The Numatics’ filter, regulator, and lubricator (FRL) accessories include mechanical pressure switches, oil reclassifiers, regulator gauges, FRL brackets, electronic drain valves, inline filters and specialty oxygen concentrator regulators. The Series PS182 is the most rugged Numatics pressure switch. It is easily incorporated into an air system using a 651 or 652 Series diverter block. Its simple electrical connection and knurled knob with tamper resistant hex screw make it the easiest pressure switch to install and adjust on the market.