+1 888 608-7511
Need help finding a standard?
Help Desk
The HEI Performance Standards for Liquid Ring Vacuum Pumps and Compressors (5th Edition) is the primary industry document for defining how liquid ring machines are tested, rated, and applied.
Unlike standard centrifugal pumps or dry vacuum systems, liquid ring pumps use a rotating "ring" of sealant liquid (usually water) to create a vacuum. Because their performance is heavily dependent on the temperature and properties of this sealant, the HEI standards are essential for ensuring that a pump's advertised capacity matches its real-world performance.
Failed to load document history.
| Publish Date | Document Id | Type | View |
|---|
