Burkert 6213EV Solenoid Valve | 00178899 00220581 00178902 | Servo-Assisted Valve

The 6213EV Series solenoid valves by Chengyuan Hydraulic are high-performance servo-assisted diaphragm valves fully compatible with Burkert S.EV industrial standards. Featuring core models such as 00178899, 00220581, and 00178902, this series utilizes unique Spring-coupled diaphragm technology, which allows the valve to open fully even at Zero Differential Pressure (0 bar). These valves are characterized by their vibration resistance, quiet operation, and rapid response times. As a premier interchangeable solution, all Chengyuan 6213EV units undergo 100% leak and functional testing to ensure 100% original-place interchangeability for original Burkert installations.

Technical Specifications :

• Core Series: 6213EV (S.EV Series)

• Example Part Numbers: 00178899, 00178900, 00178902, 00220581, 00220587

• Operating Principle: Servo-assisted diaphragm

• Orifice Size: $10\text{ mm}$ to $40\text{ mm}$

• Pressure Range: $0\text{–}10\text{ bar}$ (up to $12\text{ bar}$ with specific coils)

• Body Material: Brass (acc. to DIN EN 50930-6) or Stainless Steel 316L

• Seal Materials: NBR, FKM (Viton), or EPDM

• Control Voltages: 24V DC, 230V AC (50-60Hz)

• Protection Rating: IP65

Key Technical Advantages:

• Zero Differential Pressure Opening: Unlike standard servo valves that rely on fluid pressure to lift the diaphragm, the 6213EV uses a direct coupling between the armature and diaphragm. This guarantees reliable operation in vacuum or gravity-fed systems.

• Anti-Vibration & Water-Hammer Free: The valve seat and diaphragm movement are fluid-dynamically optimized to dampen the closing stroke. This significantly reduces “water-hammer” noise and protects downstream sensors from pressure transients.

• Integrated Molded Diaphragms: The diaphragms are manufactured using a high-performance molding process with reinforced edges. This ensures extreme fatigue resistance and maintains seal integrity over millions of cycles even in high-frequency applications.

• High-Efficiency Solenoid Actuator: The coils are designed for low power consumption with optimized magnetic flux for high starting force. The epoxy-encapsulated housing provides excellent protection against moisture and corrosive environments.

Application Areas:

• Industrial Cooling: Automatic switching and makeup water control for machine tool cooling loops.

• Cleaning Systems: Fluid distribution in industrial washers and high-pressure autoclaves.

• Fuel Supply: Fuel shut-off for engine test stands or boiler systems (Light oil/Diesel).

Expert Maintenance Tips:

• Mounting Orientation: To prevent debris from settling on the diaphragm, it is highly recommended to mount the solenoid vertically with the actuator on top.

• Media Compatibility: For part numbers like 00220581, verify the chemical compatibility. Use FKM for oils and EPDM for hot water/detergents (avoid mineral oils with EPDM).

• Pilot Orifice Maintenance: Servo-assisted valves are sensitive to particulates. Install a filter with a minimum $50\mu\text{m}$ rating upstream to prevent the pilot orifice from clogging, which could cause the valve to fail to close.