Screwvac SD Series
Dry Screw Vacuum Pumps
The SCREWVAC Series dry screw vacuum pumps, thanks to the exclusive “hybrid” design of the high efficiency rotors, allow significant energy savings and a low exhaust gas temperature. Hybrid Variable Pitch developed by combining and maximizing advantages of both Single pitch and Variable pitch.
Screwvac SD BARESHAFT series screw pumps are ATEX certified up to category II 2G Ex h T4 IIC Gb.
| SD 120 | SD 250 | SD 350 | SD 650 | SD 1500 | SD 2500 | ||
|---|---|---|---|---|---|---|---|
| Nominal pumping speed | cfm | 76,5 | 176,7 | 235,4 | 470,9 | 882,9 | 1589,2 |
| Ultimate pressure (abs) | torr | ≤ 0,05 | ≤ 7,5x10-3 | ≤ 7,5x10-3 | ≤ 7,5x10-3 | ≤ 0,05 | ≤ 0,05 |
| Motor power | Hp | 5,3 | 10 | 14,7 | 24,8 | 49,6 | 73,7 |
| Motor speed | rpm | 3500 | 3500 | 3500 | 3500 | 1750 | 1750 |
| Noise level | dB(A) | 77 | 79 | 81 | 82 | 83 | 84 |
| Cooling water (@ 59° F) | US gal/min | 1,3 - 2,6 | 2,6 - 4 | 2,6 - 4 | 4 - 5,3 | 7,9 - 10,6 | 10,6 - 13,2 |
| Dimensions (L x W x H) | in | 45x12,4x24,3 | 51,5x16,3x30,6 | 55,7x18,3x31,7 | 67,8x21,5x35,2 | 94,5x27,9x43,7 | 107x40,2x248,9 |
| Total weight (Bareshaft) | lbs | 165 | 771,6 | 460 | 630 | 1540 | 4960,4 |
Advantages
- An efficient water cooling system allows better management of the pump’s operating temperature, adapting it to the application’s purpose
- No contamination of process flow
- Low discharge temperature
- Long service intervals
- Low cost of maintenance
- Immediate recovery of the solvent at the pump discharge
Furthermore, a special surface treatment of screws and stator increases resistance to corrosion, extending the life of the pump. ATEX version available.
