the pumps?

Select the largest possible pipe diameter. Despite inevitable bottlenecks en route, it would be detrimental to choose a smaller pipe diameter overall, and will also result in significant loss of pressure. Example: the pressure loss of 1/2" pipes is 5 times higher than that of 3/4" pipes. 2. The more bottlenecks, the higher the loss of pressure. You should therefore attempt to reduce the number of bottlenecks. 3. Bottlenecks at the beginning of the pipe ultimately slow down the water far more than bottlenecks at the end of the pipe! In fact, widening the cross-section immediately before a lawn sprinkler results in hardly any measurable improvement and therefore does not need to be taken into account; however, bottlenecks at the beginning of a pipe (e.g. small taps, narrow pipe cross-sections in the home) impact more strongly on the water throughput. Electronic Pump 5000/3 - 700 W (1413) Electronic Pump 850 E (1415) Garden Pump 3000/4 Jet (1422) Electronic Pump 6000/4 e - 1000 W (1425) Garden Pump 3000/4 (1426) Garden Pump 4000/4 (1428) Garden Pump 4000/4 Jet (1429) Garden Pump 4000/5 (1431) Garden Pump 4000/5 Jet (1432) Garden Pump 5000/4 (1433) Garden Pump 4000/4 Inox Multi 3 (1434) Garden Pump 4000/5 Inox (1435) Garden Pump 5000/6 Inox (1437) Garden Pump 7000/5 Inox Multi 4 (1438) Garden Pump 3000/3 Jet (1442) Electronic Pressure Pump 3000/4 el. Plus (1480) Classic Electronic Pressure Pump 4000/4 electronic plus (1481) Electronic Pressure Pump 4000/4 el. Plus (1482) Classic Electronic Pressure Pump 4000/5 electronic plus (1483) Electronic Pressure Pump 4000/5 el. Plus (1484) Electronic Pressure Pump 5000/4i ep (1485) Electronic Pressure Pump 5000/4 el. Plus (1486) Electronic Pressure Pump 5000/5 Inox i (1487) Electronic Pressure Pump 5000/6 Inox e.p. (1488) Garden Pump 3000/3 Jet (1704) Garden Pump 3000/4 Jet (1706) Classic Garden Pump 3000/4 (1707) Garden Pump 3500/4 Jet (1708) Classic Garden Pump 3500/4 (1709) Garden Pump Set (1710) Garden Pump Set (1712) Garden Pump Set (1714) Garden Pump Set (1717) Garden Pump Set (1719) Comfort Garden Pump 4000/5 (1732) Comfort Garden Pump 5000/5 (1734) Premium Garden Pump 6000/6 inox (1736) Electronic Pressure Pump 4000/4 LCD (1763) Comfort Electronic Pressure Pump 4000/5 LCD (1765) Comfort Electronic Pressure Pump 5000/5 LCD (1767) Premium Electronic Pressure Pump 6000/5 inox LCD (1769) Classic Pressure Tank Unit 3000/4 (1770) Classic Pressure Tank Unit 4000/5 (1772) Comfort Pressure Tank Unit 5000/5 (1774) Premium Pressure Tank Unit 5000/5 inox (1775) Pressure Tank Unit 3000/4 eco (1753) Pressure Tank Unit 4000/5 eco (1754) Pressure Tank Unit 5000/5 eco (1755) Pressure Tank Unit 5000/5 eco inox (1756) These models have a built-in filter, built-in check valve, dry-running safety mechanism, automatic operation, two outputs, one of which can be swivelled. In addition, the LCD models feature an info display that shows functions and faults (flow indicator, pressure indicator, indication of the type of fault). Electronic Pressure Pump 4000/5 LCD (1765)