Patent ID: 8869829

Claim:
A pressure release valve assembly including a pressure intake unit and a pressure control unit wherein: the pressure intake unit comprises: a pressure outlet tube formed therein with an axially extending pressure outlet passage and having a pressure outlet portion at a top part thereof; a pressure intake tube provided with a pressure intake opening and formed therein with an axially extending pressure outlet passage that communicates with the pressure outlet passage of the pressure outlet tube, a connecting plug provided between the pressure outlet tube and the pressure intake tube, and a filtering cap attached to a lower end of the pressure intake tube so as to spacedly surround the pressure intake tube; and the pressure control unit comprises: a cylindrical pressure release casing provided with a pressure release opening in a lower portion thereof and is adapted to be connected to the pressure outlet tube of the pressure intake unit, a tubular pressure control element threadedly connected to an upper inside portion of the pressure release casing, a valve plunger provided in the tubular pressure control element and comprised of a shank portion and a beveled valve portion under the shank portion with the shank portion formed with an externally expanding supporting flange above the valve portion; and a coil spring provided around the shank portion of the valve plunger and between a lower end of the pressure control element and the supporting flange of the valve plunger.