A neck flange incorporates a cast neck that is welded to the pipe. It is designed to transfer stress to the pipe, reducing pressure concentration at the flange base.

The pipe is chamfered to match the flange of the welding neck, forming a “V” and a butt weld is used to connect the two components.

Regarding the benefits of this type of flange, we can highlight:

1 – An important benefit is that the welded connection does not interfere with the flow of liquid through the flange. The flange neck is also chamfered to demonstrate the type of bevel the welder needs to apply to the pipe before connecting it to the flange.

2 – Another benefit is its ability to withstand extreme pressures. It is used in high-pressure locations due to its ability to transfer the pressure present in the neck away from the flange.

3 – The neck flange is used to absorb any type of vibration or movement in the gutter, preventing any type of damage.

4 – Among all non-integral flanges, it is the most resistant type, which allows for the best tightening and which gives rise to the lowest residual stresses due to welding and the temperature difference.