Union Process has developed a special discharge valve for use with its cryogenic grinding HD-01 Laboratory Attritor.    “There are numerous advantages to this new grinding tank and discharge valve design,” Emery Li, director of sales for Union Process, stated. “First, there is no longer a need to remove the entire tank to separate the product and grinding media with a screen. The new discharge valve allows for easy sampling or removal of final material when grinding is complete. Secondly, clea...