What Is a Quick Connect Fitting?

A quick connector is a connector that can connect or disconnect pipes 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.

Open and close at both ends, open at both ends,
Exchange function: Attachment to pneumatic, hydraulic tools, cylinders, hydraulic cylinders, metal mold related machinery. [1]
1. Save time and effort: When disconnecting and connecting the oil circuit through the quick connector, the action is simple, saving time and labor. [1]
1. Type and temperature of fluid (please select the quick connector of the body material and sealing material that is suitable for the type and temperature of fluid)
Depending on the fluid, suitable body materials and seal materials are different. For example, the quick connector is air. Steel is recommended. Brass or stainless steel is used for water. [2]
According to the different uses mentioned above, there are many types of quick connectors on the market. Here are some examples of common quick connectors [3]

Quick connector air

Air quick connector
Mainly used for quick installation of air pipelines, joint fittings of pneumatic tools. Corresponding to its application, there are various body materials, sizes and mounting shapes. [3]
Notes for use:
Do not use for applications other than fluids. [3]
Do not use for fluids other than the applicable fluid.
Do not exceed the maximum operating pressure during use.
Do not use it outside the operating temperature range to prevent deformation of the sealing material and cause leakage. [3]
Do not hit, bend, stretch, and prevent damage.
Do not use in the place mixed with metal powder or sand, etc. You can use the quick connector here, which can be used under severe working conditions, and ensure long life.
Adhesives can cause malfunction or leaks.
Do not remove the quick connector. [3]

Quick coupling gas

It is mainly used for general-purpose fuse piping. It has the characteristics of large flow, durability and corrosion resistance. The body material, size and installation shape are various. [3]
Notes for use:
caveat
Fluid must flow from the sleeve side to the plug side. [3]
Use a sealing material for male threads for regulated threads.
When installing threads, do not exceed the maximum tightening torque to prevent damage.
Do not use for applications other than quick fluid couplings.
Do not use for fluids other than the applicable fluid. [3]
Do not connect with quick fluid couplings made by other companies.
Do not exceed the maximum operating pressure limit during use.
Do not use outside the operating temperature range to prevent wear or leakage of the sealing material.
Do not hit, bend, stretch, and prevent damage. [3]
Do not use in places where metal powder or sand dust is mixed, to prevent malfunction or leakage.
Adhesives can cause malfunction or leaks.
Do not use in a place where gas is trapped.
Do not load or unload when there is an open flame nearby. [3]
When tempering occurs, replace it with a new one.
When installing the hose, do not get oily to prevent it from causing natural fire.
When reinstalling the hose, the end of the hose is cut from more than 3 cm. [3]
note
Do not use for applications other than quick fluid couplings.
Insert the hose firmly into the root of the interface and secure it with a hose belt or nut. [3]
In order to prevent the occupation of moisture, it should be stored indoors.
Do not use cracked hoses to prevent leaks and detachment.
Leak check should be performed before use. If there is a leak, stop using it immediately and replace it with a new one. [3]
Make sure that the welding torch valve is closed before making connections.
For welding, pay attention to the safety inspection of joints and pipelines after using for a period of time to see if there is air leakage. [3]

Quick joint gas-liquid sharing

Mainly used for piping of ion cooling equipment, brewing equipment, cutting oil piping of working machines, car washing machines Through simple lever operation connection, it can transport liquid, gas, powder and so on. The body material, size and installation shape are various. [3]
Notes for use:
caveat
Do not use for fluids other than the applicable fluid. [3]
Do not exceed the maximum operating pressure during use.
Do not use it outside the temperature range to prevent wear or leakage of the sealing material. [3]
Do not disassemble
note
Use a sealing material for male threads for regulated threads. [3]
During installation, the applied torque should not exceed the maximum torque to prevent damage.
Do not use for applications other than quick connectors.
Do not connect with quick fluid couplings made by other companies.
Do not hit, bend, stretch, and prevent damage. [3]
Do not use in places where metal powder or sand dust is mixed, to prevent malfunction or leakage.
Adhesives can cause malfunction or leaks.
A brake valve must be installed before the quick connector. [3]
Do not use as a hinged joint.
If it is used in a machine with vibration or impact, it will cause a reduction in durability.
Do not use water or glycol series for steel and iron quick connectors. The zinc coating on the surface will dissolve.
The used fluid is clean fluid filtered through a filter. [3]
The "O" seal must always be oily when in use.

Quick coupling oil pressure

main. The material of the main body should be metal that can resist vibration and shock. Various sizes and mounting shapes. [3]
Precautions for use
caveat
Do not use for fluids other than the applicable fluid.
Do not exceed the maximum working pressure limit of the quick-change joint during use. [3]
Do not use it outside the temperature range to prevent wear or leakage of the sealing material.
Do not disassemble when oil pressure passes
Note [3]
The external thread of the control thread shall use a thread-specific sealing material.
During installation, the applied torque should not exceed the maximum torque to prevent damage.
Do not use for applications other than quick connectors. [3]
Do not connect with quick fluid couplings made by other companies.
Do not hit, bend, stretch, and prevent damage.
Do not use in places where metal powder or sand dust is mixed, to prevent malfunction or leakage.
Adhesives can cause malfunction or leaks. [3]
A brake valve must be installed before the quick connector.
Do not use as a hinged joint.
If it is used in a machine with vibration or shock, it will cause the durability to decrease.
Do not use water or glycol series media. Such substances will cause the zinc coating on the surface to dissolve.
The fluid used must be clean fluid filtered through a filter. [3]
The "O" seal must always be oily when in use.
The fluid flow rate should be kept below 8m / s during use. [3]
Refer to the end of this precaution to confirm the fluid seal material and body material. [3]

Quick coupling inert gas

To be used for vacuum pressure piping and compressor pressure test. The sleeve and plug have built-in automatic opening and closing valves suitable for vacuum applications, and can maintain a vacuum of 1.3 × 10Pa in the separated state. [3]
Notes for use:
caveat
Do not exceed the maximum operating pressure limit during use.
Do not use outside the operating temperature range to prevent wear or leakage of the sealing material. [3]
Do not hit, bend, stretch, and prevent damage.
Do not connect or disconnect under pressure or residual pressure. [3]
Do not disassemble.
note
Use a sealing material for male threads for regulated threads.
Do not hit, bend, stretch, and prevent damage. [3]
Do not use for fluids other than the applicable fluid.
Do not use for applications other than quick connectors. [3]
Do not connect with quick fluid couplings from other companies.
Do not use in places where metal powder or sand dust is mixed, to prevent malfunction or leakage. [3]
Adhesives can cause malfunction or leaks.
A brake valve must be installed before the quick connector. [3]
Do not use as a hinged joint.
If it is used in a machine with vibration or impact, it will cause a reduction in durability. [3]

Quick connector cold water temperature oil

Mainly used for universal mold interface. The simplification of mold exchange operation is completely realized, and the rust prevention function is strengthened.
Notes for use:
note
Do not use for fluids other than the applicable fluid. [3]
Do not exceed the maximum operating pressure limit during use.
Do not use outside the operating temperature range to prevent wear or leakage of the sealing material.
Do not hit, bend, stretch, and prevent damage. [3]
Do not use in places where metal powder or sand dust is mixed, to prevent malfunction or leakage.
For threaded installations, do not exceed the maximum tightening torque during installation to prevent damage.
Do not use cracked hoses to prevent them from leaking or falling off. [3]
If it is used in a machine with vibration or impact, it will cause a reduction in durability.
The fluid used must be clean fluid filtered through a filter. [3]
Do not remove the quick connector.

Quick Connector Semiconductor

Mainly used in semiconductor and fluororesin semiconductor production equipment. The main body material should be a corrosion-resistant metal or an injection-molded fluororesin ( PFA ) full resin product. [3]
Notes for use:
note
For the fluid, perform a dissolution test on the sealing material to confirm that the material is suitable.
Use Teflon sealing tape for the outer threads of the control threads. [3]
Do not exceed the maximum tightening torque when installing threads to prevent damage.
To reduce friction (insertion load) and protect the "O" ring when inserting, apply the fluid or pure water to the "O" ring or quick connector ("O" ring fold). [3]
During separation, there is a small amount of fluid flowing out. To prevent danger, compressed air can be used to discharge and separate the fluid inside the quick connector.
Do not use it as a hinge.
Do not use for purposes other than the quick fluid coupling. [3]
Do not hit, bend, stretch, and prevent damage.
Do not apply pressure when using a sleeve or a quick-connect unit alone to prevent the valve from flying out. [3]
The unit must be installed with the specified dust cover.
Do not remove the quick connector. [3]

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