Dekker AquaSeal full-recovery single-stage water-sealed liquid ring vacuum pump system including the following: Dekker model DV0020DB-MA3-SGL single-stage liquid ring vacuum pump with 1.5 HP energy efficient TEFC motor (230/460v), fabricated steel base frame, discharge separator-reservoir (full recovery), sight gauge, level switch, drain valve, seal-fluid make-up solenoid valve, Y-strainer, seal fluid isolation valve, shell and tube heat exchanger (based on 50F cooling water - 10F approach), flow control valve, compound gauge, temperature gauge, inlet check valve, and vacuum gauge. A vacuum relief valve is strongly recommended and sold separately.