Edwards
Provisional entry — research in progress
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The iQDP 40 pump uses pairs of intermeshing rotors of different profiles mounted on common shafts, held in phase by oil-lubricated timing gears. The timing gears and adjacent double-row angular-contact ball bearings are oil lubricated. The pump has an indirect cooling system and the pump motor is water cooled. A Gas Module introduces purge gas into the pump; three types of Gas Module are available for light, medium, and harsh duty processes. An optional Pump Display Module allows manual control of the system.[4][1]
| Designation | Generation | Vintage | Changes | Source |
|---|---|---|---|---|
| QDP40 | — | — | Earlier production model with serial numbers 13940 and higher; iQDP40 has serial numbers 11210 and higher. | scribd.com[2] |
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The inlet connection is ISO 40 bolted and the exhaust connection is KF 40.[3]
The pumping speed is 32.37 CFM at 60 Hz.[3]
The IQDP 40 is a four-stage positive displacement rotary pump.[4]
The following facts about the IQDP 40 are absent from this record as of this revision. First-hand knowledge or a citation closes a gap; every submission is reviewed before publication.
No publicly documented production dates or lifecycle milestones (introduction, end of production, EOL) for the IQDP 40 are on record.
Answerable by: OEM historical records or a trade-press announcement
The control-system platform and OS era of the IQDP 40 are not on record.
Answerable by: an engineer who operated it or OEM installation records
No publicly documented failure modes or field errata for the IQDP 40 are on record.
Answerable by: a field service engineer, process engineer, or maintenance technician
The process node or technology generation of the IQDP 40 is not on record.
Answerable by: an OEM datasheet or a fab qualification report
No publicly documented compatible parts, consumables, or accessories for the IQDP 40 are on record.
Answerable by: an OEM parts catalog or a service engineer
No research found yet — worked with this tool? Share what you know.
Last updated Sep 24, 2026.