Ludge pump easily handles water with 15% solids and particles up to 25mm in size. Suitable for seawater and certain corrosive chemicals. It operates on ejector principle so no motor of deaphram pump to wear out. Exhaust muffler reduces sound level. Technically equivalent to Chicago Pneumatic CP-0077 sludge pump. Technical Details Model # RMT 77 Technically equivalent to CP 77 of Chicago Pneumatic Weight 69 kg 152 lb Length 600 mm 23 12” Max suction lift 6.1 m Air Consumption 40 ls 85 cfm Max head 53 m Discharge outlet 62.5