STP451 turbomolecular pump offers field proven reliability for use in electron microscopes, scientific instruments and semiconductor applications. Edwards rotor technology gives class-leading performance for maximum process flexibility. The STP451 has been approved for use by major equipment manufacturers in the scientific instrument, semiconductor and magnetic media industries.
| Technical data | |
| Inlet flange | ISO160 or DN160CF | 
| Pumping speed | |
| N2 | 440 ls-1 | 
| H2 | 275 ls-1 | 
| Compression ratio | |
| N2 | >108 | 
| H2 | >2 x 104 | 
| Ultimate pressure ISO inlet flange | 6,5 x 10-6 Pa | 
| Ultimate pressure CF inlet flange | 10-8 Pa | 
| Maximum allowable inlet pressure | |
| Ambient cooled | 0,066 Pa (5 x 10-4 Torr) | 
| Maximum continuous outlet pressure | |
| Ambient cooled | 13 Pa (0,1 Torr) | 
| Rated speed | 48000 rpm | 
| Stop/Start time | 3/5 min | 
| Maximum inlet flange temperature | 120°C | 
| Input voltage | 100 to 120 V a.c. (± 10) or 200 to V a.c. (±10) | 
| Power consumption Start up / Continuous | 350 / 100 VA | 
| Weight | |
| Pump | 12 kg | 
| Controller | 7 kg |