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The Z2DBY6DD2-1X/80V/60 valve is produced by Bosch Rexroth for the ZDB Pressure Relief Valves series. It serves as a pilot-operated pressure relief element in hydraulic automation, safeguarding circuits that use the ISO 4401-03-02-0-05 mounting pattern. The sandwich plate connection and nominal size 6 interface allow stacking beneath directional valves, while two internal cartridges govern the pilot and main flow paths. System pressures can reach 315 bar, and the design passes up to 60 l/min at the set limit. A dedicated pilot drain runs externally to port T so back pressure does not influence the opening point.
Installation requires 50 Nm on the hexagon adjustment screw, and alignment is helped by an included locating hole and an ISO 8752-3x8-St locating pin. The return line may carry up to 40 bar counter pressure, provided the fluid belongs to the HL, HLP, HLPD, HVLP, or HVLPD classes. FKM seals isolate the working channels, and oil cleanliness must meet ISO 4406 code 20/18/15 to prevent wear and sticking. Under these conditions the Z2DBY6DD2-1X/80V/60 maintains stable relief action for industrial hydraulic power units.
Cartridges
2
Cleanliness Class
ISO 4406 20/18/15
Hexagon Torque
50 Nm
Hydraulic Fluid
HL, HLP, HLPD, HVLP, HVLPD
Locating Hole
Included
Locating Pin
ISO 8752-3x8-St
Maximum Counter Pressure
40 bar
Maximum Flow
60 l/min
Maximum Operating Pressure
315 bar
Nominal Size
6
Pilot Drain
External To T
Porting Pattern
ISO 4401-03-02-0-05
Seal Material
FKM
Type Of Connection
Sandwich Plate Valve
Valve Type
Pressure Relief, Pilot-Operated
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