Product Overview
The Parker ZDR-AR-01-5-S0-D1 (part number 098-91213-0) is a pilot-operated pressure reducing valve from Parker Hannifin’s proven ZDR series, engineered to maintain a constant reduced outlet pressure regardless of fluctuations in inlet pressure or changes in flow demand. This valve operates on a balanced spool principle, where a pilot stage senses downstream pressure and modulates the main spool position to throttle flow and hold the secondary circuit at the preset value. As a dedicated pressure control valve, it plays a critical role in industrial hydraulic systems by protecting downstream components, enabling multi-pressure circuits from a single power source, and ensuring consistent actuator force in clamping, positioning, and holding functions. The ZDR-AR configuration denotes a reducing valve with an integrated pressure relief function on the secondary side, providing an additional safeguard against pressure spikes in the reduced-pressure branch.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Hydraulic Valve — Pressure Control Valve (Pressure Reducing Valve) |
| Model Designation | ZDR-AR-01-5-S0-D1 / 098-91213-0 |
| Manufacturer | Parker Hannifin |
| Valve Function | Pilot-operated pressure reducing with secondary relief function (AR configuration) |
| Operating Pressure | Standard Industrial Grade (up to 315 bar inlet, reduced outlet per adjustment range) |
| Adjustment Type | Manual adjustment via set screw with locknut (D1 adjustment element) |
| Mounting & Connection | Subplate mounting, ISO 4401 / CETOP interface, size 01 (NG6) |
| Seal Material | NBR (S0 designation), suitable for mineral oil based hydraulic fluids |
| Fluid Compatibility | HLP / HLP-D hydraulic oils per DIN 51524 |
Engineering Features & Advantages
- Precision Pressure Regulation: The pilot-operated balanced spool design delivers accurate and stable reduced outlet pressure, minimizing hysteresis and pressure overshoot even under varying flow conditions.
- Integrated Secondary Relief: The AR configuration includes a relief function on the reduced-pressure side, protecting downstream components from pressure spikes caused by external forces or thermal expansion.
- Industrial Reliability: Built for continuous operation under severe industrial conditions, with a robust cast body and hardened spool for long service life and minimal internal leakage.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original OEM standards, including ISO 4401 / CETOP mounting pattern for drop-in installation.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original PARKER OEM standards, ensuring drop-in replacement without modification to existing manifolds or piping.
Typical Industrial Applications
As a dedicated pressure control valve, it plays a critical role in industrial hydraulic systems by protecting downstream components, enabling multi-pressure circuits from a single power source, and ensuring consistent actuator force in clamping, positioning, and holding functions.
PRODUCT IMAGES





PARKER ZDR-AR-01-5-S0-D1 / 098-91213-0 Pressure Reducing Valve
⚡ Emergency Plant Maintenance & Ready-to-Ship Notice:
- Authentic & Fully Tested: 100% bench tested for hydraulic response, pressure rating, and null-bias stability before dispatch.
- Fast Dispatch: In-stock units ready for same-day dispatch via DHL / FedEx Express directly to your plant.
- Pre-Shipment Verification: High-definition photos, video testing runs, and serial number verification provided prior to shipment.
- Peace of Mind: Covered by our 12-Month Replacement Warranty.
Shop the genuine PARKER ZDR-AR-01-5-S0-D1 Pressure Reducing Valve. This Germany-made hydraulic component features a direct-acting design, delivering leak-free, reliable fluid control for heavy-duty industrial systems.





