Welch® Self-Cleaning Vacuum Systems

  • Free Shipping

from $3,515.00 $3,212.00

SKU DESCRIPTION MAXIMUM VACUUM ULTIMATE PRESSURE FREE AIR DISPLACEMENT TYPE ELECTRICAL QUANTITY PRICE ADD TO CART
variant 202501 Welch Self-Cleaning Vacuum System 29.6 in Hg 9 Torr (12 mbar) 1.2 cfm (35 L/min) with Analog gauge 115V, 60Hz 1 Each
$3,515
$3,212
variant 202601 Welch Self-Cleaning Vacuum System 29.85 in Hg 2 Torr (2.7 mbar) 1.2 cfm (35 L/min) with Analog gauge 115V, 60Hz 1 Each
$4,125
$3,769
variant 202701 Welch Self-Cleaning Vacuum System 29.85 in Hg 2 Torr (2.7 mbar) 1.2 cfm (35 L/min) with Digital gauge 115V, 60Hz 1 Each
$4,400
$4,020
variant 202801 Welch Self-Cleaning Vacuum System 29.85 in Hg 2 Torr (2.7 mbar) 1.2 cfm (35 L/min) Programmable, with digital gauge 115V, 60Hz 1 Each
$5,565
$4,611

Complete oil-free dry vacuum systems for rotary evaporators and concentrators. Corrosion-resistant PTFE diaphragm vacuum pump systems enable superior control and efficiency for each evaporation. Provides controlled solvent stripping in flasks up to 5 L. Use 9 torr Model 2025 for solvents with atmospheric B.P. <120°C. Includes analog gauge and vacuum regulation. Inlet and exhaust separators protect pump and lab atmosphere.

Key Features

  • Automatic Self-cleaning purge maintains efficiency, extends diaphragm life
  • Free air displacement: 35 L/min (1.2 CFM)
  • Incremental ballast switch enables fast response to bumping / foaming

Suggested Applications

  • Concentrator - Gel Dryer Combination
  • Rotary Evaporator

Specifications

Model Number 2025 2027 2028 2026
Applications Controlled vacuum for Rotary evaporators, Centrifugal concentrators, and other evaporative processes. Controlled vacuum for Rotary evaporators, Centrifugal concentrators, and other evaporative processes. Controlled vacuum for Rotary evaporators, Centrifugal concentrators, and other evaporative processes. Controlled vacuum for Rotary evaporators, Centrifugal concentrators, and other evaporative processes.
Type Laboratory Vacuum Pumps Laboratory Vacuum Pumps Laboratory Vacuum Pumps Laboratory Vacuum Pumps
Free Air Displacement m3/hr (l/min.) @50Hz 1.2(34) 1.2(35) 1.2(35) 1.2(35)
Ultimate Pressure 1.7(28) 1.8(29) 1.8(29) 1.8(29)
Max Pressure PSIG (pascal) 29.5 29.85 29.85 29.85
Adjustable Vac. / Gas Ballast 1/5 1/5 1/5 1/5
Tubing Needed Yes Yes No Yes
Intake Thread NPT 1/4 1/4 1/4 1/4
ISO Exhaust / Intake Flange 3/8 3/8 3/8 3/8
Overall Dimensions LxWxH in. (cm) 13.6x12x11.3 (34.5x30.5x28.7) 13.6x12x11.3 (34.5x30.5x28.7) 13.6x12x11.3 (34.5x30.5x28.7) 13.6x12x11.3 (34.5x30.5x28.7)
Ship Weight 36(16.3) 36(16.3) 36(16.3) 36(16.3)
Intake Catch Jar Yes Yes Yes Yes
Exhaust Catch Jar Yes Yes Yes Yes