Sihi Liquid Ring Vacuum Pump. Model: LPHA 65327. S/N: BN 041 02 0. Vacuum capacity: 20 in. Hg @ 245 cfm. Average service liquid flow: 9 gpm (dry/saturated air). Siemens Motor, 20 hp, 1175 rpm, 230/460 V, 52/26 amps, 60 Hz. The SIHI "LPH" series liquid ring vacuum pump is reliable pump that can be used in a variety of applications. The vacuum pumps have one moving part, the impeller and shaft assembly, and no internal metal to metal contact. Sihi pumps offer operational safety, entrained liquid handling, long economical life, low vibration & noise level, low starting torque, and construction flexibility. Inlets/outlets: (2) 2-1/2 in. dia. 125 lb. ANSI flanges. Overall dimensions: 73-1/2 in. L x 26 in. W x 28-1/4 in. H.