Beach Russ Rotary Vacuum Pump. Model: 4D. S/N: 88340-15. Beach-Russ pumps are designed for high performance efficiency and simplicity for constant and reliable use. U.S. Motor: 3 hp, 1730 rpm, final rpm: 384.4, 230/460 V, 8.7/4.35 amps, 60 Hz, 3 phase. Inlets: (1) 1-1/2 in. threaded female. Outlets: (1) 1-1/2 in. threaded male, (1) ½ in. threaded male. Overall dimensions: 35 in. L x 21 in. W x 54 in. H.