Product Overview
The Rexroth 8P-1S / P55556-3 is a pneumatically actuated directional control valve engineered for precise management of compressed air flow in industrial process circuits. As part of the Rexroth 8P series, this valve utilizes a balanced spool and sleeve design that ensures consistent shifting forces and minimal leakage across the operating range. The P55556-3 designation identifies a specific flow configuration and porting arrangement, making it a direct-fit component for OEM pneumatic control panels and manifold assemblies. Its robust construction and pneumatic pilot actuation allow for reliable, high-cycle operation in automated machinery where rapid response and long service life are critical.
Technical Specifications
| Parameter | Specification / Feature |
|---|---|
| Component Type | Pneumatic Directional Control Valve |
| Model Designation | 8P-1S / P55556-3 |
| Operating Pressure | Standard Industrial Grade (Up to 10 bar / 145 psi) |
| Mounting & Connection | Standard ISO / Manufacturer Interface |
Engineering Features & Advantages
- Precision Performance: Balanced spool design delivers consistent actuation force and minimal internal leakage, ensuring accurate flow control and repeatable cycle times in high-speed pneumatic systems.
- Industrial Reliability: Built for continuous operation under severe industrial conditions, with wear-resistant seals and a hardened spool that withstands millions of cycles without degradation.
- Direct Fit Replacement: Exact dimensional and functional compatibility with original OEM standards, allowing drop-in replacement without modification to manifolds or piping.
Typical Industrial Applications
This valve is commonly deployed in plastic injection molding machines for mold opening and ejection sequences, metallurgical presses for clamping and safety interlock circuits, packaging and assembly automation for actuator control, and general factory automation panels requiring reliable directional air flow management.
PRODUCT IMAGES


Rexroth 8P-1S / P55556-3 Pneumatic Directional Control Valve
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- Authentic & Fully Tested: 100% bench tested for hydraulic response, pressure rating, and null-bias stability before dispatch.
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- Peace of Mind: Covered by our 12-Month Replacement Warranty.
Shop the genuine REXROTH 8P-1S / P55556-3 Solenoid Directional Control Valve. This Germany-made 24V DC hydraulic component features a 4-way 3-position design, delivering leak-free, reliable fluid control for heavy-duty industrial systems.