Aerodyne Environmental recently released the high-temperature Vacu-Valve dust collector. This trickle-valve system comes with a replaceable silicone duck-bill sleeve that can operate in temperatures of up to 500 degrees Fahrenheit. The Vacu-Valve is available in two designs, the open construction of the Platypus and the closed construction of the Armadillo. The replaceable sleeves are chemical and caustic resistant as well as abrasive resistant. It is available in both carbon steel and stainless steel.
Both the Vacu-Valve Platypus and Armadillo are solutions to rotary valves for particular applications. These trickle-valve systems operate as constant discharge valves for dust collectors, hoppers, cyclones, and other equipment operating under negative pressure. Their duck-bill designs allow for dispensing dry free-flowing material continuously and, unlike rotary valves, have no moving parts to maintain.
The Vacu-Valve requires no lubrication, controls or power supply. Typical industries that utilize Vacu-Valves include foundry, mining, cement, pharmaceutical, dry foods, plastics, chemical and manufacturing.