The Inline Duckbill Check valve is to be fitted inside your pipe to prevent back flow. This is an insertable rubber check valve. The end can be secured in place by either a flange or an internally expanding clamp. Suited to low back pressure applications.

Choosing a Curved Bill or Straight Bill:

Curved Bill model - provides 50% more sealing area compared to the straight bill ended duckbill check valve, enabling a better tighter seal when debris are present. Does require a slightly higher cracking pressure to open the valve compared to the Straight Bill model.

- Straight Bill model - opens with minimal cracking pressure, if debris are present there is a high chance it will effect sealing performance.


Measure the internal diameter of your pipe to select the size. The inline duckbill check valve is sized depending on the internal diameter of the pipe.

Please advise the flange specification when ordering. Standard is AS2129 Table E. If you require no flange and connection to be using an internally expanding clamp, please advise.

- Available in a range of flange specifications - contact us for a quote.

- Available in a range of rubber materials such as Neoprene, NBR, EPDM, Viton - contact us for a quote.

- 12 months warranty on manufacturing defects only.

Brand Inline Duck Bill Check Valve - EPDM
Data Sheet

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