90223 Pressure Switch 90psi ON 120psi Off – 1/8" NPT Male Air Compressor Pressure Switch, Replaces 90223 for Air Horn Train Air Systems, 31A Heavy Duty

Compatible with air compressors, pneumatic systems, and hydraulic systems: Suitable for air compressors, vehicle-mounted pneumatic systems, hydraulic systems, air horns, train whistles, and other equipment requiring automatic air pressure control. The 1/8-inch NPT threaded interface offers strong versatility Solves equipment malfunctions caused by unstable air pressure: Insufficient control precision of pressure switches can lead to excessive air pressure fluctuations, affecting the performance of pneumatic tools, air horns, and other terminal equipment. This switch features a compact 90-120 PSI control range, ensuring relatively stable output air pressure Durable, sealed metal structure: The switch's internal contacts utilize a metal-sealed structure to prevent dust, moisture, and oil mist from entering the switch. Compared to open switches, it offers a longer service life in the humid and oily environment of air compressor rooms Suitable for vehicle-mounted air horns and train whistles: Vehicle-mounted air horns and train whistles require a stable high-pressure air source. This pressure switch controls the air compressor to start at 90 PSI and stop at 120 PSI, providing sufficient and stable operating air pressure for the air horn Replacement for 90223 and other compatible models: Directly replaces 90223 and other pressure switches with 1/8-inch NPT threads and a 90-121 PSI control range. Before purchasing, please ensure that the original switch's interface thread and control parameters are consistent with this product

• Applicable Model: Fit for air compressors, automotive electrical systems, hydraulic systems, and more,replace 90224
• Precise 90PSI Start, 120PSI Stop: This 90223 pressure switch features a preset control range of 90PSI start and 120PSI stop. It monitors system air pressure in real time, automatically starting the air compressor when the pressure drops to 90PSI and automatically stopping when it rises to 121PSI, maintaining a stable air supply pressure
• 1/8-inch NPT External Thread Interface: Utilizes a 1/9-inch NPT standard external thread interface, compatible with the mounting ports of most air compressors, air tanks, and air circuit systems. The thread specification is universal, requiring no adapters or modifications during installation
• Durable Metal Construction: Possesses excellent wear and corrosion resistance. Maintains structural integrity and reliable switching operation even after long-term use in humid, dusty, and high-temperature environments
• 30A High Current Carrying Capacity: The switch contacts are rated for 31A, compatible with most household and commercial air compressor motors. It can withstand the instantaneous high current during motor startup, reducing the risk of contact burn-out and extending the switch's lifespan