R901496438 4WREE6W32-3X/V/24F1 German proportional valve Rexroth hydraulic valve

Key Differences & FAQs

1. Q: What is the main difference between R901496438 (W32) and the previous W16 valves?

   A:​ The rated flow capacity. The W32​ variant has a rated flow of 32 L/min​ (at Δp = 10 bar), which is double that of the W16​ (16 L/min) variant. This makes it suitable for applications requiring higher actuator speeds without increasing the pressure drop significantly.

2. Q: Can I use this valve with a ±10V PLC output?

   A:​ No.​ The /24F1​ suffix mandates a 4–20 mA current input. If your controller outputs ±10V, you must use the /24A1​ version (e.g., R901496432) or add a signal converter.

3. Q: What is the advantage of the "W" spool in a high-flow valve?

   A:​ The W spool has overlap​ (positive overlap), which provides a soft start and excellent low-flow metering characteristics even at high maximum flow rates. This is beneficial for applications like press feed circuits or crane hoisting where smooth acceleration is critical.

4. Q: Is an external amplifier required?

   A:​ No.​ This valve features Integrated On-Board Electronics (OBE), which includes the amplifier and closed-loop spool position control. You connect the 24V power and 4–20 mA signal directly to the valve's electrical connector.

5. Q: What is the critical installation note for the drain port?

   A:​ The Y port (drain)​ must be connected directly to the tank without any pressure. It drains internal leakage and provides a reference for the LVDT sensor. A blocked or pressurized drain line will cause erratic valve behavior and potential failure.

6. Q: Is the mounting compatible with other NG6 valves?

   A:​ Yes.​ The "3X"​ designation confirms it uses the standard ISO 4401-03-02-0-05​ interface. It is directly interchangeable with other NG6 "3X" series valves without modifying the subplate.