Brass and copper pipes may be united to other pipes of the same materials by screwed ends or by screwed unions, brass and copper pipes to lead by soldered joints, brass and copper to iron by caulked lead joints, as already described, or by screwed joints, and to pottery by cemented joints. A special brass connection is made for uniting a brass flush-pipe to the inlet horn of a closet (fig. 194). When the connection has been placed on the end of the horn, the clips AAA are pressed down over the projecting rim of the horn shown in section at B; the screw C is then tightened and makes a good joint by compressing the rubber ring D between the end of the horn and the brass flange E of the flush-pipe. For further details of connections between pottery and brass, see the chapters on sinks, lavatories, etc.

Fig. 192. Robinson's "Enable" Connection, Pottery to Lead.

Fig. 193. Doulton's "Metallo-keramic" Joint.