The Exair Aluminum Threaded Line Vac Air Operated Conveyors are designed to convert ordinary pipe into a conveying system for parts, scrap, trim and other bulk materials. These conveyors, available in 2-1/2 NPT and 3 NPT, can convey bigger parts and large volumes of material over long distances, according to the company. The threaded line vac is designed to attach to standard plumbing pipe couplers. The Aluminum Threaded Line Vacs are CE compliant and meet OSHA pressure requirements.