Watts FluidAir R119-02C Pneumatic Air Regulator

The Watts FluidAir R119-02C Pneumatic Pressure Regulator is a 1/4 in. NPT, relieving regulator that provides precise downstream pressure control for compressed air systems. It offers an adjustable outlet range from 0 to 125 PSI (2–125 PSIG nominal) with a 300 PSI maximum inlet and up to 100 SCFM flow. The unit features a zinc body, aluminum spring cage, and brass bottom plug, with two 1/4 in. NPT gauge ports and a T-handle adjustment style for inline installation in industrial air lines. Designed for compressed air, it supports temperatures from 40°F to 120°F (4°C to 49°C) and is commonly used in manufacturing facilities, assembly lines, pneumatic automation equipment, air-operated tools, OEM machinery, and process control panels to stabilize downstream pressure and protect downstream cylinders, valves, and actuators. Common replacements include Watts FluidAir R119-03C and R119-04C.