Valve bodies are usually metallic or plastic. Brass, bronze, gunmetal, cast iron, steel, alloy steels and stainless steels are very common. Seawater applications, like desalination plants, often use duplex valves, as well as super duplex valves, due to their corrosion resistant properties, particularly against warm seawater. Alloy 20 valves are typically used in sulphuric acid plants, whilst monel valves are used in hydrofluoric acid (HF Acid) plants. Hastelloy valves are often used in high temperature applications, such as nuclear plants, whilst inconel valves are often used in hydrogen applications. Plastic bodies are used for relatively low pressures and temperatures. PVC, PP, PVDF and glass-reinforced nylon are common plastics used for valve bodies.
valve bodies are usually metallic or plastic brass bronze gunmetal cast iron steel alloy steels and stainless steels are very common seawater applications like desalination plants often use duplex valves as well as super duplex valves due to their corrosion resistant properties particularly against warm seawater alloy 20 valves are typically used in sulphuric acid plants whilst monel valves are used in hydrofluoric acid (hf acid) plants hastelloy valves are often used in high temperature applications such as nuclear plants whilst inconel valves are often used in hydrogen applications plastic bodies are used for relatively low pressures and temperatures pvc pp pvdf and glass-reinforced nylon are common plastics used for valve bodies