CD21 Series

CD21 Series Mini industrial coupling, renowned as the industry’s go-to profile for its exceptional performance and versatility. Engineered to exceed expectations, these couplings deliver a robust airflow that consistently outperforms conventional options, setting new standards in compressed air efficiency. With Hi Flow technology at its core, the CD21 Series ensures your operations run smoothly and seamlessly, providing the power you need to keep productivity at its peak.

Designed for ultimate convenience, the CD21 Series features Single Handed Operation, allowing for effortless control with just one hand. Whether you’re connecting or disconnecting, you can rely on smooth handling and precise functionality to streamline your workflow. Choose from a comprehensive selection of Male, Female, and Hosetail couplings, as well as a range of Plugs, all crafted with precision and durability to withstand the demands of industrial environments. Experience unmatched reliability and compatibility with the CD21 Series, the trusted choice for pneumatic coupling solutions.

CD21 Series FAQ'S

What types of couplings and plugs do you offer?

We offer a diverse selection of couplings and plugs including:

  • Single Shut Off Couplings: Ideal for basic pneumatic and hydraulic applications, featuring simple and efficient one-way flow control.
  • Double Shut Off Couplings: Designed for more complex systems requiring both inlet and outlet connections for enhanced fluid or air control.
  • Straight Through Couplings: Providing uninterrupted flow with minimal pressure drop, suitable for high-volume applications where efficiency is crucial.


How do I choose between single, double, and straight through couplings?

Your choice depends on the specific requirements of your application:

  • Single Shut Off Couplings: Best for straightforward flow control from one source to one destination.
  • Double Shut Off Couplings: Suitable for applications needing simultaneous connections for input and output.
  • Straight Through Couplings: Ideal for tasks requiring maximum flow efficiency with minimal resistance.
Are your CD21 Series couplings and plugs compatible with different hose sizes and materials?

Yes, our couplings and plugs are available in various sizes to accommodate different hose diameters and thread specifications. They are crafted from durable materials such as brass, steel, and aluminum to ensure compatibility with diverse industrial and commercial setups.



What industries are your CD21 Series couplings and plugs suitable for?

Our couplings and plugs cater to a diverse range of industries, ensuring reliable performance in demanding environments. They are particularly well-suited for:

  • Manufacturing: Facilitating efficient pneumatic and hydraulic systems in production lines.
  • Automotive: Providing robust connections for fluid and air management in vehicle assembly and maintenance.
  • Aerospace: Meeting stringent requirements for reliability and safety in aircraft systems.
  • Agriculture: Supporting equipment for irrigation, crop spraying, and machinery operation.
  • Construction: Enabling efficient operation of pneumatic tools and equipment on job sites.

Additionally, we offer specialist couplings designed for specific applications such as:

  • Breathing Air: Ensuring safe and reliable connections for supplying fresh breathing air in industrial and healthcare settings.

Our products are engineered to meet industry standards and exceed expectations for performance and durability across these sectors.

Do your CD21 Series couplings and plugs ensure safety and reliability?

Yes, our couplings and plugs are designed to guarantee safety, reliability, and efficiency. They undergo thorough testing and quality control processes to provide peace of mind for our customers.

What does coupling interchangeability mean?

Coupling interchangeability means that couplings from different manufacturers or series can connect and operate together seamlessly. Maxsafe Series of couplings are designed to be interchangeable with other recognized global profiles, such as Cejn, Camozzi, KEE, MacDonald, PCL, Rectus, Schrader, Staubli & Tema. Our product descriptions clearly specify which standards and series our couplings interchange with, ensuring compatibility and ease of integration across various industrial applications. This allows for flexible system design, easy replacement, and efficient maintenance, ultimately reducing downtime and operational costs for our customers.