Ventiler

Ventiler are devices that regulate the flow of fluids or gases within a system. They achieve this by moving a closure element to open, close, or partially obstruct a passage, thereby controlling flow rate, direction, and pressure. Key components typically include the valve body, a movable closure (such as a disk, ball, gate, or wedge), a seat, and an actuator or manual handle.

Common valve types include ball valves, which use a spherical ball to provide quick on/off control; gate valves, which slide a wedge to isolate flow; globe valves, which regulate flow with a movable disk for throttling; check valves, which allow flow in only one direction; and butterfly valves, which rotate a disc to regulate flow. Safety or relief valves are designed to release excess pressure automatically. Other varieties include diaphragm and needle valves, each suited to specific applications and flow characteristics. Valves can be actuated manually or automatically via electric, pneumatic, or hydraulic systems.

Materials and construction vary with application. Valves are commonly made from stainless steel, carbon steel, bronze, or cast iron, with seals and seats produced from elastomers, reinforced plastics, or hard metals to resist wear and chemical attack. Compatibility with the transported fluid, operating temperature, and pressure ratings are essential considerations.

Applications span many sectors, including water supply and distribution, heating, ventilation and air conditioning (HVAC), oil and gas, chemical processing, power generation, and automotive engines. In internal combustion engines, intake and exhaust valves, driven by a valve train, regulate air and exhaust flow and are critical to performance and efficiency.

Maintenance involves regular inspection for leaks, proper seating, corrosion assessment, and component replacement to ensure reliable operation and safety.