Vacuum is used with great advantage in conveying dry powder products through dedicated pipe systems. Piab's vacuum conveying systems are built of high quality material. When producing food, pharmaceuticals and chemical products there are demands on the highest possible degree of safety as to hygiene and operation. Piab's piFLOW® conveyors have been developed as an answer to the severe requirements of operational safety and hygiene in the food, pharmaceutical and chemical industries. Piab conveyors are ATEX Dust certified. piFLOW®p and piFLOW®t are ATEX Gas certified. All conveyors are available with either an ejector driven vacuum pump or with a mechanical pump.