Accurate, precise control of vacuum up to 300 mm Hg from a centrally piped source. Vacuum levels are indicated on a color-coded, glow-in-the-dark 2 gauge. Slimmer line saves space, yet model is more dura- ble than ever. Over-sized knob for easy adjustment and operation. Vacuum limiting valve limits vacuum at 320 mm Hg to prevent tissue destruction. Weight bearing brass post prevents the case from cracking. Maintenance is easy and unit can be cleaned by flushing with cold sterilant.