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Welch® Self-Cleaning Vacuum Systems
$4,625
$4,263
and up
| Image | SKU | Description | Maximum Vacuum | Ultimate Pressure | Free Air Displacement | Type | Electrical | Quantity | Price | Add to Cart |
|---|---|---|---|---|---|---|---|---|---|---|
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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 |
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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 |
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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 |
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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 |
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Description
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 |
