Water Supply.
—The water supply taken from the street main is conducted to the house by the pipe shown in Fig. 58, at C. This pipe is generally of lead as piping of that metal is the most durable for underground work. Iron used under the same conditions will last only a few years. The connection is made with the water main by use of a corporation cock. This is a special style of cock that is shown in Fig. 63. In the figure the cock is connected with a short piece of lead pipe that is used for making connection with the service pipe in the house.
Located at the left of C, in Fig. 58, is the curb-cock, used for shutting off the water from the city lot. The curb-cock, being underground, is reached through an iron tube by means of a wrench attached to a long iron rod. The curb-cock has a protective covering in the form of an iron pipe. The lower end of the pipe screws into the body of the cock. The top end comes just above the grade line of the curb and is covered with an iron screw-cap. The curb-cock is shown in detail in Fig. 64. The pipe B is fastened to the valve at D and A is the screw-cap. In opening and closing the wrench fits over the part C of the valve.
On entering the building the supply pipe should be provided with a stop and waste-cock for shutting off the water from the house and draining the pipes that compose the system of circulation. At V, in Fig. 58, is indicated a stop and waste-cock with the waste pipe B connected with the sewer. This cock is shown in detail in Figs. 65 and 66. The cock is so made that when closed there is a small opening at A, that allows the water from the system to escape through the waste pipe.
From the water supply, the cold-water pipes may be traced in the drawing directly to each of the fixtures of the house. The hot-water pipe leaves the range boiler at the top and connects with each fixture using hot water, thus making the circuit complete. Details of the piping which provides hot water is described under range boiler, [page 116].
Fig 65.—Stop and drain cock with lever handle.
Fig. 66.—Stop and drain cock with T handle.