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Water hammer arrester

  • US 6,539,976 B1
  • Filed: 03/15/2002
  • Issued: 04/01/2003
  • Est. Priority Date: 03/15/2002
  • Status: Expired due to Fees
First Claim
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1. A water hammer arrester, comprising:

  • a hollow plastic body having a first end with a first opening and a second closed end, the second end disposed opposite from the first end;

    a metal fitting having a pipe stub and having an opening disposed in the center of the pipe stub, the fitting attached to the first end such that the opening in the fitting is in registry with the first opening in the plastic body, the plastic body being insert molded to the metal fitting;

    a piston having a first end and a second end and being slidable within the body;

    wherein a sealed chamber is formed between the second end of the piston and the second closed end of the body.

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