Welch pumps

Product featuresOne-head WOB-L-style piston pump with intake and exhaust catch jars for use in vacuum or pressure applications with gel dryers, concentrators, and rotary evaporators46 liter per minute (LPM) free air displacement with vacuum to 60 TorrManually adjustable vacuum and pressure levels with gaugesOil-free pump for operation without oil misting...
Specifications & DescriptionWetted Parts PTFE, PerfluoroelastomerFree-Air Capacity (CFM)1.2Free-Air Capacity (LPM)34Free-Air Capacity (LPH)2040Max Flow Rate (CFM)0.88Max Flow Rate (Liters/min)25Max Vacuum (in Hg)28.3Max Vacuum (mbar)54.9Max Vacuum (mm Hg)41.2Max Vacuum (torr)41.2Port Size 1/4" hose barbMax Temperature (° F)104Max Temperature (° C)40Duty Cycle ContinuousPower (VAC)115Power (amps)1.25Power (Hz)60Motor Type Permanent split capacitorHeight (in)8.3Length (in)12Height (cm)21.08Length...
Specifications & DescriptionHead ConfigurationDual HeadsWetted PartsPTFE, Kalrez®Free-Air Capacity (CFM)2.5Free-Air Capacity (LPM)70.8Free-Air Capacity (LPH)4248Max Flow Rate (CFM)2.45Max Flow Rate (Liters/min)70Max Vacuum (in Hg)28.5Max Vacuum (mbar)48.1Max Vacuum (mm Hg)36.1Max Vacuum (torr)36.1Noise Level (dB)53Port Size1/4" hose barbMax Temperature (° F)104Max Temperature (° C)40Duty CycleContinuousPower (VAC)115Power (amps)2.65Power (Hz)60Height (in)8.875Length (in)13.875Height (cm)22.54Length (cm)35.24Height (mm)225.4Length (mm)352.4Motor...
Product Details Chemical Resistant Oil-Free Tuneable Vacuum Suggested Applications Concentrator - Gel Dryer Combination Rotary Evaporator Vacuum Concentrator Vacuum Oven Welch DryFastTM PTFE 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. Choose...
The Welch 2052 is a full chemical-resistant, 4-head, oil-free dry diaphragm vacuum pump with all-PTFE contact surfaces and deep vacuum capability. Oil-Free, portable, full chemical-resistant, means less maintenance and no more frequent and costly oil change, or cross contamination. Specifications  Electrical requirements  110V or 220V 50/60Hz single phase 0.53 HP, 390 watts...
Product Details High contamination tolerance Ultimate vacuum <0.001 Torr Low RPM for long service life Suggested Applications Rotary Evaporator Vacuum Oven DuoSeal Vacuum Pumps are known for their ruggedness world-wide. These pumps have large oil reservoirs to dilute contaminants. Low pump rpm to reduces friction and wear while minimizing reservoir...
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