Bosch Rexroth | ZDBT-XA2-1X315-081VV06P100N503K-AO-LOW
ZDBT-XA2-1X/315 081VV06P100N503K-AO-LOW
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The ZDBT-XA2-1X/315 081VV06P100N503K-AO-LOW pressure relief unit is produced by Bosch Rexroth within the ZDB Pressure Relief Valves series. As a pilot-operated pressure relief element it limits system pressure in hydraulic manifolds and returns excess flow to tank. The sandwich plate connection lets it stack between a subplate and directional valves without extra piping, while the size 6 interface conserves space in compact blocks. A standardized ISO 4401-03-02-0-05 porting pattern aligns its passages with matching cavities to simplify installation. The valve tolerates operating pressures up to 315 bar so pump output can reach common industrial levels, and it passes up to 60 l/min to serve medium-flow circuits. Counter pressure at the tank line may rise to 40 bar without affecting opening behavior.
Set pressure can be adjusted to a maximum of 315 bar, allowing the user to match the valve response to specific actuator limits. The body remains functional in ambient temperatures up to 80 °C, and it accepts fluid temperatures to the same 80 °C so mineral oils stay within viscosity range. Any mounting orientation is acceptable, making layout flexible in vertical or horizontal manifolds. Internal passages require hydraulic oil cleanliness of ISO 4406 class 20/18/15 to maintain reliable seat sealing. Four mounting holes with 5.4 mm diameters secure the plate to the manifold, and the bolts should be tightened with 50 Nm on the hexagon heads to prevent leakage. These mechanical details finalize integration requirements without additional supports.
Technical Specifications
Fluid Cleanliness Class
ISO 4406 20/18/15
Hexagon Tightening Torque
50 Nm
Installation Position
Any
Maximum Ambient Temperature
80 °C
Maximum Counter Pressure
40 bar
Maximum Flow
60 l/min
Maximum Fluid Temperature
80 °C
Maximum Operating Pressure
315 bar
Maximum Set Pressure
315 bar
Mounting Hole Diameter
5.4 mm (4x)
Porting Pattern
ISO 4401-03-02-0-05
Size
6
Type Of Connection
Sandwich Plate Valve
Valve Type
Pilot-Operated Pressure Relief
1620 Old Apex Road
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