Four-stage diaphragm pumps are an excellent solution for continuous, oil-free pumping of gases when the need is to reach fractional millibar ultimate vacuums. All parts in contact with pumped vapors or gases are made of aluminum, stainless steel and carefully selected plastics suitable for a wide range of non-corrosive applications. The new NT-series pumps provide whisper-quiet and ultra-low-vibration operation, high leak-tightness and improved vacuum. The highly flexible, fabric-reinforced double diaphragm made of FKM offers extended operating life.
| Weight | 16.4 kg |
| Manufacturer | BRAND (BrandTech Scientific) |
| Items supplied | Pump completely mounted, ready for use, with manual. |
| Protection class IEC 60529 | IP 40 |
| Upper ambient temperature (operation) | 40 °C |
| Lower ambient temperature (operation) | 10 °C |
| Dimension B in mm | 239 mm |
| Max. pumping speed 50 Hz | 2.2 m 3 /h |
| Max. pumping speed 60 Hz | 1.4 cfm |
| Ultimate vacuum | 0.5 mbar / 0.4 torr |
| Number of heads | 4 |
| Number of stages | 4 |
| Lower ambient temperature (storage) | -10 °C |
| Upper ambient temperature (storage) | 60 °C |
| Max. back pressure (abs.) | 1.1 bar |
| Inlet connection | small flange KF DN 16 |
| Outlet connection | Silencer / G1/4" |
| Rated motor power | 0.25 kW |
| Rated motor speed at 50/60 Hz | 1500/1800 min -1 |
| Dimension L in mm | 328 mm |
| Dimension H in mm | 198 mm |
| Noise (sound pressure level) in dBA at 50 Hz or 1500 rpm/62% (VARIO)/1500 rpm (VARIO-SP)/12500 Upm (VACUU·PURE®) | 50 dBA |
| ATEX conformity | II 3/- G Ex h IIC T3 Gc X Internal Atm. only |
| NRTL certification | Yes |
| Rated mains voltage range 1 | 230 V |
| Mains frequency 1 | 50-60 Hz |