KL-PU Straight Union Quick-Tight Pneumatic Fitting

KL-PU pneumatic fittings are straight union quick-tight connectors designed for fast and reliable tube-to-tube connection in pneumatic systems.

As part of the KL series quick-tight fittings, KL-PU enables rapid installation and secure sealing without complex tools, improving efficiency in industrial applications.

The fitting features a nickel-plated brass body, providing excellent corrosion resistance, durability, and long service life.

Quick connect technology allows tubing to be inserted and locked instantly, ensuring stable and leak-resistant performance in compressed air systems.

OEM and ODM customization services are available for tube sizes, materials, and branding requirements.

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  • Overview
  • Free Sample
  • Warranty policy

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.

how to order Pneumatic Fitting

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

Looking for reliable KL-PU straight union quick-tight pneumatic fittings?
Contact us today for OEM/ODM solutions, bulk pricing, and fast delivery.

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Free Sample Request Process:

  1. Select Your Sample: Browse through our product range and choose the sample you'd like to receive.

  2. Submit Your Request: Fill out the sample request form with your shipping details.

  3. Shipping Cost: While the sample itself is free, the buyer is responsible for covering the shipping fee. Please negotiate the shipping cost with us.

  4. Processing: Once your payment is confirmed, we will process your sample request and ship it to your address.

  5. Receive Your Sample: Your sample will be delivered to you within the estimated shipping time. Enjoy trying our product!

1. The warranty period of this product is eighteen months (subject to thefuselage bar code information). During the warranty period, if the productfails or is damaged under normal use according to the operating manual, ourcompany will be responsible for free maintenance.

2. During the warranty period, if damage is caused due to the followingreasons,a certain maintenance fee will be charged,

  • Machine damage caused by mistakes in use and unauthorized repairsand modifcations;
  • Machine damage caused by fre, food, abnormal voltage, other naturaldisasters and Level 2 disasters;
  • Hardware damage caused by artifcial fall and transportation afterpurchase;
  • Machine damage caused by failure to operate according to the user manual provided by our company;
  • Failure and damage caused by obstacles other than the machine (such asexternal equipment factors).

3. When the product fails or is damaged, please fll in all the contents in the”Product Warranty Card” correctly and in detail.

4. The charge of maintenance fees shall be based on our company’s latestadiusted “Maintenance Price List”.

5. This warranty card will not be reissued under normal circumstances.Please keep this card and show it to the maintenance personnel during thewarranty.

6. If you have any questions during the service process, please contact ouragent or our company in time.The company is committed to upgrading new products. If there are anychanges, you can download them from the company website.