Ductile Iron Fitting, often referred to as DI, is a type of fitting used in piping systems. DI BELL MOUTH is a component designed with a flared opening at one end, resembling the shape of a bell. It is used to facilitate a smooth and gradual transition between different pipe sizes.

Where and How it is Used:

DI Bell Mouths are commonly used in water supply networks, sewage systems, and industrial piping projects where there is a need to connect pipes of different diameters. The bell mouth opening allows for a gradual expansion or reduction in the pipe’s size, reducing flow disruptions and minimizing pressure losses.


1. Smooth Flow Transition: The bell-shaped design of the DI Bell Mouth ensures a smooth and gradual transition between different pipe sizes, reducing turbulence and flow disruptions.

2. Versatility: DI Bell Mouths come in various sizes to accommodate different pipe diameters, providing flexibility in adapting to various piping configurations.

3. Improved Hydraulic Performance: By promoting a smoother flow transition, DI Bell Mouths help improve the overall hydraulic performance of the piping system, enhancing its efficiency.

4. Strength and Durability: Ductile iron provides excellent strength and durability, making DI Bell Mouths reliable and capable of withstanding the stresses and pressures in piping systems.

5. Corrosion Resistance: DI Bell Mouths are resistant to corrosion, ensuring a longer service life and maintaining the integrity of the pipeline.

6.  Leakage Prevention: The sturdy construction of DI Bell Mouths and their secure connections help prevent leaks and enhance the overall reliability of the piping system.

7. Easy Installation: The design of DI Bell Mouths allows for straightforward and secure installation, minimizing installation time and effort.

8. Cost-Effectiveness: Due to their durability and low maintenance requirements, DI Bell Mouths contribute to cost savings over the lifetime of the piping system.

Overall, DI Bell Mouths provide an essential solution for creating smooth transitions between pipes of different sizes in piping systems, ensuring efficient and reliable fluid conveyance. Their benefits in promoting smooth flow, versatility, strength, corrosion resistance, and ease of installation make them a preferred choice for various applications in water supply, sewage systems, and industrial processes.