Edwards IQDP 40

Models in this family

1. IQDP 40

   The Edwards iQDP40 is a four-stage, positive displacement rotary dry vacuum pump designed for clean environments with water-cooled motor and no lubrication in the pumping chamber.

   Cited variants

   Designation	Generation	Vintage	Changes	Source
   QDP40	—	—	Earlier production model with serial numbers 13940 and higher; iQDP40 has serial numbers 11210 and higher.	scribd.com[1]

Sources