RB series of flexible shaft pumps are mini centrifugal pumps of single type; they are wi- dely used for pumping and draining in const- ruction building sites, tunnels, culverts,water reservoir, etc, also for wastewater discharging in industry, irrigation on farmland and so on, They are driven by diesel engines and gaso- line engines; minitypes can also use vibrator motor as their power, They have the features that convenient to operate,large flow quantity and high delivery lift Model: Rb80: Discharging dia.: 80mm Delivery life: 12m Flow: 40 m? Weight: 18.5kg/6m Length of hose: 4 - 10m Matched power: 5.5 - 6.5HP Rb60: Discharging dia.: 60mm Delivery life: 10m Flow: 130 m? Weight: 17.3kg/6m Length of hose: 4 - 10m Matched power: 5.5hp-6.5hp