Ro-Flo serves broad and varied niches. We do not profess to be experts in other types of compression technologies, but feel some comparative information of a general sort might be helpful to our visitors.
In the links below we have presented what we hope you will find to be some straightforward, objective information about some of the leading compression technologies we see being considered for similar applications to Ro-Flo’s.
| Rotary Vane | Liquid Ring | Flooded Screw | Lobe (Blower) | Centrifugal Blower | |
|---|---|---|---|---|---|
| Inlet Vacuum | ~ 28 inches Hg | ~ 28 inches Hg | Requires minimum ∆P | ~ 16 inches Hg | ~ 16 inches Hg |
| Max Discharge Pressure (psig) | 200 | 200+ | 200+ | ~ 20-25 | ~ 20-15 |
| Max Pressure Ratio | 7:1 | 4:1 | 10:1 | 3:1 | 2:1 |
| Flow Variation Over Life of Unit | Low | Low | High | Med | Low |
| Process Gas Contamination | Low | High | High | Low | Low |
| Power Requirement | Low | High | Med | Low | Low |
| Coolant Flow | Low | High | Med | N/A | N/A |
| Acid Tolerance | Standard Materials | Requires Stainless | Requires Stainless | Requires Stainless | Requires Stainless |
| Ease of Repair | On site/hand tools | Send to shop | Send to shop | Send to shop | Send to shop |
| CAPEX | $$ | $$$ | $$ | $$ | $ |
| Process Dew Point Concern? | No | Yes | Yes | No | No |