Which manufacturing process is employed to make water taps?

The correct manufacturing process employed to make water taps is shell moulding, which is a type of casting process. In shell moulding, a sand and resin mixture is used to form a shell around a pattern. This process allows for the creation of complex shapes with precise details, making it suitable for components like water taps, which often have intricate designs to accommodate functionality and aesthetics.

Shell moulding provides several advantages, including high dimensional accuracy and excellent surface finish. These qualities are crucial for water taps, which need to ensure proper sealing and a smooth appearance. The thin shell also allows for quick heating, making it easier to produce intricate patterns necessary for modern designs.

While casting involves pouring molten metal into a mold, shell moulding specifically refers to a method that uses a shell-like mold, enhancing precision and reducing defects. The other processes, such as forging and machining, may not deliver the complex shapes or surface finishes required for water taps as efficiently or effectively as shell moulding does.