Glass Water-Piping.

Cromwell Argus, Volume IV, Issue 185, 27 May 1873, Page 7

Glass Water-Piping.

Glass-lined iron pipes are now being manufactured by a company in New York! In these pipes the water comes in contact with nothing but glass, and, therefore, cannot become impregnated with any oxide ; and, there being no oxidisation or- corrosion, their purity and durability cannot be questioned. The inner surface of the pipes being perfectly smooth, the friction is small, and the flow of water is greater, and can be carried out in houses with less pressure than through other pipes of the same diameter. The lining between the iron pipe and the glass tube inside consists of plaster of Paris, a non-conductor of heat; this is intended to prevent the water from freezing in winter, and to keep it cooler in summer, thus preventing the pipes from bursting. The lining in the pipes is protected against moisture by a layer of hydraulic cement, which is put on the end of each length of pipe to prevent the plaster of Paris from being affected. The resisting power of the glass lined pipes is five times greater than lead, and the difference in the expansion and contraction between irou and glass is overcome by the compressible plastic substance betwten the two materials. The glass-lined pipes will be found useful for conveying chemicals and other liquids that are to be kept free from impurities, and also for ale and beer pumps, for con-! densing of salt water on steamers, purifying gas, and other purposes. It is a fact well known that a considerable percentage of gas escapes through the pores of the iron. When lined with glass this waste is prevented, and the pipes are rendered much more durable. The great expense of continual repairs is almost entirely overcome, and the cost is stated to be not much above that of lead pipes.