Parker 05E22A13AB One-Unit Combo Compressed Air Filter/Regulator, 3/8" NPT, Polycarbonate Bowl with Metal Bowl Guard, Manual Drain, 40 Micron, 40 scfm, Relieving Type, 2-125 psi Pressure Range, No Gauge Parker 05E series compressed air filter/regulator for water and particulate removal, and air pressure control Single-unit, integral, "piggyback" filter/regulator for space-saving installations Relieving-style regulator exhausts excess pressure for increased performance and safe operation Removable, non-rising knob for tamper resistance Male National Pipe Taper (NPT) threads for connecting to female threaded pipes