Threaded Line Vac Air Operated Conveyor converts ordinary pipe into a powerful conveying system for various bulk materials. Vac attaches easily to plumbing pipe couplers, making it easy to build a complete system using ordinary pipe and fittings readily available. Vac conveyors eject a small amount of compressed air to produce a vacuum on one end with high output flows on the other. Response is instantaneous. Regulating compressed air pressure provides infinite control of conveying rate. Construction is aluminum and is available in eight sizes from 3/4" to 4" diameter. Exair Corp. Compressed Air Products 11510 Gold Coast Dr. Cincinnati, OH, 45249