Nalgene™ Aspirator Vacuum Pumps
By NalgeNalgene™ aspirator vacuum pump made of polypropylene with polyethylene tubing. Attaches to faucet for maximum free air pumping capacity of 11.5 liters per minute at a water flow rate of 6.5 liters per minute. Operates efficiently with water pressures as low as 7.5 psig (0.517 bar) for minimum water consumption. Ultimate vacuum: 28-1/2" (723.9mm) Hg. Supplied with integral check valve, 3/8" NPT connecting thread, and 4-3/4" length of tubing for insertion in discharge end.