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The information presented in this bulletin is intended as a guide to the chemical resistance of materials used in the manufacture of Ham-Let Valves.
Many factors which influence corrosion rating, such as temperature fluctuations, concentration and aeration of fluids, high velocity or abrasions in the fluid stream, have been taken into account. The physical properties of a material are affected differently by each corrosive media and it is sometimes necessary to sacrifice valves with one property to gain a maximum resistant valve with another property.
An “A” rating is associated with internal moving parts, in direct contact with the media. in some cases a “B” rating can be given to body material in direct contact with media if the corrosion rate is not such as to cause any serious problem.
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