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Kunshan Ruiteng Precision Automation Co., Ltd

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TOKYKEIKI Electromagnetic Valve DG4M4-34C-200AC-20-JA

NegotiableUpdate on 05/13

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Overview

TOKYOKEIKI solenoid valve DG4M4-34C-200AC-20-JA, TOKYOKEIKI solenoid valve DG4M4, origin: Japan, hydraulic solenoid directional valve Kunshan Ruiteng Precision Automation Co., Ltd., professional agent for TOKIMEC blade pump, TOKIMEC solenoid valve, TOKIMEC plunger pump, TOKIMEC plug-in valve, TOKIMEC

Product Details

Tokyo CalculatorTOKYKEIKI Electromagnetic Valve DG4M4-34C-200AC-20-JA

1、 Complete model analysis

DG4M4-34C-200AC-20-JA

DG4M4Series name - Ultra small wet electromagnetic hydraulic directional valve, plate installationTokyo Jichi Co., Ltd
3Valve core form -3-position 4-way, dual electromagnet, spring centering(Automatic return to neutral position upon power failure)Tokyo Jichi Co., Ltd
4Valve core specifications - special customized oil hole/flow specifications to meet specific circuit control requirementsTokyo Jichi Co., Ltd
CSpring Form - Standard Spring for Medium SizesTokyo Jichi Co., Ltd
200ACElectrical specifications -AC 200V, 50/60Hz dual frequency universal, resin sealed coilTokyo Jichi Co., Ltd
20Design Number - Standard Structure and Dimensional CodeTokyo Jichi Co., Ltd
JAFactory standard specification identification (in accordance with the original quality specifications of Tokyo Jichi)Tokyo Jichi Co., Ltd

2、 Core technical parameters

Max. Work pressure：21 MPaTokyo Jichi Co., Ltd
max.traffic: About7 L/min(02 specification)Tokyo Jichi Co., Ltd
Applicable MediumMineral oil, water ethylene glycol hydraulic oil (F3 specification compatible with phosphate ester oil)Tokyo Jichi Co., Ltd
medium temperature：-20°C ~ 70°C
Installation typeStacked plate installation (gasket sealing)Tokyo Jichi Co., Ltd
response frequency：max. 500 times/minute
insulation classF level
Coil protectionResin injection molding, moisture-proof, dustproof, and oil splash proofTokyo Jichi Co., Ltd

Tokyo CalculatorTOKYKEIKI solenoid valveDG4M4-34C-200AC-20-JA

3、 Function and Features

Ultra miniaturization designCompact size, compatible with compact hydraulic stations and equipment integrationTokyo Jichi Co., Ltd
Wet electromagnetic coilLow noise, low power consumption, fast response, long lifespan, no risk of external leakage
Dual frequency universal coilAC 200V is directly compatible with 50Hz/60Hz without the need to change wires or coilsTokyo Jichi Co., Ltd
Spring centering is reliableThree dual electromagnets, return to neutral position upon power failure to prevent system misoperationTokyo Jichi Co., Ltd
Strong pressure stabilitySuitable for medium and high voltage precision control circuits, suitable for machine tools and automation equipmentTokyo Jichi Co., Ltd

4、 Installation and usage precautions

Before installation

Rinse the pipeline (recommended ≥ 0.3MPa), remove welding slag, iron filings, and residual sealant to avoid valve core sticking.
Check whether the voltage (AC200V), pressure, flow rate, medium and working conditions match, and strictly prohibit the use of parameters beyond the limit.
Confirm the P (inlet), A/B (working port), and T (return) port markings on the valve body,Cannot be reversed.

during installation

Fix the valve body and then tighten the joint,Do not apply excessive torqueIt is prohibited to directly apply force to the coil components that may cause deformation.
When sealing with threads,Leave 1-2 teeth without wrapping with adhesive tapeTo prevent debris from entering the valve; Do not use excessive liquid glue.
Avoid strong sources of vibration; If unavoidable, make the vibration direction perpendicular to the direction of valve core action.
The back pressure of the return oil T port shall not exceed the standard,Prevent valve core misoperation and increased internal leakageTokyo Jichi Co., Ltd.

Electrical and Operation

Voltage fluctuations should be controlled within * * ± 10% * *, and it is recommended to install circuit breakers/fuses to prevent overload and short circuits.
Double electromagnetic coils are strictly prohibited from being powered on simultaneouslyWhen switching, first disconnect one side and then connect the other sideTokyo Jichi Co., Ltd.
Under high pressureAvoid prolonged and continuous power onTo prevent valve core sticking and switching failureTokyo Jichi Co., Ltd.
The manual emergency button is only used for debugging,When the back pressure is high, the operating force will significantly increase.

Maintenance and Safety

Before maintenance/disassemblyPower must be cut off and pressure releasedHang a warning sign and wear protective gear.
Regular inspection: Check for leaks, abnormal heating of coils, abnormal noise, and slow commutation.
After the seals, springs, and valve cores are worn outBe sure to use original spare parts for replacement.
Long term disuse: Drain stored oil, prevent moisture and dust; Perform several empty load tests before reactivating.

5、 Typical applications

Machine tools: hydraulic fixtures, worktable, tool magazine, spindle balancing cylinder
Injection molding/die-casting machine: ejector pin, core pulling, mold thickness adjustment, safety door control
Automation line: Direction and speed control of small hydraulic cylinders/motors
Precision control circuits for light industry machinery: hydraulic punching machines, packaging machines, and textile machinery

6、 Common replacement models (same series)

Voltage change:

DC24V：DG4M4-34C-24DC-20-JA
AC100V：DG4M4-34C-100AC-20-JA

Change of valve core form (3-digit dual electromagnet):

Standard O-type function: DG4M4-30C-200AC-20-JA
Other customization functions: DG4M4-36C-200AC-20-JA

Tokyo CalculatorTOKYKEIKI Electromagnetic Valve DG4M4-34C-200AC-20-JA

Tokyo Keiki Solenoid Valve DG4M4-34C-200AC-20-JA

Tokyo Keiki (Tokimec) DG4M4-34C-200AC-20-JA is a high-performance miniature solenoid directional valve, specifically engineered for hydraulic systems that demand compact installation space and stable, precise directional control. It adopts a resin-molded dual-frequency coil design, fully compatible with 50/60Hz power supply without rewiring, and features a wet armature structure for efficient, low-noise, and long-term reliable operation. This valve is widely used in machine tools, industrial automation lines, injection molding machines, die casting equipment, and other hydraulic circuits requiring compact and precise control.

1. Complete Model Interpretation

Model: DG4M4-34C-200AC-20-JA

DG4M4: Series Name – Miniature solenoid directional valve (gasket mounting, wet armature type), designed for medium and high-pressure hydraulic systems, with a compact structure that saves installation space.
3: Spool Type – Spring-centered type (3-position, double solenoid), ensuring the spool automatically resets to the neutral position when the solenoid is de-energized, avoiding system misoperation and improving operational safety.
4: Spool/Spring Arrangement – Special customization specification, with a tailored spool configuration to meet specific flow and directional control needs of different hydraulic circuits.
C: Additional Configuration – Standard configuration, compatible with common hydraulic media and general industrial installation scenarios, no additional customization required for conventional applications.
200AC: Solenoid Voltage – AC 200V, dual-frequency (50/60Hz) resin-molded coil, corrosion-resistant and moisture-proof, adapting to different power supply environments without rewiring.
20: Design No. – Standard design code, representing the basic structural parameters, manufacturing standards, and material specifications of the valve body.
JA: Special Mark – Standard product identification, indicating compliance with Tokyo Keiki’s original factory quality standards, technical specifications, and after-sales service requirements.

2. Core Technical Specifications

Item	Specification
Maximum Operating Pressure	21 MPa (suitable for medium and high-pressure hydraulic systems)
Maximum Flow Rate	Approx. 7 L/min (matches the miniature size, meeting the flow demand of small to medium hydraulic actuators)
Solenoid Voltage	AC 200V, dual-frequency (50/60Hz), resin-molded coil with two terminals
Applicable Fluid	Mineral oil-based fluid, water-glycol-based fluid; optional for phosphate ester fluid (marked with 'F3' in the model)
Operating Temperature Range	-20°C ~ 70°C (adapts to most industrial working environments)
Mounting Type	Gasket mounting (compact structure, easy to install and disassemble, convenient for maintenance)
Maximum Switching Frequency	500 cycles/min (ensures rapid response of the hydraulic system)
Insulation Class	Class F (meets industrial insulation standards, ensuring safe operation under long-term use)

3. Main Functions & Characteristics

Compact & Space-Saving Design

Adopting a miniature structural design, the valve features small volume and light weight, making it ideal for hydraulic systems with limited installation space. The gasket mounting method simplifies the installation process, reduces the overall layout space of the hydraulic circuit, and facilitates later maintenance and replacement.

Stable & Efficient Operation

Equipped with a wet armature structure, it has the advantages of low energy consumption, low noise, and fast response. The resin-molded coil is corrosion-resistant, moisture-proof, and dust-proof, ensuring stable operation in harsh industrial environments (such as high humidity, dust, and temperature fluctuations). The dual-frequency coil design eliminates the need for rewiring when switching between 50Hz and 60Hz power supplies, improving the versatility and applicability of the valve.

Reliable Directional Control

The spring-centered spool design (3-position, double solenoid) ensures that the spool automatically returns to the neutral position when the solenoid is de-energized, effectively preventing misoperation of the hydraulic system and protecting the actuator and related components. The customized spool arrangement (marked with '4') can be adapted to specific directional control requirements of different hydraulic circuits, enhancing the flexibility of application.

Wide Compatibility & High Durability

Compatible with multiple hydraulic media, it can be used in various industrial scenarios. It can be perfectly matched with other Tokyo Keiki hydraulic components (such as pumps, valves, and cylinders) to form a complete and efficient hydraulic control system. The valve body is made of high-quality materials, with strong pressure resistance and wear resistance, ensuring long service life and reducing maintenance costs.

4. Typical Application Scenarios

Machine tool hydraulic systems: Directional control of feed mechanisms, clamping mechanisms, tool changing mechanisms, and coolant control systems.
Injection molding machines/die casting machines: Control of mold opening, mold closing, ejection, and material feeding mechanisms.
Automatic production lines: Directional control of hydraulic actuators (such as cylinders and motors) in assembly lines, conveying lines, and sorting equipment.
Light industrial hydraulic equipment: Compact hydraulic systems requiring precise directional control, such as small hydraulic presses, packaging machinery, and textile machinery.

5. Model Selection & Replacement Recommendations

Same Series Alternative Models (Voltage Variation)

DC 12V: DG4M4-34C-12DC-20-JA
DC 24V: DG4M4-34C-24DC-20-JA
AC 100V: DG4M4-34C-100AC-20-JA

Same Series Alternative Models (Spool Type Variation)

Spring offset A type (2-position, single solenoid): DG4M4-32A-200AC-20-JA
Spring offset B type (2-position, single solenoid): DG4M4-32B-200AC-20-JA
Standard spring-centered type (3-position, double solenoid): DG4M4-30C-200AC-20-JA

Functional Equivalence

This valve can directly replace other Tokyo Keiki DG4M4 series solenoid valves with the same installation size, pressure, and flow parameters. It is also compatible with most standard hydraulic circuits of other brands, reducing replacement costs and maintenance time.