1STURDY CONSTRUCTION: Made from premium plastic and metal materials, our pressure switch is built to last, ensuring excellent performance and safe, reliable use. 2PRODUCT DESCRIPTION: The pressure switch features a single port connection with a discharge valve and switch lever. With a high safety factor, it offers practicality and adaptability. 31 or 4IN NPT: An alternative to general pressure switches, our air compressor switch is easy to replace if damaged. The four 1 or 4in NPT (female thread) ports can sealing unused connections. 4EASY TO INSTALL: The pressure switch supports simple installation without the need for complex operations. It comes with thread locker compound for easy and convenient installation and use. 5DURABLE AND EFFICIENT: Our pressure switch is designed to withstand frequent use and maintain consistent performance. It ensures accurate control of air compressor pressure, extending the lifespan of the equipment.