Pneumatic Resistance Oil Lubricators, also known as air-operated lubrication units, are designed for use in low-pressure centralized lubrication systems where a compact, power-free, and reliable oil supply is required. Operating solely on pneumatic pressure, these lubricators eliminate the need for electrical power, wiring, or electronic control panels. This design provides a simple, dependable lubrication method for equipment requiring continuous or intermittent lubrication.