Motor Guard AF4510 1/2 NPT Compressed Air Particulate Filter Port Size is 1/2 NPT, Nominal Airflow is 100 CFM, Filtration Rating is 40 Micron, Maximum Pressure is 250 PSI and the Temperature Range is 40-160 F High visibility sight glass and manual drain valve Made in USA Removes moisture and contaminants from compressed air Features all metal construction