Throttle Valve Ass’y is the Atlas Copco service part carried under part number 3121048980. This is control gear it meters air to the rock drill. A worn control gives creep, hard starting, or a tool that will not shut off cleanly.
Crowder’s breakdowns list this part on the BBC 34DSI Rock Drill and BBC 16W WS Pusher Leg Drill, and on 1 other machine. Pull up the diagram and confirm the reference number for your serial before ordering.
If you need the parts around it, the parts diagram hub has the full breakdown library, and the Atlas Copco lineup covers the machines themselves. Ships from our Denver warehouse; in-stock parts ordered by 4 PM ET go out the same day.
- Part number: 3121048980
- Manufacturer: Atlas Copco
- Crowder SKU: AC-3121048980
- Listed on breakdowns for: BBC 34DSI Rock Drill, BBC 16W WS Pusher Leg Drill, BBC 34W WS Pusher Leg Drill
