ZDBT-XP7-1X/160 081VV06P100N502E-AO-HIGH

The ZDBT-XP7-1X/160 081VV06P100N502E-AO-HIGH pressure relief valve belongs to the ZDB Pressure Relief Valves series from Bosch Rexroth and limits pressure in hydraulic automation circuits. It uses a sandwich plate valve connection, enabling stack mounting between directional valves and subplates without extra pipework. A nominal size 6 flow path keeps internal volume low and shortens response time in compact manifolds. Interface geometry follows porting pattern ISO 4401-03-02-0-05 so it aligns with standard NG6 subplates. The valve withstands a maximum operating pressure of 315 bar, allowing direct installation in high-pressure supply lines, and it passes up to 60 l/min, supporting moderate flow circuits in mobile or industrial power units. Counter pressure at the tank line may reach 40 bar without affecting set relief characteristics. Pilot oil is discharged externally through port T, preventing backpressure in the pilot stage, and because the installation position can be any orientation, manifold designers have freedom in block layout.

Field conditions with FKM seals permit ambient temperatures from −15 to +80 °C, while NBR options widen the lower limit to −20 °C, letting the same valve suit cold warehouses or heated machine rooms. Identical limits apply to the hydraulic fluid, with FKM equipped units handling −15 to +80 °C and NBR versions tolerating −20 to +80 °C, so seal selection matches both environment and oil. Stable function is maintained when oil viscosity remains between 10 and 800 mm²/s, covering common mineral and synthetic fluids used in power packs; these fluid parameters keep internal damping orifices clear and preserve predictable relief behavior during long duty cycles. System cleanliness is expected at ISO 4406 class 20/18/15 or better, minimizing spool wear and guaranteeing repeatable cracking pressure. Assembly to the manifold employs M5 mounting screws, providing consistent clamping force across the sealing surface without increasing footprint.