Parker (TRU-FLATE) P3NRA98BNG Prep-AirĀ® II Regulator is a high-quality air pressure regulator with a 1" NPT port diameter, manufactured in Korea. It has a maximum pressure of 17 BAR and can handle up to 250 cfm airflow. Ideal for use in compressed air treatment applications, this product is designed to regulate air pressure and maintain consistent air flow.