Model NVE
(1) Since this pump is a water ring type, there are no problems if the intake air contains steam or water droplets.(2) Good durability with both-end support bearings.
(3) Easy operation and maintenance are possible because there are no mechanical contact parts other than the bearings and gland.
(4) Low-noise pump thanks to its silence design.
(5) For low and high vacuum pressure types, a fixed port type and check ball type are used respectively so that the shaft power becomes smaller within the operating range.
■Standard Specifications
| Model | Low Vacuum pressure type | High Vacuum pressure type | |
| Liquid | Air and Various gas | Air and Various gas | |
| Temperature | －15～50℃ | －15～50℃ | |
|
MAX. vacuum pressure (at rated condition) |
0 ～ -86.7kPa ｛-650㎜Hg｝ | More than -86.7kPa｛-650㎜Hg｝, | |
| Up to -93.3kPa｛-700㎜Hg｝ | |||
| MAX. Vacuum pressure | －96kPa｛－720㎜Hg｝ | ー98.7kPa｛－740㎜Hg｝ | |
| （Feed water at 15℃） | （Feed water at 15℃）*1 | ||
| Construction | System | Water ring type | Water ring type |
| Port type | Port cylinder | Port cylinder | |
| with check valve(ball type) | |||
| Shaft seal | Gland packing | Gland packing | |
| Bearing | Ball bearing or self-aligning roller bearing*2 | Ball bearing or self-aligning roller bearing*2 | |
|
Bearing lubrication |
Grease | Grease | |
| Flange | JIS10K FF | JIS10K FF | |
| Materials | Casing | FC200 | FC200 |
| Rotor | FCD450－10 | FCD450－10 | |
| Shaft | S45C | S45C | |
| Shaft sleeve | SUS403 | SUS403 | |
| Casing gasket | Liquid packing (Three-bond No.1211) | Liquid packing (Three-bond No.1211) | |
| Drive system | Motor-coupled or belt-driven | Motor-coupled or belt-driven | |