One kind of valve used to regulate the flow of fluid or gas in a system is the needle valve. Its plunger, which like a thin, pointed needle and fits into a conical seat, gives rise to the term. The plunger can be adjusted to alter the size of the the opening through which the fluid or gas travels by turning the stem. The flow rate may be controlled efficiently and precisely by employing this setup.
Many industries, including oil and gas, chemical processing, pharmaceuticals, and instrumentation, frequently employ needle valves. They are frequently employed in situations that need for accurate flow control, such as limiting the flow of gases in the laboratory or changing the flow of liquid in process management systems.
The ability to precisely regulate flow rates, their compact size, and its resistance to high pressures are a few needle valves' primary advantages. However, due to the way they are made, needle valves are typically not used for applications requiring high flow rates or frequent both-and-off operations since this could result in excessive wear on the needle and seat.
To meet the demands of diverse working circumstances and a liquid types, needle valves are available in a variety of goods, such as brass, stainless steel, or different metals. A panel-mount layout, a handle or lever for manual operation, or connectors for pressure gauges or other instruments are more features that some needle valves provide.In numerous manufacturing procedures where precise flow control is essential, needle valves are key parts and provide an effective means to regulate the flow of liquid or gases.