DS5 DS3 DSE DSE3 DSE5 DS3-S20/11N-D24K1 Manually Operated Electric Integrated Directional Control Valve

I. Core Technical Parameters
This hydraulic valve is an electromagnetic directional control valve. It adopts a plate installation structure and complies with the installation dimensions of ISO 4401 standard. The rated working pressure is 350 bar, and the allowable pressure at the return oil port is 25 bar. The nominal flow rate is 75 liters per minute, and the flow loss at the rated pressure is no more than 5%. The control voltage is 24V DC (corresponding to “D24” in the model), the rated power of the electromagnet is 18W, and the action response time is ≤15 milliseconds.Structurally, it adopts a high-strength cast iron valve body, with the valve core made of precision forged material and the sealing parts made of oil-resistant rubber material. The inlet and outlet of the valve body are standard threaded interfaces, compatible with common hydraulic pipelines. The overall weight is approximately 2.1 kilograms, and the compact shape makes it easy to integrate and install.

Compatible with L-HM 46/68 anti-wear hydraulic oil, with an oil viscosity range of 10-400 centistokes; The working environment temperature ranges from -20℃ to 50℃, and the oil working temperature ranges from -20℃ to 80℃. The contamination degree of the oil should reach ISO 4406 20/18/15 grade, and the protection grade should be IP65.

Ii. Working Principle

It adopts the principle of electromagnetic control reversing. The core drives the valve core to move through the on-off power of the electromagnet, changing the oil flow path. The valve body contains an oil inlet (P), A return oil port (T), and two working oil ports (A and B). The valve core can move bidirectionally inside the valve cavity, and the oil port on-off is achieved by switching the sealing surface.

When the electromagnet is energized, the electromagnetic force overcomes the spring force to push the valve core to move, connecting the oil inlet P with the working oil port A and the working oil port B with the return oil port T, thus enabling the hydraulic actuator to act in one direction. When the electromagnet is de-energized, the reset spring pushes the valve core back to its initial position. The oil inlet P is connected to the working oil port B, and the working oil port A is connected to the return oil port T, causing the actuator to act in reverse. Through this on-off switching, the direction control of the actuating elements in the hydraulic system is achieved.

Iii. Product Features and Advantages

It has significant performance advantages. It adopts a precise valve core and valve sleeve in combination, with a leakage rate of ≤0.3 liters per minute and excellent sealing performance. The electromagnet responds rapidly, with an action time of ≤15 milliseconds, enabling high-frequency commutation control. The valve body flow passage has been optimized in design, resulting in low pressure loss. At the rated flow rate, the pressure loss is ≤5 bar, and the system energy efficiency is higher.

Structurally, the cast iron valve body has high strength, strong resistance to impact and vibration, and is suitable for harsh industrial environments. The sealing parts are made of oil-resistant and heat-resistant materials, with a wide working temperature range and a service life of ≥1 million reversing actions. The modular design enables vulnerable parts such as valve cores and seals to be replaced separately, making maintenance convenient and reducing costs.

It has strong adaptability, complies with international installation standards, and can directly replace products of the same specification but from different brands. The electromagnet adopts a low-power design with a rated power of only 18W, achieving a significant energy-saving effect. Supports installation in any direction (with spring return structure), offering high installation flexibility.

Iv. Usage Functions and Purposes

The core function is to control the flow direction of the oil in the hydraulic system, and to achieve actions such as starting, stopping, reversing and pressure holding of hydraulic actuating elements (such as hydraulic cylinders and hydraulic motors). The valve core can be remotely controlled to switch through the on-off signal of the electromagnet, achieving automated operation.

It is widely applied in multiple fields: In the industrial sector, it serves as the reversing control core for injection molding machines and hydraulic presses, enabling directional switching for actions such as mold locking and pressing. In the field of construction machinery, it is compatible with equipment such as excavators and loaders, and controls the lifting and flipping of working devices such as booms and buckets. It is also used for the control of hydraulic circuits in machine tool hydraulic systems, ship deck machinery and agricultural machinery.

V. Applicable Machines and Scenarios

In industrial scenarios, it is compatible with medium-sized injection molding machines (with a working pressure of 200-300 bar and a flow rate of 50-75 liters per minute), controlling the reversing actions of the clamping cylinder and the injection cylinder, and ensuring the response speed to guarantee the efficiency of the injection molding cycle. Compatible with small hydraulic presses (working pressure 250-350 bar), it realizes the lifting and reversing of the pressing piston, and the sealing performance ensures the pressure holding accuracy. In the hydraulic system of machine tools (working pressure 150-250 bar), it controls the direction switching of the tool turret rotation or the worktable movement.

In the construction machinery scenario, it is suitable for small excavators (with a working pressure of 280-350 bar and a flow rate of 60-75 liters per minute), controlling the extension and retraction of the boom and the bucket arm. The anti-vibration design is suitable for the bumpy environment of construction sites. The steering hydraulic system compatible with the loader (working pressure 200-280 bar) enables the bidirectional movement of the steering cylinder. In agricultural machinery, it is used for the lifting control of the tractor suspension system, and its low-temperature resistance is suitable for outdoor operations.

Six. Similar models

Among different specifications and models of the same series, DS3-S15/11N-D24K1 has a slightly smaller diameter, a nominal flow rate of 50 liters per minute, a working pressure of 350 bar, and a weight of approximately 1.8 kilograms. It is suitable for small flow systems. The DS3-S25/11N-D24K1 has a larger diameter, a nominal flow rate of 100 liters per minute, a working pressure of 320 bar, and a weight of approximately 2.5 kilograms. It is suitable for high-flow conditions.

Among the same type but different series, DS3-S20/11N-A220K1 is an AC 220V control type, suitable for industrial grid power supply scenarios. The DS3-S20/11N-M24K1 is a manual emergency control type. When power is off, the valve core position can be manually switched to enhance the reliability of the system. There is also a superimposed installation model, which does not require a separate installation surface and can be directly superimposed on the hydraulic integrated block.

DL3-S1/10V-D24K1
DL5B-S1/10N-D24K1
DL5B-S3/10N-D24K1
DS3-RK/10N-D24K1
DS3-RK/11N-A00
DS3-RK/11N-D220K1
DS3-RK1/10N-D00
DS3-RK1/10N-D24K1
DS3-S1/10N-D24K1
DS3-S1/11N-A230K1
DS3-S1/11N-D24K1
DS3-S1/11N-D24K1
DS3-S1/11N-D24K7
DS3-S10/10N-D24K1
DS3-S10/11N-D24K1
DS3-S10/11V-D24K7
DS3-S2/10N-A230K1
DS3-S2/10N-D24K1
DS3-S2/11N-D24K1
DS3-S20/11N-D24K1
DS3-S3/10N-A230K1
DS3-S3/10N-D24K1
DS3-S3/10N-D28K1
DS3-S3/11N-D24K1
DS3-S3/11N-D24K1
DS3-S4/10N-D220K1
DS3-S4/10N-D24K1
DS3-S4/11N-A230K1
DS3-S4/11N-D28K1
DS3-S6/11N-D24K1
DS3-S6/11N-D24K1
DS3-SA2/10N-D24K1
DS3-SA2/11N-A230K1
DS3-SA2/11N-D24K1
DS3-SA4/11N-D24K1
DS3-SB1/11N-D24K1
DS3-SB3/11N-D24K1
DS3-TA/11N-A230K1
DS3-TA/11N-D24K1
DS3-TA/11N-D24K1
DS3-TA/11V-D24K7
DS3-TA02/10N-D24K1
DS3-TA02/11N-D24K1
DS3-TA02/11N-D24K1
DS3-TA23/10N-A230K1
DS3-TA23/10N-D24K1
DS3-TA23/10N-D28K1
DS3-TA23/10N-D28K1
DS3-TA23/11N-D24K1
DS3-TA23/11N-D28K1
DS3-TB/10N-A230K1
DS3-TB/10N-A230K1
DS3-TB/10N-D24K1/CP
DS3-TB/11N-D24K1
DS3-TB/11N-D24K1
DS3-TB/11V-D24K7
DS3-TB02/10N-D28K1
DS3-TB02/10N-D28K1
DS3-TB23/10N-D24K1
DS5-RK/12N-D220K1
DS5-RK/12N-D220K1
DS5-RK/12N-D24K1
DS5-RK/12N-D24K1
DS5-S1/12N-D24K1
DS5-S1/12V-D24K7
DS5-S1/12V-D28K1
DS5-S2/12N-A230K1
DS5-S2/12N-A230K1
DS5-S2/12N-D24K1
DS5-S2/12N-D24K1
DS5-S2/12V-D24K1
DS5-S20/12N-D24K1
DS5-S3/12N-A230K1
DS5-S3/12N-D24K1
DS5-S3/12N-D24K1
DS5-S3/12N-D24K1/CM
DS5-S4/10N-A230K1
DS5-S4/12N-A230K1
DS5-S4/12N-D24K1
DS5-SA4/12N-D24K1
DS5-TA/12N-A230K1
DS5-TA/12N-D24K1
DS5-TA/12N-D24K1
DS5-TB/12N-D24K1
DS5-TB02/12N-D24K1
DS5-TB02/12N-D28K1
DSA3-TA/11N
DSC3-TA/10N
DSE3-A04/11N-D24K1
DSE3-A08/10N-D24K1
DSE3-A08/11N-D24K1
DSE3-A08/11N-D24K1
DSE3-A16/10N-D24K1
DSE3-A16/11N-D24K1
DSE3-A26/11N-D24K1
DSE3-C04/11N-D24K1
DSE3-C04/11N-D24K1
DSE3-C08/10N-D24K1
DSE3-C08/11N-D24K1
DSE3-C16/11N-D24K1
DSE3-C16/11N-D24K1
DSE3-C26/10N-D24K1
DSE3-C26/11N-D24K1
DSE3-C26/11N-D24K1
DSE3B-C26/10N-D24K1
DSE3G-A26/11N-E0K11/B
DSE3G-A26/11N-E1K11/B
DSE3G-C16/10N-E1K11/B
DSE3G-C26/11N-E0K11/B
DSE3G-Z08/11N-E0K11/C
DSE3J-A12/20N-E0K11
DSE3J-A30/20N-E0K11
DSE3J-A30/20N-E1K11
DSE3J-A30/20N-E1K11
DSE3J-C12/20N-E0K11
DSE3J-C12/20N-E1K11
DSE3J-C30/20N-E0K11
DSE3J-C30/20N-E0K11
DSE3J-C30/20N-E1K11
DSE3J-C30/20N-E1K11
DSE3J-Z30/20N-E0K11
DSE3J-Z30/20N-E0K11
DSE5-A30/10N-D24K1
DSE5-A60/10N-D24K1
DSE5-C30/10N-D24K1
DSE5-C60/10N-D24K1
DSE5-C60/10N-D24K1
DSE5G-A60/10N-E0K11
DSE5G-A60/10N-E1K11/B
DSE5G-C60/10N-E0K11
DSE5G-C60/10V-E0K11/B
DSE5J-A75/20N-E0K11
DSE5J-A75/20N-E1K11
DSE5J-C50/20N-E0K11
DSE5J-C50/20N-E1K11
DSE5J-C75/10N-E1K11
DSE5J-C75/20N-E0K11
DSE5J-C75/20N-E1K11
DSE5J-Z75/20N-E0/K11
DSE5J-Z75/20N-E0K11
DSE5J-Z75/20N-E1/K11
DSH-2B2-04G
DSH-3C2-04G
DSH-3C2-04G-TE-D2-30
DSH-3C6-04G-TE
DSH-3C6-04G-TE-D2-30
DSH3-SK3/11N
DSH3-TAK/11N
DSH5-SK4/30N
DSP7-S1/10N-II/D24K1
DSP7-S3/20N-EE/D24K1
DSP7-TA/20N-IE/D24K1
DSP7H-S3/20N-II/D24K1
DSP7M-TA/20N-II/P/D24K1/MB
DSPE5-A80/11N-II/D24K1
DSPE5-C80/11N-II/D24K1
DSPE5G-A80/11N-ZI/E1K11/B
DSPE5J-C80/20N-EE/E0K11
DSPE5RJ-C80/20N-EE/E0K11
DSPE7-A150/11N-II/D24K1
DSPE7-C100/11N-II/D24K1
DSPE7-C100/11N-II/D24K1
DSPE7-C150/11N-II/D24K1
DSPE7J-A150SA/20N-II/E0K11
DSPE7J-C100/20N-II/E0 K11
DSPE7J-C150/20N-II/E0K11
DSPE7J-C150/20N-ZEE/E0K11
DSPE7J-C150SA/20N-II/E0K11
DSPE7J-RC150/20N-II/E0K11
DSPE8-A200/11N-II/D24K1
DSPE8-C200/11N-II/D24K1Vii. Precautions for Use

When installing, it is necessary to ensure that the flatness of the installation surface is no more than 0.1 millimeters and the roughness is no more than Ra3.2. Leakage should be prevented by fastening with bolts. Before connecting the pipelines, they must be thoroughly flushed to prevent impurities from entering the valve cavity. When wiring the electromagnet, ensure that the voltage matches (24V DC), and the terminal blocks are well sealed to prevent oil stains from entering. The valve body can be installed in any direction, but the model with mechanical positioning needs to be installed horizontally.

Before starting, check the oil level and viscosity to ensure that the oil is within the normal working range. Before powering on, manually push the valve core to check if it is stuck to avoid valve jamming due to installation deviation. When running for the first time, it is necessary to circulate without load for 3 to 5 minutes to expel the air in the system before running under load to prevent cavitation damage to the valve core.

In terms of maintenance, check the wiring and sealing condition of the electromagnet every 300 hours. Check the oil contamination level every 1000 hours. Replace the filter element if necessary. Excessive oil contamination will accelerate the wear of the valve core. Disassemble and inspect the seals every 2,000 hours. Replace them promptly if any aging or damage is found. Compatibility tests must be conducted before mixing oils of different brands. It is strictly prohibited to use oils with excessive water content or impurities.

It is strictly prohibited to power on and operate without oil, otherwise the sealing parts will be burned out. Avoid working for a long time under conditions exceeding the rated pressure to prevent the valve body from cracking. When the electromagnet is frequently turned on and off, the frequency should be controlled to be ≤10 times per second to prevent overheating and damage. When the valve core gets stuck, it is strictly forbidden to forcibly strike the valve body. Instead, disassemble, clean or replace the valve core.

For short-term storage (≤30 days), the surface of the valve body should be cleaned, the oil port should be sealed to prevent foreign objects from entering, and it should be stored in a dry and well-ventilated place. For long-term storage (>30 days), anti-rust oil should be injected into the valve cavity, and moisture-proof treatment should be done for the electromagnet coil. Before reactivation, the valve cavity should be flushed and a no-load test run should be conducted.