4WRA10W30-2X/G24N9K4/V

The 4WRA10W30-2X/G24N9K4/V valve belongs to the 4WRA Proportional Directional Valves series and is produced by Bosch Rexroth for closed-loop hydraulic control. It meters flow in proportion to the input current and supports precise cylinder and motor positioning in automation circuits. The valve is built to nominal size 10, which defines the interface dimensions and flow capacity for manifold mounting. A W-type spool is installed to generate symmetrical flow characteristics for bidirectional actuation. Connection to the manifold follows the ISO 4401-05-04-0-94 pattern, ensuring interchangeability with standard sub-plates. Under a 10 bar pressure drop the valve delivers a nominal flow of 30 l/min, providing stable movement for medium-size actuators. Electrical actuation requires a 24 VDC supply, and each solenoid presents a coil resistance of 2 Ω at 20 °C to match common drive amplifiers. Current up to 2.5 A can be applied to each solenoid, and a 100 percent duty cycle allows continuous modulation without thermal pauses. The solenoid is wired through a DIN EN 175301-803 connector for quick field replacement.

For pressure control, ports P, A, and B withstand up to 315 bar while port T is limited to 210 bar, aligning the valve with high-pressure industrial systems. The metering section accommodates a maximum permissible flow of 75 l/min, so oversizing of the supply pump is not required for dynamic tasks. An IP65 protection class shields the coil assembly against dust and low-pressure water jets, facilitating installation on machinery exposed to spray or debris. FKM seals are fitted to tolerate a broad range of hydraulic fluids and elevated oil temperatures. The internal passages must be supplied with oil cleanliness of 20/18/15 according to ISO 4406 to minimize wear of the precision spool and sleeve. Total unit mass is 6.6 kg, allowing technicians to handle the valve during service without lifting aids yet providing enough rigidity to resist vibration. These characteristics combine to give repeatable proportional response and long service life in mobile or industrial hydraulic automation.