E-shots Web-exclusive: Shutoff deal on for Spirex and Glycon
March 1, 2006
Spirex Corp. (Youngstown, OH) has entered into an exclusive worldwide agreement with Glycon Corp. (Tecumseh, MI) to sell its innovative, three-piece, QSO (quick shutoff) nonreturn valve. Unlike conventional ball-and-ring check valves, material pressure on the face of the QSO's self-centering poppet drives it back against the valve seat, almost instantaneously shutting off melt flow, so part weight is said to vary by as little as .1% with many materials.
During recovery, the melt enters the valve through humongous entry ports, pushing the poppet open so it can flow through smooth, wide-open, evenly spaced axial grooves free of obstructions and sharp corners, thereby reducing any chance of burning and degradation. The valves are constructed from heat-treated, nitrided tool steel. Valve sealing surfaces are precision ground to reduce mating surface friction, and all interior surfaces are highly polished to smooth melt flow.
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