DryFast Diaphragm Pump 2047

Product Details
  • Chemical Resistant
  • Oil-Free
  • Tuneable Vacuum

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 from seven dry PTFE vacuum pump models with flows up to 70 L / min and adjustable vacuum down to 2 Torr. Economical DryFastTM vacuum pumps are perfect for tough lab applications.

Product Family Specifications
Model Number 2034 2044 2037 2047
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) 13.8×6.8×8.8 (35.2×7.2×22.3) 13.8×6.8×8.8 (35.2×7.2×22.3) 13.8×6.8×8.8 (35.2×7.2×22.3) 13.8×6.8×8.8 (35.2×7.2×22.3)
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

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