4WRZ32E1-520-70/6EG24N9K4/D3M
4WRZ32E1-520-70/6EG24N9K4/M
4WRZ32E1-360-70/6EG24N9TK4/D3M Electromagnetic valve proportional hydraulic electro-hydraulic directional valve German made hydraulic valve

FAQ:

1. How to adjust the dead band of a 4WRZ valve?
Dead band adjustment is typically performed via the control system (e.g., offsetting the input signal); consult the valve’s technical manual for specific procedures .

2. What is the function of the centering spring in 4WRZ valves?
The centering spring ensures the main spool returns to the neutral position when solenoids are de-energized, providing fail-safe operation .

3. Can 4WRZ valves handle pressure spikes?
They are rated for maximum operating pressure (315-350 bar) but should be protected with pressure relief valves to prevent damage from excessive spikes .

5. Maintenance & Servicing

4. What is the recommended maintenance interval for 4WRZ valves?
Routine inspection every 6 months; maintenance frequency increases with harsh operating conditions (e.g., high temperature, dirty fluid) .

5. How to replace the seal kit on a 4WRZ valve?
Disassemble the valve per the manual, remove old seals, clean seal grooves, install new seals (NBR or FKM, per fluid compatibility), and reassemble .

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