Product Overview
The Parker 9F400S is a precision-engineered flow control valve belonging to Parker Hannifin’s comprehensive line of hydraulic flow control and modular valves. Designed to regulate the volumetric flow rate of hydraulic fluid within a circuit, this valve ensures precise actuator speed control and system stability regardless of pressure fluctuations. The 9F400S operates on a pressure-compensated principle, maintaining a constant flow output across a specified range of inlet pressures, making it an essential component for demanding industrial hydraulic systems requiring accurate motion control and repeatable performance.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Hydraulic Flow Control & Modular Valve |
| Model Designation | 9F400S |
| Operating Pressure | Standard Industrial Grade (Up to 350 bar rated) |
| Mounting & Connection | Standard ISO / Manufacturer Interface |
| Flow Control Principle | Pressure-Compensated, Adjustable Metering |
| Adjustment Type | Manual Knob / Screw Adjustment with Locking Mechanism |
| Fluid Compatibility | Mineral-Based Hydraulic Oils (ISO VG 32–68) |
| Seal Material | Nitrile (Buna-N) / Fluorocarbon Options |
Engineering Features & Advantages
- Precision Flow Metering: The pressure-compensated spool design maintains a constant flow rate regardless of load-induced pressure variations, ensuring consistent actuator speed and superior process repeatability.
- Industrial Reliability: Built for continuous operation under severe industrial conditions with a robust housing and wear-resistant internal components for extended service life.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original OEM Parker 9F400S specifications, allowing drop-in replacement without system modification.
- Fine Adjustment Capability: Sensitive manual adjustment mechanism with locking feature enables precise tuning of flow rates and prevents drift due to vibration or system pulsation.
- Modular Integration: Designed for seamless integration into modular hydraulic valve stacks and manifold systems, reducing piping complexity and leak points.
Typical Industrial Applications
The Parker 9F400S flow control valve is widely deployed in demanding industrial environments including plastic injection molding machines where precise injection speed control is critical, metallurgical presses requiring accurate ram velocity regulation, CNC machine tools and machining centers for controlled feed rates, and construction & marine hydraulic systems where reliable actuator speed management under varying loads is essential. Its pressure-compensated design also makes it suitable for test stands, hydraulic power units, and any application demanding stable flow regardless of system pressure fluctuations.
PRODUCT IMAGES


PARKER 9F400S Flow Control 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 9F400S Solenoid Directional Control Valve. This Germany-made 24V DC hydraulic component features a spool-type design, delivering leak-free, reliable fluid control for heavy-duty industrial systems.





