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Quiet flow control washer for water softener or the like

  • US 6,776,901 B1
  • Filed: 11/30/2001
  • Issued: 08/17/2004
  • Est. Priority Date: 11/30/2001
  • Status: Active Grant
First Claim
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1. A flow control comprising:

  • (A) a conduit including an inlet, an outlet, and an outer peripheral surface, a gas inlet passage being formed in said conduit and being configured to permit a gas to enter said conduit between said inlet and said outlet; and

    (B) a flow control washer that is disposed in said conduit between said inlet and said outlet, said flow control washer being configured to maintain a generally constant volumetric liquid flow rate through said flow control despite pressure fluctuations at said inlet of said conduit, wherein said gas inlet passage opens into a low pressure region of said conduit located between said flow control washer and said outlet, wherein said low pressure region comprises a venturi, said venturi including a throat, an inlet portion that is located upstream of said throat and that tapers inwardly toward said throat, and an outlet portion that is located downstream of said throat and that tapers outwardly away from said throat, and wherein said gas inlet passage opens into said venturi downstream of said inlet portion, wherein said venturi is formed in said conduit, and wherein said conduit is formed from two interconnected sections, and wherein said flow control washer is positioned between said sections.

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