Cixi Poolke Hydraulic Pneumatic Co., Ltd. is one of the leading manufacturers and suppliers of 21 anti misconnection quick couplings in China. We are committed to providing high quality customized service to global clients. Please feel free to wholesale the newest 21 anti misconnection quick couplings from our factory.
Anti-Mis-Insertion Pneumatic Quick Couplings – 21 Series
The 21 Anti Misconnection quick couplings from the POOLKE 21 Series are designed for pneumatic systems that require clear line identification and reliable prevention of incorrect connections. Using color-coded anodized aluminium identification rings and matching plug codification, this series helps distinguish different media circuits and reduces the risk of connecting the wrong coupling and plug.
Only couplings and plugs with the same color coding can be connected, providing an additional level of operational safety when several media lines are installed close together. The 21 Series also features a compact mini design and convenient one-hand operation for fast connection and disconnection. With a nominal flow diameter of 5 mm and flow capacity up to 530 L/min, the 21 Anti Misconnection quick couplings combine practical airflow performance with connection control, making them suitable for automated equipment, laboratory systems and industrial installations where different gases or pneumatic circuits must remain clearly separated.
Key Features
Anti-Mis-Insertion Safety Design
Special plug codification ensures that only matching coupling and plug combinations can be connected, helping prevent incorrect line connections.
Color-Coded Circuit Identification
Available in green, brown, blue and red versions for clear visual identification of different media or pneumatic circuits.
Compact Mini Size
The small coupling body saves installation space and is suitable for equipment with closely arranged pneumatic connections.
One-Hand Operation
The quick-connect mechanism allows convenient one-hand connection and disconnection for efficient daily operation.
Nickel-Plated Brass Construction
Both socket and plug are manufactured from nickel-plated brass for durability and corrosion resistance in industrial environments.
Multiple Connection Options
Available with male thread, female thread and hose connection configurations to meet different installation requirements.
Applications
The 21 Anti Misconnection quick couplings are suitable for:
- Multi-media pneumatic systems
- Laboratory and testing equipment
- Medical and analytical equipment
- Factory automation
- Color-coded compressed-air circuits
- Industrial equipment requiring connection error prevention
Technical Overview
| Series | 21 Anti-Mis-Insertion | Socket Material | Nickel-Plated Brass |
| Type | Anti-Mis-Insertion Pneumatic Quick Couplings | Plug Material | Nickel-Plated Brass |
| Nominal Flow Diameter | 5 mm | Operation | One-Hand Operated |
| Flow Capacity | 530 L/min | Identification Colors | Green / Brown / Blue / Red |
| Max. Working Pressure | 35 Bar | Temperature Range | -20°C to +80°C |
Interchangeability
Cross-reference examples include:
Rectus 21 Series Type
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