VARI-TUBE

ADJUSTABLE OUTLET COMPONENTS FOR LARGE INDUSTRIAL MECHANICAL COLLECTORS FOR DUST AND OTHER PARTICULATE MATTER PRODUCED DURING MANUFACTURING; SAID OUTLET COMPONENTS BEING NOZZLES OF DIFFERT DIMENSIONS CAPABLE OF INSERTION IN THE COLLLECTORS TO ALTER THE PRESSURE DROP BETWEEN SAID COLLECTORS AND OUTSIDE ENVIRONMENT, SOLD AS A COMPONENT PART OF SAID DUST COLLECTORS