Four Port One Quarter Inch NPT Air Compressor Pressure Switch With Unloader Valve, 95-125 PSI Cutoff, LF10-4H-1-NPT1 Replacement Part For A No-Nonsense, Reliable Air System

Four-Port NPT Air Compressor Switch, Single Unit Unloader
✔️ Single unit, 6.3 mm unloader, 1/4 in NPT, 95-125 PSI

This four-port pressure switch is a replacement part designed for reliable air system control in single- and two-stage compressors. It uses a 1/4 in NPT female connection and offers flexible mounting with a four-port manifold to accommodate gauges, relief valves, and multiple outlets.

✅ QSize and connections: 6.3 mm unloader valve connection; 1/4 in NPT female
✅ Max operating pressure: 125 PSI, with a 95-125 PSI cut-off range
✅ Four-port manifold: flexible mounting in any direction for accessories
✅ Handled control: built-in On/Off lever and side-mounted unloader
✅ Safety: auto-start at 95 PSI and auto-stop at 125 PSI for protection

💡 What is a four-port pressure switch with unloader valve used for in air compressor systems?

This handy piece helps keep air pressure steady and cycling predictable in various setups.

- Handy for controlling on/off cycles in single- or multi-stage compressors with adjustable outlets
- Supports adding gauges, relief valves, and multiple air ports for expansion
- Auto start/stop at preset pressures enhances safety and reduces wear
- Uses standard 1/4 in NPT fittings for broad compatibility