Ordering by number: this is 3121072681, which also shows up as 3121072680, the Atlas Copco valve – complete. It directs the flow that reverses the piston in the rock drill. Valve wear changes port timing, and the machine loses blow rate before it loses the ability to run.
You will find it on the diagram for the BBC 34DSI Rock Drill and BBC 16W WS Pusher Leg Drill, and on 1 other machine. Check it against the reference number on the diagram first; serial breaks change what fits.
If you need the parts around it, the parts breakdown index has the full breakdown library, and the Atlas Copco catalog covers the machines themselves. It ships out of Denver, same day on in-stock orders placed before 4 PM ET.
- Part number: 3121072681
- Also listed as: 3121072680
- Manufacturer: Atlas Copco
- Crowder SKU: AC-3121072681
- Listed on breakdowns for: BBC 34DSI Rock Drill, BBC 16W WS Pusher Leg Drill, BBC 34W WS Pusher Leg Drill
