A piston valve is a type of valve that regulates the flow of liquids or gases by moving a piston inside a cylinder to either block or allow flow. These valves are known for their tight, leak-free sealing and are often used when precise flow control is needed. You’ll commonly find them in engines, cooling systems, and various industrial applications. Their reliable performance makes them ideal for high-pressure environments. In addition, piston valves are durable and require minimal maintenance, which helps reduce downtime and operating costs.