Stainless Steel Instrumentation Ball Valves
The ball used in this type of valve has a hole through which the fluid flows, and when the valve is closed, this hole is aligned with the pipe allowing flow to continue. When the valve is open, however, the sphere turns so that the opening is no longer aligned with the pipe. This allows for an effective method of regulating flow.
There are key elements to keep in mind when choosing a valve for an instrumentation application. During the design of any system, there are many variables to be considered. For example, it is vital that all components of the system be evaluated for appropriate design, and that factors such as fluctuation in pressure, temperature, and flow medium be considered.
Applications of Stainless Steel Instrumentation Ball Valves
The overall layout of an application will determine the most appropriate valve type to use. Other considerations include codes and standards, actuator design possibilities, flow analysis, and orifice sizing.
Factors:
Packaging: The packing and design of the Stainless Steel 304 Instrumentation Ball Valves are important to consider during the specification process. The system is comprised of a variety of different valve types, as well as different types of packing. The control portion is comprised of a ball or needle and is operated via a manual device, or an automated device, depending on the desired function. Material flow is regulated using the instrumentation valve seat, while leakage is prevented by packing between the valve stem and the seat. Factors such as construction equipment, valve stem stiffness, and position on the valve stem, along with the optimal valve selection, can have a significant impact on overall performance.
Pressure Fluctuation: The most common stainless steel 304 instrumentation ball valves are those that have perfluoroalkoxy polymer seats and can handle temperatures up to 350°F (176°C) and pressures up to 3,000 PSI. High-quality ball valves feature seats that have been tested at 1,000 PSI with nitrogen at 0% leakage using pneumatic testing. High-quality ball valves are available in single (inline), two-way, and three-way patterns. 3,000 PSI hydrostatic pressure and 2,000 PSI hydrostatic pressure are appropriate for testing the bodies of these valves.
Flow Medium: The carbide precipitation resistance of stainless steel 304 instrumentation ball valves is high. These valves can be easily heated in high-temperature ranges in an application. Therefore, they are well suited for transporting high-temperature fluids, and they possess excellent welding properties. Hot shaping is easy, but you must maintain a very high temperature.