Available Technology

Quiet opening ball valve

A valve uniquely integrates ball valve and throttling valve principals, thus affording quieter stop-and-start operation. A ball held by two seat rings is rotatable ninety degrees and has a diametric bore adjustable between fully closed (0°) and fully open (90°) positions. Oppositely disposed, relative to both the ball and the valve's longitudinal axis, are two plate assemblies each describing a tortuous fluid path. Each ring has conduits communicating with an assembly's tortuous path and communicable with the bore so that, sequentially during the ball's 0° to 90° rotation: the ball seals off the conduits, no fluid passing through the valve; all fluid passing through the valve flows through the plate assemblies and conduits; some fluid passing through the valve flows through the plate assemblies and conduits, some fluid passing through the valve flowing freely; the ball seals off the conduits, all fluid passing through the valve flowing freely.
Inventors: 

Matthew E. York

Patent Number: 
US7178782
Patent Issue Date: 
March 20, 2007
Lab Representatives
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