Rexroth solenoid valve 4WE6D6X/EG24N9K4 in stock

Brand

REXROTH/German Rexroth

Flow Direction

Other

3C Valve Category

Industry

Application Areas

Chemical, Petroleum, Mining, Road/Rail/Shipbuilding, Comprehensive

Common Rexroth solenoid valve malfunctions include the solenoid valve not operating. Troubleshooting should be done from the following aspects:

(1) Loose or detached solenoid N-connector. The solenoid valve will not receive power. Tighten the wire.

(2) Burned-out solenoid coil. Disconnect the solenoid valve wiring and measure with a multimeter. If an open circuit is detected, the solenoid coil is burnt out. This can be caused by the coil being subjected to NJ (non-electric shock), resulting in poor insulation and magnetic leakage, leading to excessive current and burnout. Therefore, prevent rainwater from entering the solenoid valve. Additionally, an overly stiff spring, excessive reaction force, or insufficient coil turns can also cause burnout.

(3) Solenoid valve jamming. The clearance between the valve sleeve and valve core of the solenoid valve is very small. When mechanical impurities are introduced or the valve body is rusted, it can easily jam. The fundamental solution is to disassemble the solenoid, remove the N-core and valve core sleeve, and clean them with CCI4 to ensure the valve core moves freely within the valve sleeve. During disassembly, pay attention to the assembly sequence of each component and the location of external wiring to ensure correct reassembly and wiring. (5) If it is a pilot-operated solenoid valve, check if the differential pressure in the pipeline is too small. If the differential pressure is too small, the solenoid valve will not work properly. In this case, a direct-acting solenoid valve should be selected. If the differential pressure is too large, far exceeding the design value of the solenoid valve N, it will also not work properly. In this case, a high-performance solenoid valve should be used.

(6) If dirt in the pipeline blocks the small hole of the pilot valve, the pilot valve cannot open properly, and the main valve cannot open in time. The valve body can be disassembled, the dirt cleaned, and reassembled to work properly.

(7) In addition, solenoid valves are generally installed horizontally. If they are side-mounted, it may cause the valve to not close tightly, i.e., internal leakage. Side-mounting should be avoided as much as possible.

Rexroth solenoid valves and all stainless steel are preferred; for highly corrosive media, diaphragm type valves must be selected. For neutral media, solenoid valves with copper alloy valve body material should also be selected. Otherwise, rust chips will often fall off the valve body, especially in situations where the operation is infrequent. Copper material cannot be used for ammonia valves. 2. Explosive environments: Products with the appropriate explosion-proof rating must be selected. For outdoor installations or dusty environments, waterproof and dustproof models should be selected.

3. The nominal pressure of the solenoid valve should exceed the maximum working pressure in the pipe.

Applicability of Rexroth solenoid valves:

1. Media characteristics

1) Different types of solenoid valves should be selected for gaseous, liquid, or mixed states;

2) Different specifications of products should be used for different media temperatures, otherwise the coil will burn out, the seals will age, and the lifespan will be severely affected;

3) Media viscosity is usually below 50 cSt. If it exceeds this value, a multi-functional solenoid valve should be used when the nominal diameter is greater than 15mm; a high-viscosity solenoid valve should be used when the nominal diameter is less than 15mm.

4) When the cleanliness of the media is not high, a backwash filter valve should be installed before the solenoid valve. When the pressure is low, a direct-acting diaphragm solenoid valve can be selected;

5) If the media is directional and backflow is not allowed, a double-acting solenoid valve is required.

Rexroth solenoid valve selection should first follow the four principles of safety, reliability, applicability, and economy, and then...

Based on six aspects of current... The selection of Rexroth solenoid valves is based on the following factors: operating conditions (i.e., pipeline parameters, fluid parameters, pressure parameters, electrical parameters, operating mode, and special requirements). Selection criteria:

1. Based on pipeline parameters: nominal diameter (DN) and connection type.

1) Determine the nominal diameter (DN) based on the pipeline's inner diameter or flow requirements.

2) For connection type, generally, >DN50 requires a flange connection; ≤DN50 can be selected freely according to user needs.

2. Based on fluid parameters: material and temperature group.

1) Corrosive fluids: corrosion-resistant solenoid valves and all-stainless steel are recommended; ultra-clean edible fluids: food-grade stainless steel solenoid valves are recommended;

2) High-temperature fluids: solenoid valves made with high-temperature resistant electrical and sealing materials should be selected, and piston-type valves should be chosen. 3) Fluid State: Generally, it can be gaseous, liquid, or a mixture, especially when the diameter is greater than DN25, it is essential to distinguish between them;

4) Fluid Viscosity: Generally, any fluid can be selected below 50 cSt. If it exceeds this value, a high-viscosity solenoid valve must be selected.

3. Selection of Solenoid Valves Based on Pressure Parameters: Principle and Structure

1) Nominal Pressure: This parameter has the same meaning as other general valves, determined by the nominal pressure of the pipeline;

2) Working Pressure: If the working pressure is low, a direct-acting or step-direct-acting principle must be selected; when the minimum working pressure difference is above 0.04 MPa, direct-acting, step-direct-acting, and pilot-operated types can all be selected.

4. Electrical Selection: AC220V or DC24V should be preferred for convenience.

5. Selection Based on Continuous Working Time: Normally Closed, Normally Open, or Continuously Energized

1) When the solenoid valve needs to be open for a long time, and the continuous time... 1) For periods longer than the closing time, choose a normally open type;

2) For periods short or infrequent opening and closing, choose a normally closed type;

3) However, for some safety protection applications, such as furnace and kiln flame monitoring, a normally open type cannot be selected; a type that can be continuously powered should be chosen.

6. Select auxiliary functions according to environmental requirements: explosion-proof, check valve, manual operation, waterproof mist, water spray, and submersible.

Rexroth solenoid valves (Germany) - In Stock

4WEH 16 G7X/6EG24N9ETK4 R900926886

4WEH 16 G7X/6EG24N9K4 R900926378

4WEH 16 H7X/6EG24N9ETK4 R900926207

4WEH 16 H7X/6EG24N9K4 R900933198

4WEH 16 J7X/6EG24N9ETK4 R900922085

4WEH 16 J7X/6EG24N9K4 R900925580

4WEH 16 M7X/6EG24N9ETK4 R900926887

4WEH 16 M7X/6EG24N9K4 R900929281

4WEH 16 R7X/6EG24N9ETK4 R900925977

4WEH 16 R7X/6EG24N9K4 R900929283

4WEH 16 T7X/6EG24N9ETK4 R900926888

4WEH 16T7X/6EG24N9K4 R900942302

4WEH 16 V7X/6EG24N9K4 R900712908

4WEH 16 W7X/6EG24N9ETK4 R900925961

4WEH 16 W7X/6EG24N9K4 R900927092

4WEH 16 K7X/6EG24N9K4 R900963501

4WEH 16 Z7X/6EG24N9K4 R900939796

4WEH 16 HC7X/6EG24N9K4 R900956808

4WEH 16 HD7X/6EG24N9ETK4 R900922079

4WEH 16HD7X/6EG24N9K4 R900925823

4WEH 22 C7X/6EG24N9ETK4/B10 R900722936

4WEH 22 C7X/6EG24N9K4 R900930928

4WEH 22 D7X/6EG24N9ETK4/B10 R900951901

4WEH 22 D7X/6EG24N9K4 R900920169

4WEH 22 E7X/6EG24N9ETK4/B10 R900931338

4WEH 22 E7X/6EG24N9K4 R900981655

4WEH 22 G7X/6EG24N9ETK4/B10P4.5 R900930144 4WEH 22 G7X/6EG24N9K4 R900927611

4WEH 22 H7X/6EG24N9ETK4/B10P4.5 R900730904

4WEH 22 H7X/6EG24N9K4 R900934810

4WEH 22 J7X/6EG24N9ETK4/B10P4.5 R900932049

4WEH 22 J7X/6EG24N9K4 R900916452

4WEH 22 M7X/6EG24N9K4 R900766705

4WEH 22 Q7X/6EG24N9ETK4/B10 R900951218

4WEH 22 Q7X/6EG24N9K4 R900747704

4WEH 22 R7X/6EG24N9ETK4/B10 R900932992

4WEH 22 R7X/6EG24N9K4 R900923680

4WEH 22 W7X/6EG24N9ETK4/B10 R900956272

4WEH 22 W7X/6EG24N9K4 R900978642

4WEH 22 HD7X/6EG24N9ETK4/B10 R900926507

4WEH 22 HD7X/6EG24N9K4 R900925823

4WEH 22 HK7X/6EG24N9ETK4/B10 R900753578

4WEH 22 K7X/6EG24N9ETK4/B10 R900963669

4WEH 22 K7X/6EG24N9K4 R900978132

4WEH 22 Z7X/6EG24N9K4 R900705849

4WEH 32 W6X/6EG24N9K4 R900732830

4WEH 32 HC6X/6EG24N9K4 R900916934

4WEH 32 HDR6X/6EG24N9ETK4/B10 R900968228

4WEH 32 HDC6X/6EG24N9K4 R900949136

H-4WEH 25 C6X/6EG24N9K4 R900924322

H-4WEH 25 D6X/6EG24N9K4 R900907357

H-4WEH 25 E6X/6EG24N9K4 R900932453

H-4WEH 25 G6X/6EG24N9K4 R900936600

H-4WEH 25 H6X/6EG24N9K4 R900949851

H-4WEH 25 J6X/6EG24N9K4 R900929180

H-4WEH 25 Q6X/6EG24N9K4 R900780849

H-4WEH 25 R6X/6EG24N9K4 R900708262

H-4WEH 25 T6X/6EG24N9K4 R900701990

The company mainly deals in European and American brands and can source brands from any European country. For example, key German brands include: BURKERT, DEMAG, HAWE, AVENTICS, HYDAC, PILZ relays, FESTO, IFM door sensors, E+H, HEIDENHAIN, P+F sensors, SICK, TURCK, HIRSCHMANN industrial switches, Henschler, MURR, SCHMERSAL, SAMSON, and EPRO (a subsidiary of Emerson). MOOG (USA), ASCO (USA), MAC (USA), NUMATICS (USA), PARKER (USA), VICKERS (USA), ROSS (USA)

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OMAL (Italy), ATOS (Italy), CAMOZZI (Italy), UNIVER (Italy), Camozzi (Italy)