Hydraulic Solenoid Directional Control Valve for Heavy Machine

Product Description

The D3W series is a direct-acting electromagnetic directional valve of the NG10 (CETOP 05 / NFPA D05) specification launched by Parker. It is specifically designed for industrial hydraulic systems that demand high performance and reliability. This series of valves achieves extremely low pressure loss and outstanding energy efficiency through an optimized flow channel design. With a maximum working pressure of up to 350 bar and a maximum flow rate of 150 L/min, it is an ideal choice for various general hydraulic applications.

Core advantages and value

• High efficiency and energy saving, with economical operation: The optimized internal flow channel design significantly reduces pressure loss. While ensuring a high flow rate, it effectively reduces system energy consumption, enabling more economical long-term operation.

• High pressure and high flow, outstanding performance: With a working pressure of up to 350 bar and a flow capacity of 150 L/min, this unit provides powerful and stable power control for the system, meeting the demanding requirements of various working conditions.

• Compact and reliable, with a proven track record: Featuring a sturdy cast iron valve body and a mature compact design, this product embodies Parker's long-standing experience in the hydraulic field, ensuring stable operation in harsh industrial environments over an extended period.

• Flexible adaptation, wide range of options: Offers a variety of configuration choices, including two or three-way valve cores, multiple spool functions, single electromagnet (with spring return) or dual electromagnets for driving, as well as a wide range of coil voltage options. It can perfectly adapt to the majority of hydraulic control systems.

• Safe and intelligent, in accordance with instructions (optional): An optional sensor-based position control function is available, enabling real-time monitoring of the starting and ending positions of the valve core. This model complies with the Machinery Directive 2006/42/EC and is particularly suitable for safety-critical applications such as mold locking in injection molding machines.

• Installation and maintenance are simple: It is installed using the subplate mounting method, and the installation position is not restricted (horizontal installation is recommended). The standard configuration includes a manual emergency operation function, and it uses wet-type contactless electromagnets, which have a long service life and are easy to maintain.

Typical application fields

• General industrial hydraulic systems

• Plastic machinery (such as injection molding machines)

• Machine tools and equipment

• Die-casting machine

•  Testing equipment

• As well as other mobile or stationary equipment that requires reliable directional control.

Main technical specifications

• Model number: NG10 (CETOP 05 / NFPA D05)

• Maximum working pressure: For ports P, A, B: 350 bar; For port T: 210 bar

• Maximum flow rate: Depending on the valve core type, 60 - 150 L/min

• Operation mode: Direct actuation, electromagnetic drive

• Installation method: Bottom plate installation

• Valve body material: Cast iron

• Sealing material: NBR (nitrile butadiene rubber) or FPM (fluorine rubber), suitable for mineral hydraulic oil or water-ethylene glycol fluids

• Working temperature range: Generally -25°C to +60°C (depending on the sealing type)

• Switching frequency: Up to 10,000 times per hour

• Protection level: IP65 (when using the correct plug connector)

• Meets standards: ISO 4401, DIN 24340, CETOP RP 121-H, NFPA D05, etc.

Why choose the D3W series?

The D3W series is not merely a product; it is a proven reliable solution that has been tested in the market. Its features of high efficiency, energy saving, and durability, combined with Parker's global technical support and supply network, can help you reduce the total cost of the system, improve the operational efficiency and reliability of the equipment. Whether it is for standard applications or special safety requirements, the D3W series can provide matching configurations.

Obtain product support and selection

Our technical team is always ready to provide you with product selection, technical consultation and after-sales support services. Please feel free to contact us to choose the most suitable control components for your hydraulic system.

FAQ

Q1: Is the D3W solenoid valve direct-acting or pilot-operated? What are its flow and pressure ranges?

A1: The D3W series is a direct-acting electromagnetic directional valve. This means that the valve core is driven directly by the force generated by the electromagnet, resulting in fast response and a compact structure. Its performance parameters are excellent, with a maximum working pressure of up to 350 bar and a maximum flow rate (depending on the valve core's performance) of up to 150 L/min, enabling it to be widely used in medium-high pressure and medium-large flow hydraulic systems.

Q2: How do I select the appropriate spool function (positioning function) for my system?

A2: The spool function (such as the O-type, Y-type, P-type of a three-position four-way valve) determines the connection state of each oil port when the valve is not in operation (in the neutral position), directly affecting the safety and energy consumption of the equipment. For example:

• O-type: All oil ports are closed, the actuator is locked, suitable for applications where the position needs to be maintained.

• Y-type: The A and B ports connect to the T port (fuel tank), while the P port is closed. The actuator can float under the action of external force.

• P type: The P port is connected to both the A and B ports, while the T port is closed. This type is commonly used in differential circuits.

You need to make the selection based on factors such as the equipment's stopping action requirements and the pump's unloading needs. Our technical team can provide professional selection suggestions.

Q3: There are various types of coil voltages. How should I choose one?

A3: The primary principle for choosing the coil voltage is to match your control circuit power supply. D3W offers a wide range of AC (alternating current) and DC (direct current) voltage options (such as DC24V, AC110V, AC220V, etc.). The DC (DC24V) coil is the preferred choice for industrial applications due to its low heat generation, long lifespan, and smooth switching. Please make sure to confirm the voltage and type of your PLC output or control power supply. Incorrect voltage can cause the coil to burn out.

Q4: Can this valve be installed at any position?

A4: Yes, the D3W valve is installed using a base plate, and theoretically the installation position is not restricted. However, it is strongly recommended to install it horizontally (with the electromagnet facing upwards). This helps ensure that the valve core moves freely and avoids impurities from depositing in the valve body, thereby ensuring the long-term stable operation of the valve and extending its service life.

Q5: What is the "inductive position control" function? Which applications require it?

A5: This is an optional safety monitoring function. It uses inductive proximity switches integrated inside the valve body to detect and feedback the actual position of the valve core (start point and end point) in real time, confirming whether the valve has been accurately switched to the correct position. This is crucial for safety-oriented applications, such as the mold clamping circuit of an injection molding machine. This function enables the D3V (with inductive model) to meet the strict mechanical safety directive requirements and prevent safety accidents caused by valve jamming and failure to change direction.

Q6: What could be the reasons for the sluggish or non-directional movement of the valve, and how can we troubleshoot it?

A6: The common causes and troubleshooting steps are as follows:

1. Electrical issue: First, check if the electromagnet coil is powered on, if the voltage is correct, and if the wiring is secure. You can use a multimeter for measurement.

2. Mechanical/hydraulic problem: Check if the system oil pressure is within the valve's allowable range; if the cleanliness of the oil is up to standard (pollution may cause the valve core to get stuck); finally, you can use the manual emergency operation button of the valve for pushing and testing. If it can be switched direction manually, the problem is mostly in the circuit; if manual operation cannot push it, it may be that the valve core is stuck or the system pressure is abnormal.

Q7: What should be noted when maintaining and replacing the electromagnet?

A7: The D3W uses wet-type pin-type electromagnets, which have a long lifespan and generally require no maintenance. If replacement is needed:

1. It must be done after the system is powered off and the pressure is completely released.

2. After removing the old coil, check if the pins and sealing ring are in good condition.

3. When installing the new coil, ensure that the pins are aligned, the screws are evenly tightened to achieve a good electrical connection and IP65 protection level.

Q8: Can this valve be used with water glycol or other non-flammable hydraulic oils?

A8: Yes, but it must be specified clearly when ordering. The standard D3W valve uses NBR (nitrile butadiene rubber) seals and is suitable for mineral hydraulic oil. If the medium is water glycol, HFA, HFB, etc., which are non-flammable liquids or phosphate esters, a model with FPM (fluorine rubber) seals must be selected to prevent the sealing material from being corroded and expanded by the medium and thus failing.