To select the correct valve material, engineers must consider the media, pressure, flow rate, and intended purpose, while the temperature of the flowing medium and the operating environment are factors that need to be considered for the valve material. Corrosion occurs at higher temperatures. Additionally, temperature causes different materials to expand and contract at different rates, which can lead to leakage issues, excessive binding stress on valve components, or failure.

Components such as valve actuators, valve seats, and valve bodies are typically provided with materials that offer varying ranges of corrosion resistance, temperature tolerance, and wear resistance. Commonly used materials include:

1. Ductile iron: Due to its low cost and availability, ductile iron offers the additional benefit of being able to absorb impacts easily. The downside is that ductile iron has poor corrosion resistance.

2. Brass and bronze: Brass and bronze valves also provide low cost and are readily available. They offer increased corrosion resistance compared to ductile iron.

3. 316 stainless steel: Known for its excellent corrosion resistance, 316 stainless steel valves are more expensive than cast iron, brass, and bronze valves.

4. Monel alloy: Nickel-copper alloy Monel has excellent corrosion resistance. It is commonly used for coating valve trim.

5. Inconel nickel alloy: Chromium-nickel-iron alloy is a nickel, chromium, and iron alloy used for handling corrosive media at higher temperatures.