US Patent Issued to PREVCO Subsea on Nov. 25 for "Pressure relief valve assembly including series coupled valves and related methods" (Arizona Inventors)

ALEXANDRIA, Va., Nov. 25 -- United States Patent no. 12,480,589, issued on Nov. 25, was assigned to PREVCO Subsea LLC (Fountain Hills, Ariz.).

"Pressure relief valve assembly including series coupled valves and related methods" was invented by John Head (Fountain Hills, Ariz.), James French (Chandler, Ariz.) and Don Christensen (Fountain Hills, Ariz.).

According to the abstract* released by the U.S. Patent & Trademark Office: "A pressure relief valve (PRV) assembly may include a housing having an opening therein, an interior cavity, a passageway extending between the opening and the interior cavity, and a flange extending within the passageway adjacent the opening. The PRV assembly may also include a first stage valve carried within the i...