Burkert 6213 Type Solenoid Valve | 00178911 00205351 00208422 | Servo-assisted Diaphragm

The Type 6213 servo-assisted diaphragm solenoid valves from Chengyuan Hydraulic are high-performance fluid control components fully compatible with Burkert standards. This valve utilizes a unique pilot-assisted structure where the diaphragm is mechanically linked to the plunger, enabling the valve to open reliably from $0\text{ bar}$ differential pressure. The 6213 range (including codes 00178911, 00205351) is specifically engineered for water, oil, and neutral media, offering excellent vibration resistance and quiet closing. Every unit undergoes 100% seal integrity testing to ensure leak-free operation up to $10\text{ bar}$, guaranteeing 100% original-place interchangeability.

Technical Specifications :

• Core Order Codes: 00178911, 00189592, 00205281, 00205351, 00208422

• Circuit Function: 2/2-way, Normally Closed (NC)

• Orifice Sizes: DN10 to DN40

• Port Connections: G1/4″ to G2″ (Internal Thread)

• Operating Pressure Range: $0\text{–}10\text{ bar}$ (Up to $12\text{ bar}$ for specific variants)

• Media Temperature: $-10\text{°C}$ to $+80\text{°C}$ (seal dependent)

• Seal Material: NBR (Standard) / FKM (High-temp or chemical resistance)

• Electrical Specs: 24V DC, 230V AC (IP65 rated)

• Body Material: Brass or Stainless Steel

Key Technical Advantages:

• Zero-Differential Servo-Assisted Technology: Unlike standard pilot valves, the 6213 features a linked plunger and diaphragm. This allows the valve to initiate flow without any system pressure, making it ideal for gravity-fed tanks or vacuum-relief circuits where reliable opening is critical.

• Anti-Vibration Plunger System: The internal plunger and spring components are crafted from high-grade stainless steel with anti-magnetization treatment. This ensures the valve remains responsive and prevents sticking even under severe mechanical vibration or high-frequency cycles.

• Low-Noise Diaphragm Damping: The diaphragm edges are treated for optimal flexibility, combined with optimized seat geometry to eliminate “water hammer” effects. This is vital for indoor water supply or precision laboratory platforms to minimize system shock.

• Compact High-Efficiency Design: Chengyuan has optimized the thermal management of the solenoid coil, using high-performance thermoplastic encapsulation. This maintains low surface temperatures during continuous duty, allowing for dense installation in small control cabinets.

Application Areas:

• Industrial Cooling: Cooling circuits for machine tools and laser equipment.

• Water Treatment: Automated supply control for cleaning equipment and industrial processing.

• Fluid Dosing & Filling: Neutral media distribution in automated production lines.

Expert Maintenance Tips:

• Flow Direction: Ensure the arrow on the valve body aligns with the actual flow. Reverse pressure will prevent the diaphragm from sealing and can damage the pilot assembly.

• Filtration Protection: While robust, it is recommended to install a filter $\le 500\mu\text{m}$ upstream. Small particles clogging the diaphragm pilot orifice will cause operational failure.

• Signal Verification: During routine maintenance, verify the pilot exhaust “click” sound. A muffled sound may indicate diaphragm aging or debris accumulation in the back-pressure chamber.