*”W/WS” series are classic Interpump triplex plunger pumps widely used on pressure-washer and wash-bay builds; WS models also appear in agricultural spraying catalogs “E1/E2/E3” (Evolution 1/2/3) are compact, higher-speed pumps commonly paired with electric motors or gearboxes for industrial pressure-cleaning packages * Other options are available ranging from 50-500bar (2.5-180L/min) * Utra high pressure pumps are also available.