3FREEZ10B-1X/70L2G24K31A1MM

The 3FREEZ10B-1X/70L2G24K31A1MM flow control valve belongs to the 3FRE Flow Control Valves series and is built by Bosch Rexroth. It is installed in hydraulic automation circuits to meter fluid in three-way arrangements where proportional regulation is required. The valve operates as a 3-way unit, so it splits inlet flow between the service and tank ports according to a command signal. A proportional control stage adjusts the orifice continuously, which enables closed-loop speed or pressure control on connected actuators. The body size is NG10, offering a passage area suited for medium flow machinery. Subplate mounting follows interface ISO 4401-05-04-0-94, which simplifies replacement within standardized manifolds. At a pressure drop of 8 bar the valve passes 70 l/min, allowing moderate flow rates without excessive energy loss. The assembly withstands working pressures up to 250 bar, meeting common industrial system limits. A linear flow characteristic keeps the relationship between command signal and flow predictable across the stroke. Integrated on-board electronics execute the drive function inside the housing, removing the need for a separate amplifier card.

Electronic supply is 24 V DC, so the valve can share a power rail with standard PLC and sensor hardware. Electrical wiring is completed through a DIN 43563-AM6 plug, and the contact arrangement follows connector coding K31 to prevent mismatching with other field devices. An inductive position transducer monitors spool travel, enabling accurate feedback for the proportional controller. The sealing elements are NBR, making the unit compatible with mineral oil hydraulic fluids in categories HL and HLP; this seal choice limits swell and maintains leakage control over long duty cycles. A non-return valve is not included, so reverse flow must be handled by external components when required. Likewise, a compensator closing fixture is not fitted, which means pressure compensation relies solely on upstream circuit design. The absence of these auxiliary components reduces overall pressure drop and simplifies manifold machining, while the remaining features keep the valve straightforward to service and integrate in automated hydraulic equipment.