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> Boc edwards QDP40 pump (used)
Boc edwards QDP40 pump (used)
BOC Edwards QDP-40 Drystar Dry Vacuum Pump
Specifications are from BOC Edwards and may vary slightly due to upgrades, options, or revisions this unit may or may not have. This is a stock photo and is representative of the many pumps we have in stock. The unit was removed from service in working condition. The unit works but needs to be rebuilt.
The QDP pumps operate at pressures between atmospheric and ultimate vacuum with no lubricating or sealing fluid in the pumping chamber. This ensures a clean pumping system without back-migration of oil into the system being evacuated.
QDP pumps have enclosed, water-cooled motors and are therefore suitable for applications in clean environments where fan cooling is unacceptable. The QDP pumps are each fitted with a gas system, exhaust-silencer and check-valve. The pump is fixed to the framework by vibration isolators. The framework has castors and leveling feet.
The QDP pumps are four-stage, positive displacement rotary pumps in which pairs of intermeshing rotors (of different profiles mounted on common shafts) are held in correct phase relation by a pair of timing-gears. The timing-gears and the adjacent double-row angular contact ball-bearings, are oil lubricated.
The pump shafts and rotors are made from cast-iron. The internal and external shaft-seals on the motor drive-shaft are made of polytetrafluoroethylene (PTFE). Bearings are located on the high vacuum end of the shaft, near to the pump-inlet. These bearings are packed with perfluoropolyether (PFPE) grease.
These BOC Edwards QDP-40 Dry Vacuum Pump "Dry Pumps" are ideal for the corrosive enviroment of semiconductor processing.
Vacuum System Maximum Leak-Rate: 1 x 10-5 mbar ls-1 (1 x 10-3 Pa ls-1)
Exhaust System Maximum Leak-Rate: 1 x 10-5 mbar ls-1 (1 x 10-3 Pa ls-1)
Ambient Operating Temperature Range: 5 C to 40 C
Maximum Ambient Operating Humidity: 90% RH
Protection Degree (as defined by IEC 529): IP44
Continuous A-Weighted Sound Pressure Level (at 1 meter): < 70 dB(A)
60 Hz Operation: 62.4 m3h-1 (36.7 ft3min-1)
Typical Ultimate Vacuum Without Gas-Ballast:
50 Hz Operation: 5 x 10-2 mbar (5 x 100 Pa)
60 Hz Operation: 3 x 10-2 mbar (3 x 100 Pa)
Maximum Continuous Inlet Pressure: 1 x 103 mbar
Typical Shaft-Seal Nitrogen Flow: 7 slm
