Throttle Valve – Complete is the Atlas Copco service part carried under part number 3121048981. 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 34W WS Pusher Leg Drill. Worth matching the reference number on the diagram against your own machine before you order the same part number can sit in more than one position.
Everything else on that machine is one page away on the parts diagram library; complete tools are on the Atlas Copco lineup. It ships out of Denver, same day on in-stock orders placed before 4 PM ET.
- Part number: 3121048981
- Manufacturer: Atlas Copco
- Crowder SKU: AC-3121048981
- Listed on breakdowns for: BBC 34DSI Rock Drill, BBC 34W WS Pusher Leg Drill
