Welch DryFastTM PTFE oil-free diaphragm vacuum pumps enable precise vacuum control for organic evaporations with exclusive Advanced Vapor Management (AVM). Oil-Free, portable, chemical resistant, 2-head diaphragm design simplifies maintenance, no more frequent and costly oil change. Constructed with solid PTFE heads, PTFE diaphragms, Kalrez valves and utilizing fluorinated plastics on all wetted surfaces, these economical DryFastTM vacuum pumps are perfect for tough lab applications. These pumps are made in USA with one year warranty from Welch.

http://welchvacuum.com/products/dryfast-ultra-2042

Features

Advanced Vapor Management (AVM) for precise setting of vacuum level
Vacuum to 2 torr (2.6 mbar, 266 Pa)
Strips DMF fast
Chemically resistant
No oil changes, no cold trap required for water/alcohol solutions
Virtually maintenance-free solution for laboratory environment
Smaller footprint than oil pump saves lab space
Designed to work with rotary evaporators

Specifications

Electrical requirements	110 Volts 60Hz single phase 1/5 HP, 150 watts
Application	Rotary evaporation/distillation (low volatility solvents < 160oC B.P., ~2 liter), centrifugal concentrators, vacuum ovens (mid-size), pumping harsh vapors & gases.
Pumping rate	1.2 cfm
Ult. vacuum pressure	2 torr / 2.7 mbar
Maximum vacuum	29.85 in. Hg
Intake (vacuum connection)	3/8" hose barb
Exhaust	1/4" hose barb
Adjustable vac./gas ballast	Yes
Pump dimensions (LxWxH)	13.8 x 6.8 x 8.8"
Shipping dimensions (LxWxH)	21 x 14 x 15"
Pump weight	21.25 Lb
Shipping weight	25 Lb
Certification	CSA
Manual	Click here to download