Upper Cylinder Washer, Atlas Copco part number 4430021900, listed at Crowder Supply as AC-4430021900. This is the main pressure housing of the pump. Because it wears against the piston, the two are normally inspected and replaced as a pair.
It is called out in the parts diagram for the DIP 25 35 65 25US 35US 65US Centrifugal Pump. Worth matching the reference number on the diagram against your own machine before you order the same part number can sit in more than one position.
Everything else on that machine is one page away on the parts diagram library; complete tools are on the Atlas Copco tool range. Stocked in Denver orders placed by 4 PM ET ship the same day when the part is on the shelf.
- Part number: 4430021900
- Manufacturer: Atlas Copco
- Crowder SKU: AC-4430021900
- Listed on breakdowns for: DIP 25 35 65 25US 35US 65US Centrifugal Pump
