The Black Diamond Unloader Valve is a genuine replacement component engineered to restore proper compressor operation and reliable startups. Designed to activate when the pressure switch shuts the motor off, this valve safely releases built up air pressure, allowing the motor to restart smoothly when the compressor cycles back on. Rated for 125–155 PSI, this complete valve assembly is ideal for replacing a worn or damaged unloader valve. Built for durability and long service life, it is designed for quick, straightforward installation using standard tools, making it an excellent choice for routine maintenance and repairs.