ALEXANDRIA, Va., April 15 -- United States Patent no. 12,601,418, issued on April 14, was assigned to ZURN WATER LLC (Milwaukee).
"Relief valve assembly" was invented by William M. Orr (Paso Robles, Calif.).
According to the abstract* released by the U.S. Patent & Trademark Office: "A relief valve for a backflow preventer includes a plunger, a lock nut, and a seal. The plunger has a female fastening section and a first seal engagement surface. The lock nut has a male fastening section and a second seal engagement surface. The male fastening section is received by the female fastening section to bring the first seal engagement surface toward the second seal engagement surface. The seal is positioned between the first seal engagement surfac...