# PKD 5 Way Reducing Push-to-Connect Pneumatic Fitting

Date: 2026-06-19
Categories: Pneumatic Fittings
URL: https://homipneu.com/pkd-5-way-reducing-pneumatic-fitting.html

## Product Summary

PKD pneumatic fittings are 5-way reducing push-to-connect connectors designed for multi-direction air distribution and connection of different tube sizes in pneumatic systems.

With a reducing multi-port structure, PKD fittings allow multiple air lines of different diameters to be connected within a single fitting, making them ideal for complex pneumatic layouts and space-saving installations.

The fitting is constructed using nickel-plated brass and engineering plastic components with an integrated O-ring sealing system, ensuring corrosion resistance, reliable airtight performance, and long service life.

Push-to-connect technology enables quick tube installation and removal without tools, improving efficiency and simplifying pneumatic system assembly.

OEM and ODM customization services are available for tube size combinations, thread types, and materials.

### Specifications

Parameter
Details

Product Type
Pneumatic Fittings

Structure
5 Way Reducing (Multi-Port)

Connection
Tube to Thread

Ports
5 Ports

Function
Reducing + Distribution

Thread Type
BSPP (G) / BSPT / NPT

Material
Nickel-Plated Brass + Engineering Plastic

Seal Type
O-Ring Seal

Operating Fluid
Air, Vacuum

Working Pressure
0 – 1.0 MPa

Proof Pressure
Up to 1.5 MPa

Temperature Range
0 – 60°C

Lock Claw
Stainless Steel

Applicable Tubing
PU / Nylon Tube

PKD fittings are designed as **male reducing multi-branch connectors**, allowing different tube sizes to be connected within one fitting while maintaining stable pressure and sealing performance.

![PKD pneumatic threaded five way reducing push to connect air tube connector](https://homipneu.com/wp-content/uploads/2026/04/20260429220157177166-800x440.webp)

**Model**
**ΦD×4**
**B**
**E**
**ΦP×4**
**A**
**R**
**H**

**[PK](https://homipneu.com/product/pneumatic-fittings/pk-pneumatic-five-way-fitting.html)D4-M5**
4
61.5
17.5
11
3.5
M5
10

**PKD4-01**
4
65
17.5
11
7
R1/8
10

**PKD4-02**
4
66
17.5
11
8
R1/4
14

**PKD6-M5**
6
69
19.5
13
3.5
M5
12

**PKD6-01**
6
72.5
19.5
13
7
R1/8
12

**PKD6-02**
6
73.5
19.5
13
8
R1/4
14

**PKD6-03**
6
74.5
19.5
13
9
R3/8
17

**PKD6-04**
6
76
19.5
13
10
R1/2
21

**PKD8-01**
8
82
22.5
15
7
R1/8
14

**PKD8-02**
8
83
22.5
15
8
R1/4
14

**PKD8-03**
8
84
22.5
15
9
R3/8
17

**PKD8-04**
8
85.5
22.5
15
10
R1/2
21

**PKD10-01**
10
93
24.5
18.5
7
R1/8
17

**PKD10-02**
10
94
24.5
18.5
8
R1/4
17

**PKD10-03**
10
95
24.5
18.5
9
R3/8
17

**PKD10-04**
10
96.5
24.5
18.5
10
R1/2
21

**PKD12-01**
12
105.5
27.5
21
7
R1/8
19

**PKD12-02**
12
106.5
27.5
21
8
R1/4
19

**PKD12-03**
12
107.5
27.5
21
9
R3/8
19

**PKD12-04**
12
109
27.5
21
10
R1/2
21

### Explore Our Brass Series:

### [![PKD pneumatic threaded five way reducing push to connect air tube connector](https://homipneu.com/wp-content/uploads/2026/04/20260429220208374453-400x400.webp)](https://homipneu.com/product/pneumatic-fittings/pkd-pneumatic-threaded-five-way-reducer.html)

### Key Features

- 5-way multi-port structure for air distribution

- Reducing function for different tube sizes

- Tube-to-thread connection

- Compact design for space-saving installation

- Nickel-plated brass for corrosion resistance

- O-ring sealing for leak-proof performance

- Push-to-connect quick installation

### Applications

Pneumatic control systemsUsed for distributing airflow to multiple lines with different tube sizes

Industrial automation systemsSupports complex piping layouts with mixed tube diameters

Air distribution systemsEnables centralized and flexible air routing

Machinery equipmentReduces the number of connectors and simplifies piping

Compact pneumatic installationsIdeal for multi-branch and reducing applications

Widely used in pneumatic systems requiring **multi-direction distribution and tube size conversion**.

### Product Function

PKD fittings distribute compressed air into multiple directions while simultaneously adapting different tube sizes.

Compared to standard 5-way fittings (PKB):

- PKB = same size distribution

- **PKD = reducing + distribution (更高级功能)**

This makes PKD ideal for systems where airflow needs to be split and resized at the same point.

### Product Structure & Size Range

- Models: PKD6-4 / PKD8-6 / PKD10-8 / PKD12-10

- Tube sizes: 4mm → 16mm（reducing combinations）

- Thread sizes: G1/8 → G1/2

- 5-port reducing configuration

- Push-in connection on all ports

### Why Choose Our Pneumatic Fittings

- Professional PKD pneumatic fitting manufacturer

- OEM / ODM customization for reducing fittings

- Reliable multi-port distribution connector

- Durable nickel plated brass construction

- O-ring sealing for stable leak-proof connection

- Fast delivery and global B2B supply capability

### FAQ

**Q1: What is a PKD pneumatic fitting?**It is a 5-way reducing push-to-connect fitting used for distributing air and connecting different tube sizes.

**Q2: What is a reducing pneumatic fitting used for?**It allows connection between tubes of different diameters within a pneumatic system.

**Q3: What is the difference between PKB and PKD fittings?**PKB distributes airflow with same-size ports, while PKD supports reducing (different tube sizes).

**Q4: Does PKD include an O-ring seal?**Yes, it uses an O-ring sealing system for reliable airtight performance.

**Q5: What tubing is compatible with PKD fittings?**It is suitable for PU tubing and nylon tubing.

**Q6: Can PKD fittings be customized?**Yes, OEM and ODM customization is available.

### CTA

Looking for reliable PKD 5-way reducing push-to-connect pneumatic fittings?Contact us today for OEM/ODM solutions, bulk pricing, and fast delivery.