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Rolling stock manufacturers of Spain (4 C, 3 P) S. Shipbuilding companies of Spain (1 C, 3 P) Sporting goods manufacturers of Spain (5 P) T. Textile companies of ...
The Duriron Company is an industrial component manufacturer of such products as automatic control valves, valves and actuators, pumps, sealing systems, filtration equipment, pipes and fittings. The company was incorporated in 1912 as the Duriron Casting Company in Dayton, Ohio by John R. Pitman, William E. Hall, and Pierce D. Schenck. [1]
Gate valves may have flanged ends drilled according to pipeline-compatible flange dimensional standards. Gate valves are typically constructed from cast iron, cast carbon steel, ductile iron, gunmetal, stainless steel, alloy steels, and forged steels. All-metal gate valves are used in ultra-high vacuum chambers to isolate regions of the chamber ...
In 1955, American shipped its first large order of ductile iron pipe. A new melting system in 1972, including the largest cupola of its kind in the world, would supply the new iron for this pipe, and American would move from a Sand Spun casting process to a generation of deLavaud metal molds, still used today.
Outside of the US, the ductile iron pipe industry is supported by associations including the European Association for Ductile Iron Pipe Systems. [ 25 ] Following the financial crisis of 2008, the pipe industry as a whole, experienced a decrease in sales in the US due to municipalities deferring replacement of water mains and reduction in new ...
While most varieties of cast iron are weak in tension and brittle, ductile iron has much more impact and fatigue resistance, due to its nodular graphite inclusions. Augustus F. Meehan was awarded U.S. patent 1,790,552 in January 1931 for inoculating iron with calcium silicide to produce ductile iron subsequently licensed as Meehanite , still ...
Galvanized steel (often known simply as "galv" or "iron" in the plumbing trade) is relatively expensive, and difficult to work with due to weight and requirement of a pipe threader. It remains in common use for repair of existing "galv" systems and to satisfy building code non-combustibility requirements typically found in hotels, apartment ...
Valves are available in several types, based on design and purpose: Gate, plug, or ball valves – Isolation; Globe valve – Throttling; Needle valve – Throttling, usually with high precision but low flow; Butterfly or diaphragm valves – Isolation and throttling; Check valve – Preventing reverse flow (non-return)
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