Travaini liquid ring vacuum pump single stage, type TRVA 50-220/C/RA with 1" flanged inlet/outlet. Unit is 10 Hp, 1750 rpm, 230/460 v, 3-phase, service liquid flow of 4.4, minimum suction pressure of 100, capacity of 68 to 158 cfm. Manufactured in 1995, serial number 14888.