2 STAGE OIL-SEALED ROTARY VANE VACUUM PUMPS
GVD 28
FEATURES AND BENEFITS
• The pump is designed for reliable, long-term operation.
• Thermal overload device prevents overheating (single phase only).
• The pump is a free-standing unit.
• The drive is provided through a flexible coupling by a
single-phase or three-phase (four pole) motor.
• The motors are totally enclosed and are cooled by the
motor-cooling fan.
• Easy to use controls.
• Pressure die cast oil box with integral oil seals prevents oil
leaks.
• Gas ballast valve for large water vapour handling capacity.
• Externally approved to EN61010, CSA, C22.2 and UL61010.
• Oil distribution valve.
• Pumping chambers are air-tight.
• Oil sight-glass, two oil drain-plugs, inlet-port and outlet
nozzle all fitted as standard
TECHNICAL SPECIFICATIONS
| GVD 28 |
| 50Hz | 60Hz |
| Displacement | 32.2m³h⁻¹/19.0cfm | 38.9m³h⁻³/22.3cfm |
| Speed(Pneurop 6602) | 27.5m³h⁻¹/16.2cfm | 33.0m³h⁻¹/19.5cfm |
| Ultimate vacuum(total pressure)without gas ballast | 1.0x10⁻³ mbar/7.7x10⁻³ Torr |
| Ultimate vacuum(total pressure) with gas ballast | 1.5x10⁻² mbar/1.1x 10⁻² Torr |
| Inlet connection | DN25 ISO-KF |
| Outlet connection | DN25 ISO-KF |
| Max.outlet pressure | 0.5 bar/7 psig gauge |
| Max.inlet pressure for water vapor | 30 mbar / 23 Torr |
| Max.water vapor pumping rate | 700 gh⁻¹ |
| Weight(without oil) | 44 kg / 97 lb |
| Motor power | 550W | 750W |
| Power connector 1-ph* | IEC EN60320 C19 |
| Maximum oil capacity | 1.5 litre |
| Minimum oil capacity | 1.2 litre |
| Noise level | 57 dB(A) @ 50Hz |
APPLICATIONS
• Analytical instruments - LCMS
• Automotive
• Beam lines and high energy physics
• Centrifuges, ultra-high speed
• Coating
• Cryogenics
• Degassing/curing - oil, epoxy resin
• Distillation/extraction/filtration
• Freeze drying
• Furnaces
• Gas bottle filling/emptying
• Gel drying
• Glove boxes, ovens
• Laboratory bench top vacuum
• Lasers, gas recovery and re-circulation
• Leak detectors, Helium
• Load locks and transfer chambers
• Refrigeration manufacture
• Rotary, centrifugal evaporators
• Surface science instruments
• Turbomolecular backing pumps
DIMENSIONS
