: A backflow prevention device is a mechanical device designed to prevent the cross-connection of substances that can pollute or contaminate the water supply during a backflow condition. Getz Fire Equipment experienced backflow testing technicians are some of the best-trained & most-educated in the testing field. Our complete system of backflow testing is designed to protect you, the owner & your facility. Contact us @ 800-747-3473. br Contact us: br Getz Fire Equipment Company br 1615 S.W. Adams br Peoria, IL 61602 br Phone: 800-747-3473 br getzfire.