Rexroth 4WEH22D7X/6EG24N9ETK4/B10 Valve - Key Parameters

Rexroth 4WEH22D7X/6EG24N9ETK4/B10 Valve - FAQ

Q1: What is the main application for a 4WEH22 size valve?

A:​ The 4WEH22 is designed for very high flow hydraulic systems. With a nominal size of 22 mm, it is typically used to control large cylinders or high-power hydraulic motors in heavy industrial machinery, large presses, or mobile equipment where flow rates can reach 400-500 liters per minute.

Q2: What is the likely center function of the "D7X" main spool?

A:​ The "D" series designation typically indicates a "closed center" function. In the neutral (centered) position, it is most likely that all four main ports (Pressure P, Actuator ports A & B, and Tank T) are blocked. This function holds the actuator in a fixed, locked position. Confirm the exact D7X symbol in the datasheet.

Q3: How is this high-flow valve controlled electrically?

A:​ It uses a two-stage design. A small, standard 24V DC double-solenoid pilot valve ("6EG24N9ETK4") provides the electrical interface. Energizing one pilot solenoid directs pilot pressure to shift the large main spool. This allows low-power control of a very high-power valve.

Q4: What are the key performance ratings?

A:​ The main stage is rated for a maximum operating pressure of 350 bar. Its flow capacity is in the very high range, potentially up to 500 l/min depending on the specific D7X spool variant. It mounts on an ISO 4401-08 (CETOP 8) subplate, which is larger than those used for 10mm and 16mm valves.

Q5: Where can I find the complete specifications and installation details?

A:​ For the full technical datasheet, including the exact D7X center function, detailed flow-pressure curves, required pilot pressure and flow, and dimensional drawings, consult the official documentation for order code R900937356.