Specifications
| Parameter | Details |
|---|---|
| Product Type | Pneumatic Fittings |
| Model | KL-PU |
| Structure | Straight Union |
| Connection | Tube to Tube |
| Installation | Quick-Tight |
| Material | Nickel-Plated Brass |
| Operating Fluid | Air |
| Working Pressure | 0 – 1.0 MPa |
| Temperature Range | 0 – 60°C |
| Applicable Tubing | PU / Nylon Tube |
Straight union pneumatic fittings provide stable connection and efficient air transmission in pneumatic systems.

Model: Model: (Example KL-PU4)
| 4 |
| 6 |
| 8 |
| 10 |
| 12 |
| 14 |
| 16 |
Key Features
Quick-tight installation design
Straight union structure (tube to tube)
Nickel-plated brass for corrosion resistance
Compact and efficient airflow connection
Fast installation without tools
Stable and leak-resistant sealing
Applications
Pneumatic control systems
Used for connecting two air tubes directly
Industrial automation equipment
Ensures stable tube connection in machinery
Air distribution systems
Supports straight airflow transmission
Machinery equipment piping
Ideal for extending pneumatic tubing
Maintenance and replacement scenarios
Allows quick tube extension and repair
Product Function
KL-PU fittings are designed to directly connect two pneumatic tubes, enabling efficient air transmission without changing airflow direction.
Compared to elbow or threaded fittings, KL-PU provides a straight-through connection, minimizing airflow resistance and simplifying system layout.
Product Structure & Size Range
KL-PU4 / KL-PU6 / KL-PU8 / KL-PU10 / KL-PU12
Tube sizes: 4mm → 12mm
Straight union structure
Quick-tight locking mechanism
Compact inline design
Why Choose Our Pneumatic Fittings
Professional KL series pneumatic fitting manufacturer
OEM / ODM customization for quick-tight union fittings
Efficient tube-to-tube connection solution
Reliable nickel plated brass pneumatic connectors
Durable fittings for industrial environments
Fast delivery and global B2B supply support
FAQ
Q1: What is a KL-PU pneumatic fitting?
It is a straight union quick-tight pneumatic fitting used to connect two air tubes directly.
Q2: What is a union pneumatic fitting used for?
It connects two tubes in a straight line for continuous airflow.
Q3: What is the difference between KL-PU and KL-PC?
KL-PU connects tube to tube, while KL-PC connects tube to threaded ports.
Q4: What tubing is compatible with KL-PU fittings?
It is suitable for PU tubing and nylon tubing.
Q5: Can KL-PU fittings be customized?
Yes, OEM and ODM customization is available for sizes and materials.
CTA
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Contact us today for OEM/ODM solutions, bulk pricing, and fast delivery.


