The HyVac® 2 vacuum pump is a larger, reliable, 2-stage pump rated at 25 Liter/minute free air displacement and an ultimate vacuum of 0.1 micron. Reaches 6-12 militors of mercury with gas ballast open to atmosphere and, with gas ballast closed, recovers to original vacuum in 2-5 minutes. Gas ballast enables rapid purging of pump oil. Complete with exhaust dome and baffle to condense oil spray and prevent smoking. Supplied with ¼ HP, 115V, 60Hz motor, pulleys and v-belt, oil level sight gauge, draincock and nipples. 3-wire cord and plug with integral switch, belt guard and gas ballast included.