Model : RB80 ,RB60 ,RB50 Discharging Diameter (mm) :80 ,60 ,50 Delivery life (m) : 12 ,10 ,6 Flow (m3/h) :40 ,30 ,18 Length of hose: 4-10m Matched power: 5.5-6.5 hp 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?