Speedaire 4ZL73 Mist Lubricator

Speedaire 4ZL73 Mist Lubricator is a 1/4 in NPT air-line lubricator that introduces a controlled oil mist into the compressed air line to lubricate air-powered tools and equipment. It is specified for up to 60 CFM of flow and a maximum operating pressure of 150 psi, making it suitable for light- to medium-duty shop air systems. The unit features a 1/4 in NPT inlet, a polycarbonate bowl protected by a steel guard, and user-friendly visibility with a sight dome and sight gauge for oil level monitoring. Adjustment is screwdriver‑driven, and certain configurations include an oil drop controller to regulate lubricant delivery. The body is aluminum, and the overall width is about 2 11/16 in, with the product listed in the Intermediate Duty series, designed for compact mounting in pneumatic setups. Maximum operating temperature is rated around 125°F.