80pcs straight-through quick plug plastic box set 60pcs 4/6/8/10/12pu pneumatic connector set box cross-border

Conclusion First

1. Pneumatic quick couplings are a type of sealing connection device that can quickly connect or disconnect air pipelines without the need for tools. The core value of these couplings lies in enhancing the efficiency of production line changeover, reducing the risk of leaks, and adapting to high-frequency disassembly and assembly scenarios.1。

2. Pneumatic quick connectors are widely used in high-demand fields such as pneumatic systems, automation equipment, robots, automotive manufacturing, and medical instruments, which require high response speed and reliability.3The original intention of its design is to replace traditional threaded connections, addressing issues such as time-consuming manual tightening, unstable sealing, and ease of wear during repeated operations.1。

3. According to the flow-on/off mechanism and valve control methods, the main structures are divided into three categories:

• Two-end open-and-close typeWhen the son body is inserted into the mother body, the ring spring resets → the steel ball locks tightly → the O-ring seals; when pulled out, it automatically closes, providing the best leak-proof effect.1。
• Two-end openNo built-in valves, fluid leakage throughout the process of insertion and removal, only suitable for non-critical or test conditions.1。
• Single-path open-close typeOnly valves are set on the mother side, the trigger is activated when the sub-unit is inserted, and the spring pushes the gasket back after being removed to achieve unidirectional closure, balancing cost and basic sealing.1。