What are the classifications of pneumatic quick connectors
According to the structure, it can be divided into:
1. Open and closed at both ends:
When not connected - when the collar of the parent body moves to the other end, the stainless steel ball automatically rolls outward, and the daughter body is disconnected due to the joint valve spring force of the parent body and the daughter body. The valves of the daughter body and the parent body each close, instantly blocking fluid flow.
When connecting - when the sub body is inserted into the mother body, the collar returns to its original position under the action of the spring, and the steel ball rolls to lock the sub body tightly connected. At the same time, the valves of the mother body and the sub body push each other open, allowing fluid flow. The O-ring can completely block fluid leakage.

2. Open ended design at both ends
Not linked - When the collar of the parent body is pushed to the other end, the steel ball automatically rolls outward, so the daughter body is removed; Due to the absence of valves in both the daughter and mother bodies, fluid flows outward.
Link - When the daughter is inserted into the mother body, the collar is pushed to its previous position by the force of its spring, causing the steel ball to lock and fluid to flow. The O-ring in it prevents liquid leakage
3. Single channel open closed type
When not connected - when the collar of the parent body moves to the other end, the stainless steel ball automatically rolls outward, and the daughter body is bounced open by the reaction force of the valve spring, and the valve can automatically close to block fluid flow.
When connecting - when the sub body is inserted into the side of the mother body with a collar, the valve is opened, causing fluid flow. The gasket is pushed back to its original position by the force of the spring, and the stainless steel ball locks to ensure the sub/mother body connection. The gasket inside can completely block fluid leakage.