Manual valves are essential components in fluid control systems, operated by hand to regulate, start, or stop the flow of liquids or gases. These valves offer simplicity, durability, and precision, making them ideal for a wide range of industrial applications, including water treatment, oil & gas, chemical processing, and HVAC systems. Common types include gate, globe, ball, and butterfly valves, each suited to specific pressure and flow conditions. Manual operation allows for straightforward installation and maintenance, ensuring cost-effective and reliable performance even in demanding environments.