Rexroth PC P55162 Type “S” 6‑S Relay Valve, Size 3/4″ (R431003665) is a professionally refurbished hydraulic control component designed to deliver precise, high-speed actuation in critical fluid power systems. Rebuilt to OEM specifications, this valve offers reliable operation in mobile, industrial, and process applications—such as valve control circuits, press automation, and mobile machinery—where quick response and repeatable flow control are essential. With its exact model and serial number included, R431003665 ensures traceable compatibility and simplified maintenance documentation.
This 3/4″ relay valve features robust internal spool and seat mechanisms capable of handling high cycle rates with minimal lag, providing consistent downstream pressure when upstream pilot signals are applied. Unlike standard directional valves, the 6‑S configuration allows for efficient flow amplification, enabling low-pressure pilot signals to drive high-flow actuators or circuits with greater speed and precision. Its direct-acting spring-return design ensures reliable closure when the pilot signal is removed, preventing drift and maintaining accurate positioning.
Refurbishment to OEM standards includes precision inspection and reconditioning of spool surface finishes, spring tension calibration, hydraulic seat replacement, and gasket renewal. Sealing surfaces are restored to tight tolerances to minimize leakage and maintain volumetric efficiency. A full performance test confirms that the valve meets original operational parameters—such as switching time, pressure drop, and pressure-holding capabilities—before reinstallation.
Constructed with hardened steel housing and valve components, the 6‑S relay valve supports operating pressures up to 350 bar (depending on circuit design), while its compact 3/4″ ports and standardized mounting format allow for easy retrofit or replacement within manifolds and subplate assemblies. The valve’s modular design simplifies future Servicing—technicians can replace individual internal components without disturbing the entire hydraulic circuit.
In summary, the Rexroth PC P55162 Type “S” 6‑S Relay Valve (R431003665) provides high-speed, high-precision hydraulic control through professional refurbishment. It combines trustworthy OEM performance, efficient operation, and installation convenience—making it an ideal choice for technically demanding hydraulic systems that require speed, accuracy, and longevity.
