DirecTorr Vacuum Pumps
These Welch Directorr Vacuum Pumps offer steady, non-fluctuating vacuum to 0.4 µ Hg. Units operate at sound levels less than 60dBA and easily fit on most lab benches. Anti-suck-back valve protection ensures vacuum integrity. Pumps accept standard hose or ISO flange connectors.
Viton® O-rings and seals resist chemical attack; reliable seal design tolerates high-vapor loads. Modular doweled construction ensures continuous peak performance and easy maintenance. Made in USA.
Key Features
- Ideal for providing vacuum to centrifugal concentrators, vacuum ovens, freeze dryers, SEMs or transfer lines
- Exceptionally quiet and portable
- 12-month warranty
| Specifications for Welch Vacuum Direct Drive High-Vacuum Pumps | ||
|---|---|---|
| 1/4 HP Pump | 3/4 HP Pump | |
| Free Air Displacement @ 60 Hz: | 1.8 cfm (51 L/min.) | 7.7 cfm (218 L/min.) |
| Max. Vacuum: | 2 x 10-3 Torr | 3 x 10-4 Torr |
| Pump Speed @ 60 Hz: | 3450 | 1725 |
| Inlet Tubing: | 7/16" I.D. | 13/16" I.D. |
| Sound Level: | 52 dB(A) | 54 dB(A) |
| Dimensions (LxWxH): | 14.1" x 5.1" x 8.4" | 20.5" x 7.1" x 10.7" |
| Power Requirements: | 115V, 60Hz | 115V, 60Hz |
| Ship. Wt.: | 26 lb. | 68 lb. |
| Item | Product Description | Unit of Measure | Price | Purchase | |
|---|---|---|---|---|---|
|
EF20961F
8920A
|
3/4 HP pump | Each |
$4,256.95
|