Air Compressor Pressure Switch 135 To 175 PSI Heavy Duty 1 Quarter Inch NPT With Unloader Valve On Off Lever Single Port Replacement For Air Pumps And Small Compressors Durable Easy To Install Replacement For Air Compressor Systems In Home And Shop Use

135-175 PSI Air Compressor Pressure Switch 1/4 NPT
✔️ 135-175 psi, single-port, 1/4 in NPT, unloader valve, on/off lever

This single-unit replacement pressure switch is designed for air compressors and pumps. It includes an unloader valve and an on/off lever, and fits standard 1/4 in NPT ports. Ideal for home and shop air systems, it helps the unit auto-start and auto-stop at preset pressures.

✅ 135-175 PSI adjustable range
✅ 1/4 in NPT internal port
✅ Unloader valve included for easier startup
✅ On/off lever for simple control
✅ Durable replacement for air compressor systems

💡 What is an air compressor pressure switch used for?

A handy explanation of its role in keeping a compressor cycling safely and efficiently.

• It starts and stops the motor by sensing tank pressure to maintain a chosen range
• Unloader valve vents air at stop to reduce starting current
• Fits standard 1/4 in NPT ports, making it a straightforward replacement
• Helps protect the pump from short cycling and wear