Welch® DryFast Diaphragm Vacuum Pumps

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from $2,080.00 $1,900.00

SKU DESCRIPTION MAXIMUM VACUUM FREE AIR DISPLACEMENT ULTIMATE PRESSURE COMPATIBLE TUBING ELECTRICAL QUANTITY PRICE ADD TO CART
2034B-01 Model 2034 Welch DryFast Diaphragm Pump 29.6 in Hg 0.9 cfm (25 L/min) 9 Torr (12 mbarr) 0.25 in 115 V, 60 Hz 1 Each
$2,080
$1,900
2037B-01 Model 2037 Welch DryFast Diaphragm Pump 28.5 in Hg 1.8 cfm (50 L/min) 35 Torr (47 mbar) 0.25 in 115 V, 60 Hz 1 Each
$2,300
$2,101
2044B-01 Model 2044 Welch DryFast Diaphragm Pump 29.6 in Hg 1.2 cfm (35 L/min) 9 Torr (12 mbarr) 0.25 in 115 V, 60 Hz 1 Each
$2,425
$2,216
2047B-01 Model 2047 Welch DryFast Diaphragm Pump 28.5 in Hg 2.5 cfm (70 L/min) 35 Torr (47 mbar) 0.25 in 115 V, 60 Hz 1 Each
$2,710
$2,476

Welch DryFast™ 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. Economical DryFast™ vacuum pumps are perfect for tough lab applications.

Features

  • Chemical Resistant
  • Oil-Free
  • Tuneable Vacuum

Applications

  • Aspiration
  • Replace House Vacuum
  • Rotary Evaporator
  • Solvent Degas

Specifications

Model Number 2034 2044 2037 2047
Applications Rotary Evaporation/Distillation (medium volatility solvents <110oC B.P., volume ~ 1 liter), Vacuum ovens - small, pumping harsh vapors & gases Rotary Evaporation/Distillation (medium volatility solvents <110oC B.P., volume ~ 2 liter), Centrigugal Concentrator (e.g. DNA pelleting), Vacuum ovens - small, pumping harsh vapors & gases Vacuum Filtration (to 6 funnels), Vacuum ovens (2 to 4.5 ft3), harsh vapors & gases Vacuum Filtration (to 6 funnel manifold), Vacuum ovens (2 to 4.5 ft3), Aspiration, Lab Automation,Pumping harsh vapors & gases
Type Laboratory Vacuum Pump Laboratory Vacuum Pump Laboratory Vacuum Pump Laboratory Vacuum Pump
Free Air Displacement cfm (l/min.) @60Hz 0.9 (25) 1.2 (35) 1.8 (50) 2.5 (70)
Free Air Displacement m3/hr (l/min.) @50Hz 1.25 (21) 1.75 (29) 2.5 (42) 3.5 (58)
Ultimate Pressure 9 (12) 9 (12) 35 (47) 35 (47)
Maximum Vacuum 29.6 29.6 28.5 28.5
Motor Horsepower (watts) 1/5 (150) 1/5 (150) 1/5 (150) 1/5 (150)
Adjustable Vac. / Gas Ballast Yes Yes Yes Yes
Tubing Needed 1/4 (7) 1/4 (7) 1/4 (7) 1/4 (7)
Intake Thread NPT M14 (1/8) M14 (1/8) M14 (1/8) M14 (1/8)
Overall Dimensions LxWxH in. (cm) 13.8x6.8x8.8 (35.2x7.2x22.3) 13.8x6.8x8.8 (35.2x7.2x22.3) 13.8x6.8x8.8 (35.2x7.2x22.3) 13.8x6.8x8.8 (35.2x7.2x22.3)
Ship Weight 25 (11.3) 25 (11.3) 25 (11.3) 25 (11.3)
Shipping Carton Dimensions LxWxH in. (cm) 21x14x15 (52x35x37) 21x14x15 (52x35x37) 21x14x15 (52x35x37) 21x14x15 (52x35x37)
Adjustable Vacuum Knob Knob Knob Knob