Close-up view of solid Penton needle and plug valves, as well as Penton pipes and fittings, at the Hercules Powder Company plant located in Parlin, New Jersey. Penton was a Hercules-branded chlorinated polyether used as an ingredient in protective coatings for structural steel and other metals, papers, cardboard, and plastics.
Formed in 1912 as part of an anti-trust settlement with DuPont, the Hercules Powder Company (later Hercules Inc.) initially specialized in the manufacture of explosives and smokeless powders and subsequently diversified its business to encompass a variety of industrial products, including pine and paper chemicals, synthetics, pigments, polymers, and cellulose.
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Hercules Incorporated. “Penton Valves and Pipes at Hercules Parlin Plant,” September 10, 1960. Photographs from the Records & Ephemera of Hercules Incorporated, Box 2, Folder 24. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/4m90dw26w.
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