Welch 202703 Digital Self-Cleaning Dry Vacuum System, 2-torr, 230 VAC, Cole-Parmer (CAT#: STEM-DS-0656-LC)

The Welch Self-Cleaning Dry Vacuum System manufactured by Cole-Parmer is suitable for use with rotary evaporator. This two-stage flexible diaphragm pump is resistant to corrosive gases and the accumulation of solid residues or liquids on the diaphragm. The glass inlet separator captures the liquid and particles in the steam before the steam enters the pump. When pumping a large amount of steam, you only need to adjust the gas ballast or exhaust switch to suppress the condensation of steam inside the pump head.

Gas Ballast:Yes
Wetted Parts:PTFE, Kalrez®
Free-Air Capacity (CFM):1.1
Free-Air Capacity (LPM):31.1
Free-Air Capacity (LPH):1866
Max Flow Rate (CFM):0.95
Max Flow Rate (Liters/min):27
Max Vacuum (in Hg):29.85
Max Vacuum (mbar):2.4
Max Vacuum (mm Hg):1.8
Max Vacuum (torr):1.8
Port Size:1/4" hose barb
Max Temperature (° F):104
Max Temperature (° C):40
Duty Cycle:Continuous
Power (VAC):230
Power (amps):4
Power (Hz):50
Height (in):11.5
Length (in):11.875
Height (cm):29.21
Length (cm):30.16
Height (mm):292.1
Length (mm):301.6
Motor hp:1/5

Oil-free vacuum system
Self-cleaning purge for long diaphragm life
Integral vacuum regulator
Contains inlet and outlet separators

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