Plug valves, also known as cocks, are the most popular type of valves, dating back over 2,000 years. The valves are crucial in regulating the flow of fluids, including liquids, gases, and fluidized solids. Plug valves are simple, economical, and reliable for all your needs in plumbing, irrigation, and industrial processes.
Below is a clear description to help you select the best plug valve for your needs.
Consider the Type
Plug valves come in different types, including eccentric plug valves, lubricating plug valves, non-lubricating plug valves, and expanding plug valves. A lubricating plug valve is best if you want a plug valve that performs well in processes that transport fluids with mildly abrasive particles.
Additionally, if you’re looking for a valve that can mechanically expand, an expanding plug valve works well in preventing product contamination. You will find a plug valve for gas and liquid fuel control, high-pressure temperature flow, low-pressure services, and directional flow control.
Select the Right Material
Plug valves are made of different materials, such as plastic, bronze, brass, steel, and stainless steel. You need to consider the valve body material, which covers the housing and is primarily made of stainless steel. In addition, you will consider the plug material, which is where the flow control plug is situated.
Determine the Connection
Plug valves can connect to various systems, depending on the pressure and temperature of the fluid. The common connections include socket weld, threaded connections, bolt flange, butt weld, and metal face seal. Each connection plays a significant role in fluid control.
For example, socket welds work well for steel valves, whereas threaded connections are perfect for systems that require quick installation and dismantling.
Abide by the Standards
Plug valves adhere to specific industry standards that ensure successful outcomes and production safety. There are standards to oversee the design, materials, dimensions, test requirements, and pressure to temperature ratings. It is crucial to ensure your preferred plug valve adheres to the industry standards for its category.
Overall, the best plug valve meets all mandatory industry specifications and standards and aligns with industrial applications. Conduct research and seek professional input before installing a specific plug valve.
