This is the Chicago Pneumatic check valve plate part number F812889 (also carried as 3310103424), Crowder SKU CP-F812889. It directs the flow that reverses the piston in the pump. Valve wear changes port timing, and the machine loses blow rate before it loses the ability to run.
Crowder’s breakdowns list this part on the CP 0077 Sludge Pump.
Everything else on that machine is one page away on the parts diagram library; complete tools are on the Chicago Pneumatic tool range. It ships out of Denver, same day on in-stock orders placed before 4 PM ET.
- Part number: F812889
- Also listed as: 3310103424
- Manufacturer: Chicago Pneumatic
- Crowder SKU: CP-F812889
- Listed on breakdowns for: CP 0077 Sludge Pump
