Which of the following is a type of bonnet assembly?

A bonnet assembly is a crucial component in valve design, and the welded type is particularly significant due to its structural integrity and suitability for high-pressure applications. The welded bonnet assembly involves joining the bonnet to the valve body through welding, creating a strong, leak-proof seal that can withstand adverse conditions. This design enhances the overall strength of the valve and minimizes the possibility of leaks, making it ideal for critical systems where reliability is essential.

Other types of bonnet assemblies, such as elastomeric, compression, and sealed, may offer different advantages and applications yet do not share the robust characteristics of welded assemblies. For example, elastomeric bonnets often rely on rubber seals that can be more susceptible to degradation over time, while compression bonnets might facilitate easier disassembly but may not provide the same durability under stress. Sealed bonnets can create an excellent barrier against external contaminants, but they may not achieve the same level of structural strength as a welded connection. Thus, the welded bonnet assembly stands out as a reliable choice for demanding environments.