Which of the following materials can valves be made from?

Valves can be constructed from a variety of materials to suit different applications, and all the mentioned materials are commonly used for valve manufacturing due to their unique properties.

Bronze is favored for valves that require resistance to corrosion and wear, often used in marine environments or where chemical interaction is a concern. Its ability to withstand high pressure and temperature makes it suitable for various industrial applications.

Cast iron is another popular choice due to its strength and durability, often used in larger valves for water and sewage systems. It is an economical choice and provides excellent wear resistance, making it ideal for applications where high flow rates are involved.

Stainless steel is renowned for its resistance to corrosion and is used extensively in food processing, pharmaceutical, and chemical industries. Its high strength-to-weight ratio and hygienic properties enhance its suitability for applications where cleanliness and durability are crucial.

Since each of these materials has specific advantages, they are all valid for making valves, which is why the answer encompasses all of them.