Figure 5-11. - Closet tank water-supply line.

Figure 5-12. - Flushometer valve showing enlarged flow of backflow preventer.

integral trap (trap contained in fixture), it is not always necessary to provide the waste pipe with a separate chrome or iron trap. Integral trap urinals have a back spud fitting that connects the waste pipe and urinal together with a rubber seal in between. Install a mounting board on the wall where a urinal is to hang. This board will provide firm support for the urinal. The last step in the installation of the wall-hung urinal is the connection of a flushing mechanism, such as the diaphragm type of flushing valve. 5-8

Figure 5-13. - Diaphragm type of flushing valve.

BIDETS

A bidet is equipped with running cold and hot water and is used for bathing external genitals and posterior parts of the body. The bidet is installed mainly overseas; however, the bidet is becoming very popular in the United States.

The water is controlled by faucets the same as a lavatory. The flow of water may rise from the center of the bowl or around the rim. The bowl contains a stopper which holds water in the bowl if desired.

SINKS

Sinks are made in different patterns, each intended to serve specific purposes. Two common types of sinks are the kitchen sink and the service sink (slop sink).

Kitchen Sink

The KITCHEN sink is available in different sizes and may have either a single bowl or a double bowl. It is made of either enameled steel or enameled cast iron.

In the installation of a kitchen sink, it is important that the sink be built into a cabinet or hung from a bracket that is screwed to a mounting board (fig. 5-2). The bracket should be screwed into the mounting board in a position where the sink, when mounted, is at a convenient height for use. As a rule of thumb, the distance between the top of the drainboard and finished floor should not be less than 36 inches.