Automatic Valve carries American Pneumatic Tool part number 1280583052, listed as 02911 before the renumbering and is stocked here under APT2911. Cycle timing runs through this component. Because it shuttles on every blow, it accumulates cycles faster than almost anything else in the rock drill.

The published breakdown lists it on the 115 Rock Drill. That machine is the APT 115 Pneumatic Rock Drill if you are pricing a replacement rather than a repair. Check it against the reference number on the diagram first; serial breaks change what fits.

Need the parts around it? They are on the same breakdown, and the parts diagram library covers every machine we publish. Denver stock, with same-day shipment on in-stock orders in by 4 PM ET.

• Part number: 1280583052
• Previous part number: 02911
• Manufacturer: American Pneumatic Tool
• Crowder SKU: APT2911
• Listed on breakdowns for: 115 Rock Drill