Barnes & Jones traces its roots to the work of engineers Walter Barnes and Bill Jones, who in the early 20th century developed quiet, efficient two‑pipe steam heating systems.  The company emphasizes that proper steam‑trap maintenance is key to efficiency and notes that its 1902 introduction of thermostatic steam traps and the 1930 “Cage Unit” revolutionized steam‑trap performance.  Barnes & Jones remains committed to manufacturing high‑quality steam traps and repair parts in the U.S., positioning itself as a trusted source for steam‑system solutions.