Non-Return Valves

Tectra Automation supplies a range of Aventics non-return flow and check valves for handling small applications to screw and bolt, either straight or angled. This range of non-return valves, from D4 to G1/2, is available in pneumatically-operated or manually-operated versions.

NR01 Non-Return Valve

Our valves meet all ISO safety standards and regulations. Also known as check valves, they are used in systems where backflow is not permitted.


NR02 Non-Return Valve

NR02 non-return poppet valves from Aventics, include robust steel valve housings to ensure a long life and corrosion resistance.


QR1 Non-Return Valve

The quick-release non-return valve from Aventics is a lightweight, polymer housing valve and is ideal for small handling applications.

Contact Bosch Rexroth Africa with your non-return valve requirements, today!

Effectively and efficiently prevent backflow with our range of non-return valves


Non-return valves, also known as check valves, are used in pneumatic applications where backflow air is not permitted. Our non-return valve range from Aventics is:

  • ISO compliant
  • Manually or pneumatically operated
  • Screwed or bolted at any angle
  • Ideal for a wide range of applications


Effeciently channel compressed air in one direction with our nickel-plated brass non-retrn valves for corrosion resistance and longevity. Our range of non-return valves feature acrylonitrile butadiene rubber seals, and meet all ISO safety standards and regulations.

The valve housing for this range of non-return valves is configured according to its specific application.

Contact us to identify the best non-return valve for your application.

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Non-return valves that are closer than you think


With over 35 strategically located branches across Africa, Bosch Rexroth Africa's services and products are accessible across the continent, for your convenience, to provide fast support response and service that maximises your uptime.

We’ve established our African presence with over 55 years of excellence, constantly adding to our product portfolio which includes over 30 brands.

Extensive and comprehensive stockholding enables Bosch Rexroth Africa to immediately replace or repair damaged or worn non-return valves, ensuring a shorter turnaround time for repairs – reducing your downtime.

Similar valves


Directional pneumatic valves


Direct or stop, resume or change the direction of pneumatic flow with this range.

We offer pneumatically operated valves, manually operated valves and electrically operated valves.

Flow and check valves


Easily vary and control hydraulic flow with this range.

Other than non-return valves, we offer quick exhaust valves, check choke valves, logic valves and throttle valves.

Frequently asked questions:

What is a non-return valve?
A non-return valve ensures that pneumatic pressure flows in a single direction and fitted to prevent reversed flow, also known as backflow.
What is the difference between a check valve and a non-return valve?
Typically speaking they are the same and are often referred to by both names. To be specific, a non-return valve allows the flow of pressure in one direction where a check valve is modernised, providing the same function and automatically prevents backflow.
Our non-return valves are check valves due to their acrylonitrile butadiene rubber seals that prevent backflow.
Where do you place a non-return valve?
Our Aventics non-return valves can be placed almost anywhere including in tight spaces and at any angle
How do you identify a non-return valve?
A non-return valve should have an “X” sign on the head of the spindle.


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