Vacco Industries, Inc.

George Kay

Alan Keskinen

A flow restrictor to minimize noise and cavitation, or other adverse effects, in regulating the flow of a high pressure fluid. The restrictor defines a myriad of tortuous, dissimilar, intertwined, and commingled energy dissipating chambered flow paths edgewise through a stack of sheets of perforated stock material. Adjacent sheets have their perforations out of registration with one another, the inlet and outlet to the restrictor being edgewise through the stack through open-sided ones of the perforations of the several sheets of stock.

Perforated sheet stock flow restrictor

A fluid flow restrictor for spanning a passage of a body to minimize noise and cavitation in a high pressure fluid flowing through the passage and undergoing a substantial pressure drop in passing through the restrictor. The device comprises at least one tier of fixed perforated tubelets defining a myriad of tortuous flow paths with restricted orifices and expansion areas to dissipate energy in the fluid. The fluid flow through or between individual tubelets may be further subdivided into restriction orifices and expansion areas by additional fixedly held solid elements, e.g., BB shot tightly packed within the tubelets. The preferred inventive embodiment described is a sound suppressing, high pressure reducing poppet valve having several tiers, isolated from one another, of annular clamped arrays of parallel perforated tubelets.

Multi-tube flow restrictor

A sound suppressing fluid handling device wherein a relatively high pressure fluid is conducted through a substantial pressure drop, relatively noiselessly, by passage of the fluid through a myriad of tortuous energy dissipating passages formed between adjacent turns of and opening through the ends of a sound suppressing reel comprising a relatively thin flexible spirally wound band. The preferred inventive embodiment described is a valve comprising a stack of annular discs seating coaxially against the inlet end of the sound suppressing reel and containing passages, formed partly between adjacent discs, for conducting the incoming high pressure fluid from the central opening in the disc stack to the inlet ends of the reel passages.

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Anaheim, CA, United States of America

George Kay