As industries such as water and hydropower move to bigger valves, there is a growing need for valve components with larger dimensions. Manufacturing large valve components isn’t easy, and only a few companies are capable of tackling the challenge. The VMA and its member companies are well positioned to answer questions about the unique challenges associated with large valves.
Two-piece ball valves
Two-piece ball valves are a flexible choice for applications in the plumbing industry, and they provide a strong seal and reduced leakage. They are available with either flanged or threaded end connections. They are also extremely versatile and can be used in a variety of process systems. They have a simple structure and are easy to maintain. This means that maintenance is not an issue and there is little risk of sealant erosion.
Two-piece ball valves are available in different sizes, from millimeter-sized to several meters-long. They can be used in high-pressure and vacuum applications. Regardless of their size, they should feature spheres on the inlet and outlet to provide a good seal.
Three-piece flex-wedge valves
Flex-wedge valves are the most popular type of gate valve. These valves can adjust to varying flows, temperatures, and piping stresses. The flexible design of these valves makes them easy to manufacture. Additionally, the disc’s flexibility compensates for imperfections on the seating surface.
These valves are available in a variety of configurations, including one-piece, two-piece, and multi-port. These valves are ideal for mixing and multi-directional diverting. They can eliminate the next page need for additional valves and piping. Manufacturers typically provide a port chart for customers to determine the right configuration.
Three-piece flanged end connection
This PP Three-piece flanged end connection ball valve is a versatile valve that is ideal for controlling the flow of liquefied or gaseous materials in pipeline applications. It is constructed with premium grade polypropylene and is certified to international quality standards. It can be easily disassembled for cleaning and maintenance.
It is available in metric and imperial sizes. It is suitable for welding and features an encapsulated, recessed end cap. This enables the seat to be perfectly aligned with the ball, even during field repairs. It is also possible to weld the end cap in-place, without the need to remove the valve from its line.
Three-piece solid wedge valve
The solid wedge gate valve is one of the most common types of gate valves. Its design allows it to be installed anywhere and is suitable for almost any fluid. Wedge valves are often used in waterworks, sewage fields, and oil and gas industries. They are also commonly used in steam systems. Another type of gate valve is the flexible wedge gate valve. This type is usually installed using a union bonnet instead of a screwed bonnet.
The solid wedge gate valve has a disk and seat rings that are either threaded in or pressed in. They are the most common type of gate valve and are suitable for virtually any type of fluid. This type of valve is especially practical when turbulence is a problem.