Bosch Rexroth | Z2DB6VD2-4X100
Z2DB6VD2-4X/100
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The Z2DB6VD2-4X/100 belongs to the ZDB Pressure Relief Valves series manufactured by Bosch Rexroth for hydraulic automation circuits that require stable pressure limitation. It is a pilot-operated pressure relief valve in size 6, built as a sandwich plate valve so it can be stacked between subplates and directional controls without extra piping. The porting pattern follows ISO 4401-03-02-0-05, allowing direct interchange with standard NG06 manifolds. A set pressure rating of 100 bar establishes the primary cracking threshold, while the unit tolerates a maximum operating pressure of 315 bar for safety margin under transient peaks. Flow capacity reaches 60 l/min to match medium-duty pump outputs, and the relief function works in both A–B and B–A directions to protect either service line.
Pressure adjustment is accomplished with a hex sleeve under a protective cap, identified as adjustment type 2, so settings remain tamper-resistant during operation. The sealing elements are NBR, giving compatibility with common mineral oils and good low-temperature resilience. Installation is unrestricted because the valve can be mounted in any position, and SW24 flats accept 50 Nm of tightening torque for secure seating. Fastening to the manifold uses M5 screws per ISO 4762, while no locating pin is required because a locating hole is not provided. Hydraulic cleanliness should conform to ISO 4406 20/18/15 to prevent spool erosion, and the design permits 40 bar counter pressure on the tank port without affecting relief accuracy.
Technical Specifications
Adjustment Type
2 (Hex Sleeve, Protective Cap)
Cleanliness Class
ISO 4406 20/18/15
Design
Sandwich Plate Valve
Hex Sw24 Tightening Torque
50 Nm
Installation Position
Any
Locating Hole
None
Maximum Counter Pressure
40 bar
Maximum Flow
60 l/min
Maximum Operating Pressure
315 bar
Mounting Screws
M5 (ISO 4762)
Porting Pattern
ISO 4401-03-02-0-05
Relief Function
A–B and B–A
Seal Material
NBR
Set Pressure Rating
100 bar
Size
6
Valve Type
Pilot-Operated Pressure Relief Valve
1620 Old Apex Road
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