Bosch Rexroth | Z2DB6VD1-4X200V
Z2DB6VD1-4X/200V
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The Z2DB6VD1-4X/200V pressure relief valve is produced by Bosch Rexroth within the ZDB Pressure Relief Valves series. It serves hydraulic automation circuits by limiting line pressure through a pilot-operated relief element, and this model contains two valve cartridges to handle bidirectional flow paths. The component mounts as a sandwich plate valve, allowing it to be stacked between subplates and directional valves without extra piping. Pressure setting is adjusted with a rotary knob so maintenance personnel can tune system limits without tools. Interface dimensions correspond to nominal size 6, and the mounting pattern follows ISO 4401-03-02-0-05 for interchangeability with standard manifolds. Its relief function works from port A to B and from B to A, giving symmetrical protection for both flow directions.
Continuous service figures show a maximum operating pressure of 315 bar, while the spring setting in this variant is rated at 200 bar to define the opening point. The valve conducts up to 60 l/min so it can protect medium-capacity actuators, and it tolerates counter pressures up to 40 bar on the return line without instability. Sealing elements are made of FKM to withstand high-temperature mineral oils, and the body can be installed in any position to simplify manifold layout. System oil must be kept to 20/18/15 cleanliness per ISO 4406 to preserve the pilot passages, and the housing provides no locating hole, requiring external dowel pins if precise orientation is needed.
Technical Specifications
Adjustment Type
Rotary Knob
Connection Type
Sandwich Plate Valve
Fluid Cleanliness
20/18/15 (ISO 4406)
Installation Position
Any
Locating Hole
None
Max Counter Pressure
40 bar
Max Flow
60 l/min
Max Operating Pressure
315 bar
Nominal Size
6
Porting Pattern
ISO 4401-03-02-0-05
Pressure Rating
200 bar
Relief Function
A–B and B–A
Seal Material
FKM
Valve Cartridges
2
Valve Type
Pilot-Operated Relief
1620 Old Apex Road
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