The following products have limited availability and/or have been replaced by newer models. This information is provided for reference purposes.
Liquid Ring Vacuum Pumps: Two Stage (D Series)
Two stage pumps perform well on deep vacuum applications, such as cheese processing, evaporation, sterilization, and extrusion venting. Available in a wide variety of sizes, all models feature a stainless steel shaft, bronze impellers and mechanical seals. Internal surfaces are coated with a chemically applied organic material for long term corrosion resistance.
Spec Sheet
| Model | 25D | 27D | 210D | 215D | 220D | 220HD | 225D |
| Part # | 263566 | 263567 | 263568 | 263569 | 263570 | 263571 | 263572 |
| Motor HP | 5 | 7.5 | 10 | 15 | 20 | 20 | 25 |
| Motor RPM | 1750 | 1750 | 1750 | 1750 | 1750 | 1750 | 1750 |
| Inlet/Discharge Connections | 1 1/2" | 1 1/2" | 1 1/2" | 2" | 2" | 2" | 2 1/2" |
| dB(A), Average 60 Hz | 67 | 67 | 67 | 68 | 68 | 68 | 69 |
| Weight (lb.) | 166 | 188 | 209 | 287 | 309 | 342 | 390 |
| Average Service Liquid (GPM) | 2.7 | 2.7 | 2.7 | 5.5 | 7 | 7.5 | 9 | Dimensions | drawing | drawing | drawing | drawing | drawing | drawing | drawing |
| ACFM @ 0" | 64 | 80 | 102 | 150 | 190 | 218 | 310 |
| ACFM @ 19" | 76 | 85 | 116 | 170 | 210 | 250 | 320 |
| ACFM @ 22.5" | 76 | 90 | 120 | 178 | 222 | 262 | 332 |
| ACFM @ 25" | 75 | 99 | 130 | 180 | 236 | 274 | 342 |
| ACFM @ 27.5" | 72 | 99 | 128 | 162 | 226 | 248 | 330 |
| ACFM @ 28.9" | 45 | 70 | 88 | 110 | 138 | 148 | 205 |
| SCFM @ 19" | 27.8 | 31.1 | 42.5 | 62.3 | 77 | 91.6 | 117.2 |
| SCFM @ 25" | 12.5 | 16.5 | 21.7 | 30 | 39.3 | 45.7 | 57 |
