One of the most important components of a pressure valve is called the valve bonnet that comes in various shapes and sizes. The valve bonnet covers the valve body and is usually connected to it by a welded, bolted, or threaded joint. Although they’re necessary for most valves, they can potentially complicate the valve’s manufacturing process, can become a source for leakage, increase the valve size, and represent a huge chunk of the valve cost. However, when stainless steel castings are used for valve bonnets, you can expect to enjoy the following benefits:
Due to the wide array of stainless-steel grades to choose from, you’ll enjoy the flexibility to configure the cast according to your need. Stainless steel castings for valve bonnets can even take on complex shapes or contain hollow section parts. Since stainless steel castings are made through a repetitive process, multiple valve bonnets can be produced efficiently.
If you use stainless steel castings for valve bonnets, you won’t have to worry about rust or corrosion. For this reason, these become the top choice for most industrial applications that subject these parts in conditions where metal has the tendency to corrode. Other manufacturers also choose cast iron to produce valve bonnets that stay free from corrosion. However, these don’t exhibit the same degree of strength, resistance to high pressure or durability as stainless-steel castings.
Most manufacturers choose to use stainless steel castings for valve bonnets because of their incredible durability and strength. You can expect these types of valve bonnets to function well and remain in excellent condition for a long period of time even when you use them in extreme temperatures.
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