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The valve's body

- Apr 11, 2018 -

The valve's body is the outer casing of most of all the valve that contains the internal parts of trim.The bonnet is the part of the encasing through which the stem passes and that forms a guide and seal for thr stem.The bonnet typically screws into or is bolted to the valve body.

Valve bodies are usually metallic or plastic .Brass ,bronze ,gunmetal, cast iron,steel,alloy steels and stainless steels are very common .Sweater applications ,like desalination plants ,often use duplex valves ,as well as super duplex valves ,due to their corrosion resistant properties ,particularly against warm sweater .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 .

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