240 APPENDIX 



D, Half-inch gas pipe threaded as shown, and with 

 quarter-inch holes bored in its walls to permit the passage 

 of water. 



E, Ordinary pipe cap. 



F, Nuts. 



G, Coupling to attach faucet to end of pipe. 



In putting the apparatus together, the chief thing is to 

 square the ends of the tile so that the gasket and plate will 

 fit fairly snugly before the nut is tightened. The manner 

 of putting the parts together and setting the tile in place 

 in the tank will not be difficult for a mechanic, or indeed 

 the ordinary individual, to accomplish. In setting the 

 tile in place, a bed of the fine sand to be used in filling 

 the tank should first be laid to a sufficient depth that the 

 tile in being placed may rest firmly upon the sand. 



Figure 95 shows the manner in which the water in the 

 tank reaches the water gauges : 



A is a 2-inch tile. It may be larger. 



B, Section of half-inch gas pipe. 



C, A collar to carry the section of gas pipe and the gauge 

 seat. 



To prevent leaking, the joint between collar and opening 

 in wall of tank should be soldered on the inside. 



The tile lies loosely against the inner wall of the tank and 

 is filled with gravel to permit the more ready passage of 

 water from the sand to the section of gas pipe. This tile 

 also is laid in place upon a bed of the sand with which 

 the tank is to be filled later. After the tile are all in place, 

 more sand should be carefully introduced and packed 

 carefully around the sides of each until the sand stands 

 above the center of the tile, after which the tank should 

 be filled to the height of 3 feet above the center of the tile. 



