Ductile iron pipe fittings come in various types and classifications based on their design and mechanical properties. Some common types of ductile iron pipe fittings include:
1. Flanged ductile iron fittings: These fittings have a flange on one or both ends, which allows them to be bolted to other pipes or fittings with matching flanges.
2. Mechanical joint ductile iron fittings: These fittings have a mechanical joint that allows them to be assembled and disassembled without welding, making them easy to install and maintain.
3. Push-on ductile iron fittings: These fittings have a rubber gasket that is compressed between the fitting and the pipe, providing a tight seal without the need for bolts or welding.
4. Restrained ductile iron fittings: These fittings have a restrained joint that prevents the pipes from separating due to external forces such as soil movement or water pressure.
5. Grooved ductile iron fittings: These fittings have a groove on the end that allows them to be connected to other pipes or fittings with a matching groove using a coupler or clamp.
6. Tapping ductile iron fittings: These fittings have a branch that allows a new pipeline to be connected to an existing one through a tapping process.
Overall, the type of ductile iron pipe fitting chosen depends on the specific application, the size and type of pipe being used, and the required level of mechanical strength and durability.
