Floyd Cailloux was born in Ged, Louisiana. His family followed the Oil Booms for many years, ending up in Oklahoma City, Oklahoma. It was during this time, witnessing the growth of the oil industry, that Cailloux formed the work ethics that made him a successful businessman.
Cailloux started his career after college at American Iron and Machine Works in Houston, Texas. He worked in the manufacturing plan in 1936 and 1937. He was promoted to Outside Sales and Service and headed up the office in Corpus Christi, Texas. He continued to move up in the company as a Sales Engineer in offices in Lake Charles and New Iberia, Louisiana. He was then moved to the new office in Clay City, Illinois, followed with an assignment in Oklahoma City, Oklahoma. In 1942, his career was interrupted by service in World War II. He served the U.S. Army until 1946, when Cailloux was honorably discharged as a First Sergeant.
Upon re-entering the work force, Cailloux purchased controlling interest in C&W Machine Works in Great Bend, Kansas. C&W grew to have offices and plants in Liberal and Plainville, Kansas under Cailloux's leadership. In 1949, C&W purchased L&H Machine Works in Houston, Texas. Cailloux and his wife, Kathleen moved to Houston.
Later Cailloux sold his interest in the L&H Machine Works and founded System Engineering and Manufacturing Company (SEMCO). SEMCO was an engineered manufacturing and construction company specializing in pneumatic conveyance systems. Cailloux served as Chairman of the Board and Chief Executive Officer of SEMCO as it grew to have an international presence. In 1968, Cailloux purchased controlling interest in Keystone Valve Corporation. KVC manufactured and sold butterfly valves to a variety of industrial users. When Cailloux became Chairman of Keystone in 1968, Keystone had annual sales of $14 million and employed approximately 220 employees. In 1995, Keystone had annual sales of $597 million and employed 4,250 people in 31 countries around the world. Keystone International was sold to Tyco International following Cailloux's death in 1997.
Cailloux was initiated into Myrtle Chapter DeMolay in Oklahoma City, Oklahoma, in 1932. He received the 32nd Degree of the Scottish Rite in 1940 and the Honorary 33rd Degree of the Scottish Rite in 1981. Cailloux held membership in Oak Forest Lodge #1398, Lorenzo DeZavala Lodge #1397, India Shrine Temple in Oklahoma, Shrine Club in Texas, Arabia Shrine Temple, Royal Order of Jesters, York Rite Houston Chapter and Council, Red Cross of Constantine, and High Twelve Club. He received the DeMolay Legion of Honor in 1995. Cailloux was inducted into the DeMolay Hall of Fame on June 21, 1996.
"DeMolay was the first step on the path to fraternal comradeship that has been an intricate part of my life. The vast majority of the persons who shaped my life and contributed to my success have had an involvement in the Masonic fraternities."