This is the Ballast Piston Assembly for Edwards E1/E2M series vacuum pumps. Part number 19201007. It is a key part of your pump’s gas ballast system. If your pump is struggling with water vapor or condensation, this part might need replacement. Fits E1M40, E2M40, E1M80, and E2M80 models.
This is an OEM replacement coupling element (often called a “spider”) for Edwards E1M40, E2M40, E1M80, and E2M80 rotary vane pumps . This flexible rubber insert fits between the motor and pump shaft hubs.
It is compatible with E1M40, E2M40, E1M80, and E2M80 rotary vane pumps . If you are rebuilding your pump and the old housing is worn or damaged, this is the correct OEM replacement part.
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