Welch 2581B-50 WOB-L Laboratory Dry Oil-Free Piston Vacuum Pump, 3.5 CFM/100 LPM, 5 torr, 115 VAC
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Welch Vacuum Part Number 2581B-50
These Welch 2581B-50 laboratory duty dry oil-free dual stage diaphragm vacuum pumps are perfect for many common laboratory vacuum applications. The 2581B-50 produces and ultimate vacuum pressure of 5 Torr 29.8 inches of Hg and includes a vacuum regulator with a built in vacuum gauge which is simple to adjust & monitor the vacuum level. The 2581B-50 pump includes an inlet water trap with float ball that rises to seal off the vacuum pump in case of accidental ingestion of water and a muffler which quiets the pump and filters discharge air. These Welch 2581B-50 piston pumps operate on 1-Phase 110 to 120 VAC at 50/60 Hz and are designed for use with dry or aqueous vapor applications only. A user's instruction manual in PDF format is available for downloaded below.
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