Each Alfa Laval Air Blow Check Valve is designed to evacuate lines of product or CIP solution and for air agitation of product in tanks and other vessels. The disposable air filter media, designed for use with the air blow valve, will filter out the impurities in the air placed under pressure for drying out process tubing after it has been cleaned and rinsed. It also serves as a filter for air used in the air agitation of products in tanks and vessels.