Standard Duty Pump, 2-Head, 60 Torr, 83 Lpm, 230v, Each

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Specifications economicaloil freeadjustable vacuum / pressureuse these affordable oil-free pumps to provide convenient vacuum throughout the lab. Welch wob-l piston pumps provide adjustable vacuum for filtration, spe, vacuum ovens, and more. These pumps are an efficient alternative to water aspirators. Select vacuum range 100 to 5 torr; flow range 22 to 201 l/min. For use with dry or aqueous vapor applications only.Includes vacuum and pressure regulators and gauges - simple monitoring and adjustment of vacuum level and delivery pressure. Inlet water trap - float ball rises to seal off pump from accidental ingestion of water. Muffler quiets pump and filters discharge air.1-Head models – ideal for filtering and spe. Select low flow model for 1-2 filter funnels; higher flow model for up to 6 filter funnels. Can also be used as pressure pumps.2-Head models – use low vacuum / high flow for filter manifolds or lab automation; select high vacuum (e.G. 5 Torr) / high flow for vacuum ovens.Thomas no.Modelstagesfree air dis. (L/min)max. Vac. (In. Hg)tubing id (in.)Weight (lbs.)7893N65/ 1233k772522one2226.01/4157893N67/ 1233k782534one3427.21/4157893N69/1233k79/1233k802545one4527.61/418.51233K81/ 1233k82/1233k83/1233k842565one8827.63/821.57893N85/1233k852585one20127.63/827.57893N902560two4529.63/816.57893N952580two9929.63/822.5Thomas no.Modelstagesfree air disp. (L/min.)Max vac. (In. Hg)tubing id (in.)Weight (lbs.)7893N40/ 1233k672010one12.725.51/48.37893N42/ 1233k662012one22261/4187893n46/1233k68/ 1233k69/1233k702015one4526.71/4227893N44/ 1233k722022two2229.61/4221234X10/ 1233k712021b01one2229.851/49.11234X11/ 1233k752030b01one3229.61/49.11234X12/ 1233k762031b01one3229.851/49.1