The heavy-duty pressure regulator is a vital component for a milking machine, designed to precisely control and maintain the vacuum or pressure levels within the milking system. Its primary function is to ensure a consistent and stable vacuum, which is crucial for efficient and gentle milk extraction from livestock. The "heavy duty" designation signifies that this regulator is built with robust materials and construction to withstand the demanding conditions of a farm environment, including dust, moisture, vibrations, and frequent use.