Stoneware jointing

CViemical Ware Acidproof chemical-stoneware pipe and fittings withstand most acid, alkah, or other corrosives, the main exception being hydrofluoric acid. The range of sizes made with the bell-and-spigot joint and with plain butt ends is shown in Table 10-40. 

In the majority of stoneware constructions some form of joint has to be provided, and in runs of piping there will be very many joints, which frequently fail owing to failures in the jointing material. It is essential that all... 

In this method of jointing stoneware piping, the joint is formed by a gasket between ground ends of the pipe, the joint being put under compression by a metal clamp. The choice of gasket material will of course depend upon service conditions. 

The ozonized air is conducted through stoneware pipelines with pitch joints. The circuits are arranged so that the pressure runs are as short as possible and the negative pressure sections are longer. Thus the top of each column is open to atmosphere and the moist air collectors, air conditioners, dry air collectors, and ozonizers are all operated under negative pressure. 

The tar or pitch joints in the stoneware pipelines have been a source of frequent mishaps and leakage, accounting for the bulk of maintenance expenses at Saint-Maur. 

Residual Clay. See primary clay. Resinous Cement. A term used in chemical engineering for an acid-proof cement, based on synthetic resin, for jointing chemical stoneware or acid-resisting bricks. The cement, when set, is impervious and very hard. 

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