A screw compressor is a type of positive displacement compressor that uses two interlocking helical rotors to compress gas or air. The rotors, also known as screws, rotate in opposite directions, trapping and compressing the gas between them. This compression process is continuous, resulting in a steady flow of compressed gas. Screw compressors are commonly used in industrial and commercial applications, such as refrigeration, air conditioning, and pneumatic tools. They are known for their high efficiency, low maintenance, and quiet operation. The size and capacity of screw compressors can vary, making them suitable for a wide range of applications. They are also available in oil-free versions, making them ideal for use in sensitive environments. Overall, screw compressors are a reliable and versatile option for compressing gas or air in various industries.