R901119906 DBETE-6X/315YG24K31/F1V German hydraulic valve Rexroth proportional valve

FAQ:

1. External Pilot Drain (Y)

   The "Y"​ in the model code indicates external pilot drain. Port Y (pilot control oil drain) must be connected directly to tank with minimal backpressure. High backpressure at port Y will directly reduce the effective cracking pressure (P_effective = P_set - P_Y). This is critical for accurate pressure control.

2. Current Input (4–20 mA)

   The "/F1V"​ suffix indicates the control signal type. Unlike the common /A1V​ (0–10 V) variant, this valve accepts a 4–20 mA​ analog current signal. This is often preferred in industrial environments for its better noise immunity. 4 mA​ typically corresponds to 0 bar, and 20 mA​ to 315 bar.

3. Integrated Electronics (OBE)

   The "E"​ in DBETE​ confirms on-board electronics (OBE). This means the valve contains its own amplifier. You supply 24V DC power​ and the 4–20 mA signal​ directly to the valve's K31 connector, eliminating the need for an external VT-5000 series amplifier.

4. Low Flow Capacity (2 L/min)

   This is a direct-operated seat valve. It provides excellent sealing (zero leakage at closed center) but is strictly limited to 2 L/min. Exceeding this flow will cause excessive pressure override. It is not​ a main system relief valve for high-flow circuits.

5. Critical Installation Notes

   • No External Amplifier Needed:​ Connect 24V DC power and the 4–20 mA signal directly to the valve.

   • Flow Limitation:​ This valve is for pressure control, not for dumping high flows. It is typically used as a pilot valve for larger cartridge valves or for precise pressure control in small circuits.

   • Return Line Pressure:​ Port T and Port Y must be connected directly to tank with minimal backpressure. High backpressure will directly reduce the effective setting pressure.