This is Chicago Pneumatic part number 2911007400 unloading valve kit, stocked at Crowder Supply as CP-2911007400. Buying the kit rather than individual pieces is usually the cheaper route once the machine is already apart.

If you are working from a machine rather than a part number, start at the parts diagram hub, or send us the model and serial and we will match it. Machines themselves are on the Chicago Pneumatic lineup. Denver stock, with same-day shipment on in-stock orders in by 4 PM ET.

• Part number: 2911007400
• Manufacturer: Chicago Pneumatic
• Crowder SKU: CP-2911007400