- There are two types of stainless steel butterfly valve categorized by how they are operated: Lever and Gear
- There are two types of ductile iron butterfly valve categorized by how they are operated: Lever and Gear
- There are two types of aluminum butterfly valve categorized by how they are operated: Lever and Gear
- There are two categories of stainless steel Y strainer depends on the end connection. The two categories are flanged and threaded.
- There are two categories of stainless steel ball valve : Flanged and Threaded
- There are two categories of stainless steel check valve : Flanged and Threaded
- There are two categories of stainless steel globe valve: Flanged and Threaded
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Two types of stainless steel gate valve are flanged and threaded
- There are two categories of cast iron ball valve: Flanged and Threaded
- There are two types of cast iron check valve : Flanged and Wafer
- The only type of cast iron Y strainer available is flanged
- The only type of cast iron gate valves available is flanged.