Huade 4WMM10E10B Manual Directional Valve

Huade 4WMM10E10B is a reliable and economical standard electromagnetic directional valve. The E-type mid-range function (pump unloading, cylinder locking) is the core basis for selection. Ensuring the cleanliness of the system oil, correctly connecting the drain port, and providing stable voltage are key to ensuring its long-term, fault free operation.

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1. Model interpretation: 4WMM10E10B (according to the naming convention of Rexroth/Wald)
4: The number of working ports of the valve. It represents a four-way valve, which has four main oil ports: P (pressure oil port), T (return oil port), A (working port A), and B (working port B). This is the most commonly used form of directional valve.
W: The functional type of the valve. Represents a "wet" electromagnet, and the valve core position can be memorized (with positioning function). More specifically, it indicates that this valve is solenoid operated and spring reset (single solenoid).
MM: Electromagnetic operation type. The first M represents a wet electromagnet, and the second M represents that the electromagnet is of direct current (DC) specification (if it is "A", it represents alternating current (AC)). Wet electromagnetic coil immersed in oil has good heat dissipation, long service life, and low noise.
10: Diameter specifications. The nominal diameter of the representative valve is 10mm. The corresponding oil port connection thread is usually G1/4 "(or M14 × 1.5). This is the standard specification for small flow valves.
E: Valve core centering function. This is one of the most crucial features. The "E" function means:
When in neutral position: P port is connected to T port, A port and B port are closed.
Features: Hydraulic pump unloading (pressure close to zero), saving energy and reducing heat generation. The A and B ports of the actuator (oil cylinder) are closed, and the piston can be locked at any position (due to valve leakage, the pressure holding effect is limited for a long time, and an additional hydraulic control check valve is required).
10: Design code/series number. Usually refers to the design version or series of valves, here referring to the classic WE10 series platform.
B: Voltage/electrical specification code. This requires checking the specific sample of Huade. Usually:
B "may represent 24V DC (most commonly used).
Other codes include: C (AC 110V), D (AC 220V), F (DC 12V), etc.
Important: When ordering or replacing, it is necessary to confirm the accurate voltage and plug form corresponding to this code (such as DIN43650 standard socket).
Simple understanding: This is a single solenoid directional valve with a diameter of 10mm, E-type neutral function (P → T, A/B locking), and DC 24V wet solenoid control.

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