Description
VRT-440
Republic offers the VRT series of dry-running rotary vane vacuum pumps and are ideally suited for oil-free applications. They are single stage, air-cooled and direct driven for continuous operation. The design is one of the most reliable and simplest vacuum pumps available. These rugged pumps are simple to install and easy to service and maintain. The smaller pumps come
with a motor integrated, while the larger pumps are available with or without motor. These pumps have a displacement ranging from 5 to 176 CFM (10 to 300 m3/hr) and a maximum vacuum of 150 torr.
The VRT series is used in a variety of industries such as vacuum lifting, woodworking, environmental applications electronics, packaging, conveying, robotics, medical vacuum/central vacuum, and printing.
| PERFORMANCE | ||||||
|---|---|---|---|---|---|---|
| Displacement | Noise Level | |||||
| Model | (CFM/m3/hr) | Ultimate Vacuum Max | (dB) | Weight | ||
| (In. Hg./Torr/mbar) | (lb/kg) | |||||
| 50 Hz | 60 Hz | 50 Hz | 60 Hz | |||
| 410 | 5/10 | 7/12 | 25.5/112.5/150 | 60 | 62 | 33.1/15 |
| 416 | 9/16 | 11/19 | 25.5/112.5/150 | 61 | 64 | 48.5/22 |
| 425 | 14/25 | 17/30 | 25.5/112.5/150 | 62 | 67 | 61.7/28 |
| 440 | 23/40 | 28/48 | 25.5/112.5/150 | 67 | 72 | 86.0/39 |
| WORKING PRINCIPLE | |
|---|---|
| Rotary vane pumps consist of a cylindrical housing (1), eccentrically positioned rotor (2), and numerous free-moving vanes (4). The vanes are placed in the slots of the rotor (3) and, as the rotor turns, the centrifugal force throws the vanes against the cylindrical wall, creating a chamber between the rotor and the cylinder (7). The chamber volume changes as the rotor turns. From the inlet port (5), the chamber volume enlarges, and then decreases towards the outlet port (6). As air enters the inlet port (5) and the chamber enlarges (7), the vanes create a vacuum. As the air is pushed through the chamber and it becomes compressed, pressure is produced at the outlet port (6). |
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