Why is shell moulding preferred for manufacturing water taps?

Choosing shell moulding for manufacturing water taps is primarily due to its ability to produce high-precision and durable components. Shell moulding involves using a sand-resin mixture, which creates a thin shell that results in a high-quality cast with excellent surface finish. The precision offered by this process is critical for water taps, as it ensures that they fit properly and function effectively without leaks.

Additionally, the durability of the resulting products is an essential factor in the tap's longevity and performance under varying pressure conditions and exposure to water, which can include corrosive elements. High durability reduces the need for frequent replacements and repairs, leading to better long-term value for both manufacturers and consumers.

While aspects like production costs, setup times, and material toxicity are important in manufacturing processes, they do not primarily drive the preference for shell moulding in the context of producing water taps. The primary concern here is to ensure that the final product meets stringent performance and quality standards, making high precision and durability the deciding factor.