ONE TOUCH FITTING
How to Select One-Touch Fittings?
Based on Tube O.D., Thread Specification, Connection Type, and Functional Requirements
The selection of one-touch fittings is primarily based on tube O.D., thread specification, connection type, piping layout, and functional requirements, which determine the appropriate product series and fitting shape.
Role of One-Touch Fittings in Pneumatic Systems
One-touch fittings are used to connect pneumatic tubing, equipment ports, and various pneumatic components.
Tubing can be quickly inserted into and released from the tube connection end, supporting equipment piping, piping adjustments, and component replacement.
Classification Criteria for One-Touch Fittings and Related Accessories
One-touch fittings and related accessories are mainly classified based on tube O.D. and thread specification, connection type, and functional and application requirements.
By Tube O.D. and Thread Specification
● Metric tube O.D. (mm)
● Inch tube O.D. (inch)
● G thread (BSPP)
By Connection Type
● Tube-to-tube connection
● Tube-to-thread connection
By Function and Application Requirements
● Limited installation space
● Flow adjustment
● Airflow shutoff, one-way flow, and manual airflow control
● Tube cutting
● Exhaust noise reduction
● Vehicle air brake systems
Common One-Touch Fitting Types
Different one-touch fitting types can be selected according to piping requirements. Some products may incorporate two or more of these features.
● Straight
● Elbow
● Tee
● Y fitting
● Cross
● Manifold
● Swivel
● Bulkhead
● Plug
● Reducer
One-Touch Fitting and Accessory Selection Mapping
The primary selection criteria and typical applications for each product category are shown below.
| Product Category | Primary Selection Criteria | Typical Applications |
|---|---|---|
| Metric One-Touch Fittings | Metric tube O.D. (mm) | Piping using metric O.D. tubing |
| Inch One-Touch Fittings | Inch tube O.D. (inch) | Piping using inch O.D. tubing |
| G-Thread One-Touch Fittings | G thread specification | Connections to threaded ports with G threads |
| Speed Controllers | Flow adjustment requirement | Cylinders or other pneumatic actuators requiring speed adjustment |
| Compact Series | Installation space | Piping in limited installation space |
| Stop Fittings | Automatic airflow shutoff when the tube is released | Piping locations requiring partial maintenance, module replacement, or frequent tube removal |
| Check Valves | One-way flow requirement | Piping requiring airflow direction control or backflow prevention |
| Hand Valves | Manual airflow on/off requirement | Piping requiring manual airflow control |
| Tube Cutters | Tube cutting requirement | Cutting tubing during piping installation or length adjustment |
| Silencers | Exhaust noise reduction requirement | Pneumatic component exhaust ports requiring lower exhaust noise |
| DOT Fittings | Vehicle air brake system application and FMVSS No. 106 requirements | Vehicle air brake systems requiring fittings that meet FMVSS No. 106 requirements |
Metric and inch tube O.D. sizes are not interchangeable. For functional fittings, the tube connection end should be confirmed according to the required tube O.D. and connection type. If the fitting has a threaded end, the thread specification and size should also be confirmed.
One-Touch Fitting Product Categories
The following are the main categories of one-touch fittings and related accessories. Further details on specifications, functions, and suitable applications can be reviewed based on specific selection requirements.
