1. Product Identification

• Product Model: DHF10-224

• Product Type: Two-Position, Two-Way, Normally Closed Hydraulic Solenoid Valve.

• Model Nomenclature: The model number is a standard industry code where "DHF" often denotes a series of hydraulic directional valves, "10" indicates a nominal size or flow capacity, and "224" specifies the configuration, seal type, voltage, and other design details.

2. What Is Its Core Purpose? (Function)
The DHF10-224 is a fundamental directional control valve. Its function is to start or stop the flow of hydraulic fluid in a circuit based on an electrical signal.

• Normally Closed (NC) State: When the solenoid coil is not energized (de-energized), the valve's internal mechanism (spool or poppet) is held in a closed position by a spring. In this state, the flow path between the inlet (P) and outlet (A) ports is blocked, and no fluid can pass through the valve.

• Activated Open State: When an electrical current is applied to the solenoid coil, it generates a magnetic force. This force overcomes the spring pressure, shifting the internal mechanism. This shift opens a flow path between the inlet and outlet ports, allowing hydraulic fluid to pass through the valve to actuate a cylinder, motor, or other component.

• Two-Position, Two-Way: This defines its physical operation:

  • Two-Position: It has only two stable states: ON (Open) and OFF (Closed). It is a simple switching valve.

  • Two-Way: It has two main working ports: one inlet (pressure port P) and one outlet (actuator port A).

3. What Kind of Product Is It? (Product Category)
This valve belongs to several standard hydraulic component categories:

• Hydraulic Solenoid Valve: An electrically operated valve that controls fluid direction.

• Directional Control Valve: A valve designed specifically to direct or stop the flow in a hydraulic system.

• On/Off or Switching Valve: Due to its two-position nature, it is used for simple on/off control rather than proportional flow modulation.

• Inline or Subplate Mounted Valve: It may be designed to be installed directly into a pipe run (inline) or mounted onto a standardized subplate (e.g., following CETOP or NFPA patterns) for easy installation and maintenance.

4. Key Characteristics & Design Features

• Normally Closed Function: This fail-safe design is critical for safety in many applications. If electrical power is lost, the valve automatically closes, stopping fluid flow and motion.

• Simple and Reliable: Its straightforward on/off operation makes it highly reliable for basic control tasks.

• Solenoid Actuation: It allows for easy integration into electrical control systems (PLCs, relays, switches).

• Compact Design: As a standard industrial component, it is designed for space-efficient integration into hydraulic power units and machine manifolds.

• Material Compatibility: The valve body, seals, and internal components are made from materials compatible with standard hydraulic oils and operating pressures.

Summary:
The DHF10-224 is a classic, industrially-standard 2/2-way normally closed solenoid valve. It serves as a fundamental building block in hydraulic systems, providing reliable electrical control over the start and stop of hydraulic flow to cylinders, tools, or clutches. Its normally closed characteristic ensures that the controlled function remains safely off in the event of a power failure. This type of valve is ubiquitous in industrial machinery, mobile equipment, and automation systems for tasks like clamping, indexing, or simple cylinder extension/retraction.