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Aspirator with Check-Valve Connector
Maximum free air pumping capacity: 11.5 L (3 gal)/min, water flow rate 6.5 L (1-3/4 gal)/min. Operates efficiently at pressures as low as 7.5 psi. Supplied with 9.5-mm (3/8") connecting thread and 12-cm (4-3/4") length tubing. Made of polypropylene with polyethylene tubing. Nalge.