Nalgene* Hand-Operated Vacuum Pumps

Self-lubricating pumps quickly attain and hold vacuum of 25 in. (635 mm) Hg. Adjustable trigger release works without disconnecting pumps from the line. Smaller sizes have pumping rates of 15 cc/stroke and 3 psig (0.21 bar) positive pressure at the exhaust port. Larger sizes have rates of 36 cc/stroke and 7 psig (0.48 bar) positive pressure at the exhaust port. Removable cover on exhaust port. Gauge monitors vacuum in centimeters and inches of mercury. Nozzle fits standard 1/4 in. ID tubing. Supplied with two feet of Nalgene 180 clear plastic tubing.