1. Extremely low head loss: Built-in anti backflow device can achieve emptying at very low driving head, and opening is particularly sensitive, which is particularly important for low-lying areas with limited driving head. In contrast, the head loss of duckbill valves and flap valves is relatively large, while the head loss of cast iron copper inlaid gates is moderate.

2. Blocking direction: The built-in anti backflow device can prevent odor leakage in the sewage system, while still allowing smooth discharge of sewage when needed. It mainly achieves the purpose of preventing backflow through the form of fluid driven check. In contrast, duckbill valves and flap doors are opened and closed through their own elastic action, while cast iron copper inlaid gates adjust their opening degree through the upward and downward movement of the gate plates on both sides of the slide.

3. Maintenance-free: The pipe is designed to be medium-sized and can be easily installed in intercepting pipes, collecting wells, and valve wells without the need to change the structure of these structures. At the same time, due to the lack of easily entangled or corroded mechanical parts, there is no need for manual duty or external power.

Advantages of built-in anti backflow device:

1. The head loss is extremely low, which is particularly important for low-lying areas with limited driving head. It can be emptied at very low driving heads and is particularly sensitive to opening.

2. It can prevent odor leakage in the sewage system while still allowing smooth discharge of sewage when needed.

3. It has become a common solution for commercial and residential areas that must have independent anti backflow protection measures. It is maintenance free, operates automatically, and can provide decades of trouble-free service life, even when the anti backflow device is partially buried.

4. Installed in interceptors and collection wells, it is an ideal product to prevent water from flowing back to sewage treatment plants. Its medium-sized design allows for easy installation in intercepting pipes, collecting wells, and valve wells without the need to change the structure of these structures.

5. It is an ideal choice for municipal departments and commercial facility owners for flood control and daily drainage, as a special synthetic rubber structure is used in the connection between the equipment body and the check sleeve, and there are no mechanical parts that are easily entangled or corroded, so it is maintenance free.