Heavy Duty 95-125 PSI Air Compressor Pressure Switch Unloader, LF10-4H 4 Port NPT One Quarter Inch Connections, 20A, Standard Action, UL Listed CSA Certified, Built Tough for Reliable Unloading and Easy Install

Heavy Duty LF10-4H 4-Port 95-125 PSI Air Switch

✔️ 4-port 1/4-in NPT connections, UL Listed, CSA Certified, easy install

Heavy duty pressure switch designed for 95-125 PSI operation, ideal for garages, workshops, and industrial air systems. It supports 4-port manifolds and an unloader to ease start-up.

✅ 4-Port 1/4-Inch NPT female connections; unused ports can be plugged
✅ Pressure switch preset at 95-125 PSI with built-in unload valve
✅ On/off metal handle and unloader for quick manual control
✅ UL Listed and CSA Certified for safety and reliability
✅ Works with single-stage or two-stage compressors up to 125 PSI

💡 What is a pressure switch on an air compressor and how does it work?
In simple terms, it acts as the brain of the system, turning the compressor on and off to maintain target pressure and protect the motor from short-cycling.
- It senses system pressure and completes or interrupts the electrical circuit
- The built-in unloader vent mechanism enables a smooth no-load start
- Setpoints around 95 PSI on /125 PSI off control cycling for 4-port setups
- Optional gauge, safety valve, or extra outlets help monitor and control pressure