4WRZ16W6-150-7X/6EG24N9TK4/D3M
4WRZ16W6-100-7X/6EG24N9TK4/M
4WRZ16W6-180-7X/6EG24N9K4/M German Rexroth manufactures proportional hydraulic electro-hydraulic directional valve

FAQ:

1. Why is the 4WREE valve not responding to control signals?
Common causes include: no power supply to the solenoid, damaged wiring, incorrect control signal (e.g., 0-5 V instead of 0-10 V), or a faulty solenoid coil. Check wiring continuity and signal levels first.

2. What causes leakage from the valve’s drain port?
Drain port leakage may result from excessive backpressure (exceeding 5 bar), worn seal rings, or internal spool damage. Ensure the drain line is unobstructed and check seal integrity.

3. Why is the valve’s flow rate inconsistent?
Inconsistent flow can be due to contaminated hydraulic fluid (clogging the valve’s orifices), fluctuating supply pressure, or a damaged proportional solenoid. Filter the fluid and inspect the solenoid for wear.

4. What if the valve overheats during operation?
Overheating may occur from high pressure drops (exceeding the valve’s rated ΔP), insufficient fluid flow through the valve, or a stuck spool. Reduce pressure drop and ensure adequate fluid circulation.

5. Why does the valve produce excessive noise?
Noise can stem from cavitation (low fluid pressure), loose mounting bolts, or air in the hydraulic system. Bleed the system, check for leaks, and ensure the supply pressure is within the recommended range.

Maintenance & Service

Quanzhou Yisenneng Hydraulic Electromechanical Equipment Co., Ltd. has been established for many years and has now developed into an international trading company supplying various hydraulic machinery parts, oil pumps and valves. We are one of the few Chinese companies with multiple products and channels. Main focus: quality assurance! The price is the lowest in the industry! Quality management procedures are implemented in accordance with international standards and are implemented throughout the production process. In terms of channels, we have gathered the most complete variety of products in the world; in terms of quality, all products meet international standards; the lowest price in the industry is the highest; the fastest delivery on credit, and a complete after-sales system; remember Good service is the key to cooperation with customers. We strive to achieve high quality standards, provide competitive prices, and ensure timely delivery. In this way, our products have been recognized by the market and satisfied by customers in the past years. Our goal is to meet the needs of our global customers. Here you can enjoy a one-stop shopping experience, the customer is God, you want all of us, I wish you a happy shopping trip.