Powder Transfer System (PTS)

Powdered products that are either hazardous or subject to contamination when exposed to the workplace environment can be transferred safely by a self-contained Powder Transfer System (PTS). Designed for such products as pharmaceuticals, fine chemicals and metal powders, the totally sealed pneumatic system requires no external filters or vents, allowing dust-free charging of powder directly into closed vessels, including those under vacuum or pressure. The system transfers materials at velocities up to 5 m/sec, and can reportedly move non-free-flowing powders, including some wet cake, and handle flammable and explosive products safely. The system employs a sealed transfer vessel that is connected to the feed container and mounted on the vessel to be charged. Product is moved into the transfer vessel and then charged into the receiving vessel with no escape of dust or air into the environment. The PTS is equipped with four valves, one each for product inlet, product outlet, vacuum source and pressure source. The inlet valve is connected via sealed tube to the product source, and the outlet valve is similarly connected to the receiving vessel. Inside the PTS cover is a membrane that can filter particles down to 1 µm.