The AR4000-04G is a modular-style pressure regulator engineered for high-flow capacity and consistent performance in demanding industrial environments. It features a balanced valve design that minimizes the "offset" effect, providing a steady supply of air at the exact pressure required for your pneumatic circuit. The unit is constructed with a rugged aluminum alloy body for superior durability and a non-rising, locking adjustment knob that prevents accidental pressure changes once set. This model comes equipped with a high-visibility back-mounted pressure gauge (0-1.0 MPa) and utilizes standardized G 1/2" porting, making it ideal for large-scale production machinery, CNC systems, and heavy-duty air distribution lines.