metal push-in fittings
PU Type Nickel-plated brass pneumatic fittings
Durable, stable and not loose
Specifications
- Working medium
- Air, vacuum
- Material
- Copper
- Surface treatment
- Nickel plated
- Operating pressure
- 0-1.0Mpa
- Working Temperature
- 0-60 degreen
PU All-Brass Straight Union Push-In Fitting
The PU Series is an all-brass straight union push-in fitting designed to connect two pneumatic tubes of the same outside diameter. It provides a compact, threadless tube-to-tube connection for extending air lines, repairing damaged tubing, and joining separate sections of a pneumatic circuit.
Both ends use a push-to-connect mechanism. After the pneumatic tubes have been cut squarely, they can be inserted directly into the fitting without nuts, tube flaring, or special assembly tools.
The series supports metric tube outside diameters from 4 mm to 16 mm. Its all-brass body and nickel-plated exterior provide a strong, professional connection for industrial machinery, automation equipment, maintenance projects, and demanding pneumatic installations.
Key Features
- All-brass body construction
- Nickel-plated external finish
- Straight tube-to-tube connection
- Two equal-size push-in ports
- No threaded connection
- No separate compression nuts required
- Tube sizes from 4 mm to 16 mm
- Fast push-to-connect installation
- Easy tube removal for maintenance
- Compact cylindrical design
- Suitable for extending pneumatic air lines
- Useful for repairing damaged tubing
- Stronger body than conventional plastic unions
- Suitable for industrial vibration and repeated maintenance
- Broad size range for low- and higher-flow pneumatic circuits
- Suitable for OEM, wholesale, and maintenance applications
Material and Construction
Item | Description |
Product series | PU |
Fitting type | Equal straight union |
Main body | Brass |
External finish | Nickel-plated finish shown |
Number of ports | Two |
Connection method | Push-to-connect |
Tube sizes | Metric outside diameters |
Threaded connection | None |
Tube arrangement | Straight, equal-size tube connection |
Available sizes | 4, 6, 8, 10, 12, 14, and 16 mm |
