ARGO-HYTOS C20 C22 C31 Series Solenoid Valve | C20.6S3-A230K1 C22S3-D24K1 | High Pressure Directional Valve

Chengyuan Hydraulic offers high-performance replacement solutions for ARGO-HYTOS C20, C22, and C31 series solenoid directional valves, engineered to meet stringent European industrial standards. This series is widely utilized in precision machine tools, agricultural machinery, and industrial power units, featuring core models like C20.6S3-A230K1/10 (AC230V) and C22S3-D24K1/11 (DC24V).

As the heart of directional control systems, Chengyuan ensures 100% Drop-in Interchangeability regarding mounting patterns (ISO 4401 compliant), thread ports, and electrical DIN connectors. Supported by our 100% Simulation Load Testing, each valve body is verified for internal leakage at 350 bar and switching frequency, guaranteeing rapid response and extended service life even under high-cycle operation.

Technical Specifications 

• Series Category: C20 (NG04) / C22 (NG06) / C31 (High-Pressure)

• Nominal Sizes: 4mm (C20) / 6mm (C22) / 10mm (C31)

• Max Operating Pressure: 250 bar (Standard) / 350 bar (C31 series)

• Max Flow Rate: 30 L/min (C20) / 60 L/min (C22) / 120 L/min (C31)

• Control Voltages: D24 (24V DC) / A230 (230V AC) / A115 (115V AC)

• Electrical Connection: EN 175301-803 (DIN 43650) Connector

• Spool Symbols: S3 (3-way 4-port, O-function), Z11 (2-way 4-port), and more

• Fluid Media: Anti-wear hydraulic oil (HM) / Phosphate ester (HFD)

• Ambient Temperature: -30°C to +50°C

Key Technical Advantages:

• High-Performance Solenoid Design: Utilizing wet-armature technology, the armature moves in oil for superior cooling and hydraulic damping. Coils support a 100% Continuous Duty Cycle (ED), preventing electrical fatigue during intense operations.

• Precision-Cast Valve Body: Constructed from high-strength ductile iron with CFD-optimized internal galleries. This design significantly minimizes pressure drops ($\Delta P$) and energy consumption.

• Anti-Contamination Spool: The spool is made of hardened alloy steel with high-precision grinding. Unique “scavenging” grooves prevent sticking caused by microscopic particulates, enhancing overall reliability.

• Corrosion Protection: Surfaces are treated with black phosphating or Zinc-Nickel plating, providing excellent salt-spray resistance—ideal for agricultural and construction machinery in harsh outdoor environments.

Application Areas:

• Precision Manufacturing: Workpiece clamping and tool changer control in CNC machines.

• Agricultural Equipment: Auxiliary hydraulic control for tractors and harvester systems.

• Material Handling: Pilot control for multi-way valves in forklifts.

• Mobile Platforms: Directional circuits for mini-excavators and aerial work platforms.

Expert Maintenance Tips:

• Voltage Regulation: Maintain voltage fluctuations within ±10% of the rating. Low voltage results in insufficient force, while high voltage causes overheating.

• Solenoid Air Bleeding: After initial installation and system pressurization, manually press the emergency override button several times to exhaust trapped air, ensuring smooth actuation.

• Manual Override Safety: Never lock the manual override pin while the solenoid is energized, as this can cause the coil to overheat and burn out almost instantly.