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This is a die for Heavy Industrial Valve Bonnet.
A Valve bonnet acts as a cover on the valve body. Generally made by casting ( Sand Casting or Investment Casting). It is commonly semi-permanently screwed into the valve body. During manufacture of the valve, the internal parts are put into the body and then the bonnet is attached to hold everything together inside. To access internal parts of a valve, a user would take off the bonnet, usually for maintenance. Many valves do not have bonnets; for example, plug valves usually do not have bonnets.
We also manufacture dies for Heavy Industrial Valve Body.
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