Bosch Rexroth | Z2DB10VC2-4X50V
Z2DB10VC2-4X/50V
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The Z2DB10VC2-4X/50V pressure relief valve belongs to the ZDB Pressure Relief Valves series manufactured by Bosch Rexroth. It is a pilot-operated pressure relief unit intended to protect hydraulic circuits by routing excess flow to tank. The sandwich plate connection lets it be stacked between subplates and directional valves. The model supports both A-T and B-T relief paths so either service port can be safeguarded. Two integrated pressure valve cartridges handle the separate lines. The set pressure is factory designated at 50 bar, while the sleeve with hex and a protective cap allows external adjustment when needed. During service the valve withstands operating pressure up to 315 bar and tolerates counter pressure on the tank port to 40 bar without functional loss.
The valve operates with mineral oils according to DIN 51524 over a viscosity range of 10 to 800 mm²/s, offering flexibility for common hydraulic fluids. FKM seals maintain integrity, and the permitted ambient temperature spans −15 °C to +80 °C, matching the same limits for fluid temperature. Any installation position is accepted, enabling convenient routing of the pressure line in compact manifolds. System cleanliness must meet ISO 4406 class 20/18/15 to prevent damage to the pilot stage. Within these boundaries the unit delivers predictable crack pressure, making it suitable for presses, test rigs, and mobile equipment that rely on steady pressure limitation. Bosch Rexroth manufactures the ZDB series to integrate with modular subplate systems, so designers can combine multiple functions without additional line plumbing. These factors support reliable relief behavior throughout the defined fluid conditions.
Technical Specifications
Adjustment Type
Sleeve With Hex And Protective Cap
Ambient Temperature (fkm)
-15 to +80 C
Cleanliness Class
ISO 4406 20/18/15
Connection Type
Sandwich Plate
Hydraulic Fluid
Mineral Oils (DIN 51524)
Hydraulic Fluid Temperature (fkm)
-15 to +80 C
Installation Position
Any
Maximum Counter Pressure
40 bar
Maximum Operating Pressure
315 bar
Pressure Valve Cartridges
2
Relief Function
A-T And B-T
Seal Material
FKM
Set Pressure Rating
50 bar
Valve Type
Pilot-Operated Pressure Relief
Viscosity Range
10 to 800 mm2/s
1620 Old Apex Road
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