4WRZE16W8-150-7X/6EG24N9ETK31/A1V

The 4WRZE16W8-150-7X/6EG24N9ETK31/A1V valve is produced by Bosch Rexroth as part of the WRZ Proportional Directional Valves series and is intended to meter hydraulic flow in automated systems with continuous position control. It is powered by a 24 V DC supply voltage so cabinet power supplies can feed the integrated electronics without conversion. The ±10 V command signal defines the analog input range used by motion controllers to position the spool proportionally. A 100 % duty cycle permits the solenoid to remain energized indefinitely, supporting constant regulation during long production shifts. The solenoid draws up to 2.5 A, a value that guides fuse sizing and drive-card current limits. Electrical connection is made through a DIN EN 175201-804 plug, providing a standardized interface for field wiring. An IP65 protection class guards the housing against dust and low-pressure jets of water, making it suitable for machine environments that require wash-down or coolant spray. The coil can reach 150 °C without damage, allowing reliable function under elevated oil temperatures. Mounted on its subplate it weighs 13.6 kg, which influences manifold support and handling equipment.

The valve delivers a nominal flow of 150 l/min at a 10 bar pressure drop, enabling fast cylinder movement in medium-size presses or injection machines. It withstands operating pressures up to 350 bar, aligning with high-pressure pump circuits common in industrial hydraulics. A 15 % command value overlap establishes a neutral dead-band that prevents unintended spool motion during small command fluctuations. When driven from 0 to 100 % stroke, pilot oil flow reaches 5.5 l/min, and the associated pilot volume is 4.6 cm³; these figures are used to size pilot lines and ensure responsive shift times. Port T handles internal drain pressures up to 30 bar, and the same 30 bar limit applies to port Y, supporting back-pressure conditions found in return manifolds. FKM seals are installed to resist high-temperature hydraulic fluids and many synthetic media, extending service intervals in chemically demanding applications.