ALEXANDRIA, Va., July 16 -- United States Patent no. 12,669,189, issued on June 30, was assigned to PREVCO Subsea LLC (Fountain Hills, Ariz.).
"Pressure relief valve (PRV) assembly including end-to-end coupled PRV stages and related methods" was invented by John Head (Fountain Hills, Ariz.) and James French (Chandler, Ariz.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A pressure relief valve (PRV) assembly may include PRV stages coupled in end-to-end relation. Each PRV stage may include a PRV body having a cavity therein to receive an adjacent PRV body therein and a fluid passageway fluidly coupled to the cavity. Each PRV stage may also include a PRV valve carried within the cavity and extending within the...