By Pass Valve is the Atlas Copco service part carried under part number 3377004747. It directs the flow that reverses the piston in the power pack. Valve wear changes port timing, and the machine loses blow rate before it loses the ability to run.
The published breakdown lists it on the PAC P18 Hydraulic Power Pac and PAC P18 Twin E11 Twin Hydraulic Power Pac, and on 9 other machines. 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.
The parts diagram hub indexes every breakdown we publish, and the Atlas Copco lineup has the tools these parts go into. Denver stock, with same-day shipment on in-stock orders in by 4 PM ET.
- Part number: 3377004747
- Manufacturer: Atlas Copco
- Crowder SKU: AC-3377004747
- Listed on breakdowns for: PAC P18 Hydraulic Power Pac, PAC P18 Twin E11 Twin Hydraulic Power Pac, APP13 Hydraulic Power Pac, APP18 Twin Hydraulic Power Pac, LP 9-20P 9-20E Hydraulic Power Pac, LP 13-20 DEL Hydraulic Power Pac, +5 more
