ZDR10VP5-3X/315YM/12

The ZDR10VP5-3X/315YM/12 pressure reducing valve belongs to the ZDR Pressure Reducing Valves series manufactured by Bosch Rexroth for closed-loop hydraulic automation. It lowers a primary circuit pressure to a stable secondary level that can be tuned by a sleeve with a hexagon and protective cap; this adjustment device permits field setting while discouraging accidental tampering. The nominal size 10 housing supports medium flow rates without excessive restriction, and the sandwich plate mounting format lets the unit be stacked between other ISO 4401 components to simplify manifold layouts. Its porting pattern ISO 4401-05-04-0-05 aligns the internal galleries with standard subplates, while the five available ports separate pilot, drain, and main flow paths for accurate regulation. Pilot oil is taken from the inlet and returned externally so the pilot line remains unaffected by downstream fluctuations. Pressure is reduced in the P line from P2 to P1, and the 315-bar pressure stage defines the highest downstream setting the operator can dial in.

An inlet operating limit of 315 bar allows the valve to cope with high supply pressure, and a counter pressure tolerance of 160 bar on the pilot drain ensures stable control even when the tank line is loaded. The unit passes up to 100 liters per minute, providing adequate capacity for medium-sized actuators. A G1/8 pressure gauge port enables direct connection of a test instrument so the adjusted secondary pressure can be verified during commissioning. Four M6 ISO 4762-10.9 screws clamp the sandwich body to its companion plates, maintaining alignment under load. SAE threaded ports interface with commonly used tube fittings, reducing the need for adapters. NBR seals are fitted to resist standard mineral hydraulic oils and limit leakage into the environment. The fluid must meet ISO 4406 class 20/18/15 cleanliness so that the pilot passages remain free of debris and the valve spool does not stick.