Screw compressors are a type of positive displacement compressor that use two helical screws to compress and move air or gas. These screws mesh together to create a tight seal that traps air between the rotors and compresses it as they rotate. Unlike other types of air compressors, screw compressors operate smoothly and quietly, with no pulsation or surging. They are commonly used in industrial and commercial applications, such as in refrigeration systems, pneumatic tools, and air conditioning units. With their efficiency and reliability, screw compressors are a popular choice for many different industries.