One Way Flow flange integral duckbill check valve

The One Way Flow Flange Integral Duckbill Check Valve is a high-performance backflow prevention device designed for industrial and municipal fluid handling systems. As a core product of RUNXING, this Valve integrates the advantages of Flange connection and Duckbill Valve technology, providing reliable one-way flo control to prevent medium backflow, water hammer, and system contamination.

Also known as Duckbill Non Return Valve and Prevention Drainage Flange Integral Duckbill Check Valve, it features a built-in duckbill structure that opens automatically under fluid pressure and closes tightly when pressure decreases, eliminating the need for additional mechanical components. This innovative design ensures low resistance, high sealing performance, and long service life, making it an ideal choice for global procurement needs.

Our One Way Flow Backflow Prevention Drainage with Flange delivers tangible value to buyers: reducing maintenance costs by 30% compared to traditional check valves, improving system operation efficiency, and ensuring compliance with international fluid control standards.

Product Features & Advantages

Installation Steps

1. Preparation: Check if the valve model, size, and flange standard match the pipeline requirements; inspect the valve surface for damage.
2. Pipeline Alignment: Ensure the pipeline is aligned with the valve flange to avoid forced installation (deviation ≤ 2mm).
3. Flange Connection: Place the valve between the pipeline flanges; insert bolts through flange holes and tighten nuts evenly (torque: 30-50N·m).
4. Direction Confirmation: Verify the valve's flow direction (marked on the Valve Body ) is consistent with the actual fluid flow direction.
5. Leakage Test: Inject test fluid into the pipeline; check for leakage at flange connections and valve body (pressure: 1.25 times rated pressure).
6. Commissioning: Open the pipeline valve gradually to allow fluid to flow; confirm the One Way Flow Backflow with flange operates smoothly without abnormal noise.

Application Scenarios

In these scenarios, our Inline Flanged Series Rubber Duckbill Check Valve effectively prevents backflow of harmful fluids, protects equipment safety, and reduces operational risks—helping buyers improve project reliability and reduce maintenance costs.

Customization Options