Throttle Valve – Complete is the Atlas Copco service part carried under part number 3121057281. It governs how air reaches the working end of the rock drill. Wear on the sealing land is the usual cause of a throttle that leaks with the trigger released.
The published breakdown lists it on the BBD 94W 94WS 94WE Rock Drill.
The rest of the assembly is on the same breakdown, and every diagram we publish is indexed on the full diagram library. Denver stock, with same-day shipment on in-stock orders in by 4 PM ET.
- Part number: 3121057281
- Manufacturer: Atlas Copco
- Crowder SKU: AC-3121057281
- Listed on breakdowns for: BBD 94W 94WS 94WE Rock Drill

