Moyno 6M4 Progressing Cavity Pump. Type: SDR. Frame: 6M4. S/N: LS53144. Maximum rpm: 1050. Capacity: 11.33 gpm @ 87 psi. Motor, 10 hp, 1735 rpm, 230/460 V, 27/13.5 amps, 3 phase. Pulley Ratio: 3 to 1. Current final rpm: 578. The Moyno progressing cavity pump is a single screw rotary pump. The pumping action is created by the single helical rotor rolling eccentrically in the double threaded helix of the stator. Inlet: (1) 3 in. dia. port with a 7-1/2 in. dia. and (4) 1/2 in. dia. thru-holes at a center-to-center distance of 6 in. Outlets: (1) 2-1/2 in. threaded fitting (female). Overall dimensions: 75 in. L x 41 in. W x 27 in. H.