What is a quick connector

A quick connector is a connector that can be connected or disconnected without tools. Quick connectors can be divided into: quick connectors for air, quick connectors for oxygen fuel gas, quick connectors for gas and liquid, quick connectors for oil pressure, quick connectors for inert gas, quick connectors for cooling water and oil, and semiconductor quick connectors.

Structural classification of quick connectors

Open and close at both ends

When not linked: When the ferrule of the mother 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 mother body and the daughter body, and the valves of the daughter body and the mother body are respectively closed , instantaneously block fluid flow 

When linking: when the daughter body is inserted into the parent body, the ferrule returns to its original position under the action of the spring, the steel ball rolls and locks the daughter body tightly, and at the same time the valves of the mother body and the daughter body push each other to open, fluid flow, O-ring Can completely block the leakage of fluid 

open at both ends

Unlinked: When the ferrule of the mother body is pushed to the other end, the steel ball rolls outward automatically, so the daughter body is moved out; since the daughter body and the mother body have no valves, the fluid flows out. 

When linking: when the daughter body is inserted into the mother body, the ferrule is pushed to the previous position by the force of its spring, so that the steel ball locks, the fluid flows, and the O-ring in it prevents liquid leakage 

single switch

No link: When the ferrule of the mother 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 be automatically closed to block the fluid flow. 

When linking: When the daughter body is inserted into the side of the mother body with the ferrule, the valve is opened to allow fluid flow, the gasket is pushed back to its original position by the force of the spring, the stainless steel ball will lock to ensure the daughter/mother body connection, the gasket inside can Completely block fluid leakage. 

The function of the quick connector

Exchange function: air pressure, hydraulic tools, air cylinders, hydraulic cylinders, accessories for metal mold related machinery. 

Maintenance function: computer cooling device, oil cylinder maintenance of die-casting machine.

Test function: test of vacuum, pressure resistance, leakage, operation, etc. 

Conveying function: conveying, handling and conducting functions of solids such as bolts and nuts.

Filling function: inert gas, nitrogen, PG, carbonic acid.

Connection functions: Fixing parts for fishing rods and compact CDs, connections for mobile operations, and other purposes than fluid delivery. 

features

Features of quick connectors

1. Time-saving and labor-saving: When disconnecting and connecting the oil circuit through the quick connector, the action is simple, saving time and manpower. 

2. Fuel saving: When the oil circuit is broken, the one-way valve on the quick connector can close the oil circuit, and the oil will not flow out, avoiding the loss of oil and oil pressure.

3. Environmental protection: When the quick joint is broken and connected, the oil will not leak, which protects the environment. 

4. The equipment is divided into parts for convenient transportation: large-scale equipment or hydraulic tools that need to be carried easily, use quick connectors to disassemble and transport, and then assemble and use after arriving at the destination.

5. Economy: All the above advantages have created economic value for customers. 

Selection criteria for quick connectors

1. The type and temperature of the fluid (please select the body material and the quick connector of the sealing material suitable for the type and temperature of the fluid)

Appropriate body materials and seal materials vary depending on the fluid. For example, the quick connector is air. It is recommended to make steel, and if it is water, choose brass or stainless steel. 

2. The pressure of the liquid (please select a quick connector suitable for the pressure resistance of the fluid pressure)

The pressure of the fluid is also the key to the selection of quick connectors. The quick connectors for oil pressure are serialized between 5.0Mpa (51kgf/cm&²) and 68.6Mpa (700kgf/cm&²), and the structure of the quick connectors is also different according to the pressure resistance characteristics. 

3. The structure of the automatic switch valve (please select a quick connector with a valve structure suitable for piping purposes)

For the structure of the valve, there are two-way switch type, one-way switch type and two-way open type. Because when separating, except for the two-way switch type, fluid flows out of the piping. So please pay attention. 

4. The use environment of the quick connector (please select the quick connector with the structure and material suitable for the use environment)

Consider the type, body material, and sealing material of the quick connector selected in combination with the humidity conditions of the use environment, dust conditions, and the use environment that is prone to corrosion. 

5. Confirm that the selected quick connector connection thread should be consistent

In the process of using different brands of products, it is best to use the female and male plugs of the same brand together. If cross-use is necessary, it is best to consult the technical personnel of the product supplier before use, and then use it after confirmation. 

6. The shape and size of the installation

Please determine the type and material of the quick connector, and specify the assembly shape and size corresponding to the piping characteristics. Note that dimensions are relative to fluid flow.

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