Pressure control devices are tools used to manage and regulate the pressure of gases or liquids within a system. They ensure that pressure levels remain within safe limits, preventing potential hazards such as leaks or explosions. Common types of pressure control devices include pressure regulators, relief valves, and pressure switches. These devices are essential in various industries, including manufacturing, oil and gas, and HVAC systems. By maintaining optimal pressure, they help improve efficiency, protect equipment, and ensure safety in operations. Proper functioning of pressure control devices is crucial for the reliability of many systems.