348 LIGHTING AND SANITARY EQUIPMENT 



deep. For satisfactory service, there should not be more 

 than twenty-five feet between the pump cylinder and the 

 lowest level of the water. A drain must be provided to take 

 off all waste water from the sink. Such a system can be 

 easily installed. 



320. Gravity System. The simplest gravity system is 

 one that has a small tank located in the attic and is connected 

 by means of a pipe to a force pump in the kitchen. Such a 

 system makes possible the installation of all other plumbing 

 equipment. Fig. 340 shows a system with a sixty-gallon 

 tank in the attic. Water is pumped to the tank by means of 

 a force pump and a small gasoline engine. The overflow 

 from the storage tank runs to the stock tank in the lot. A 

 good feature of this system is that all of the water for stock is 

 pumped thru the house tank, thereby keeping it always fresh 

 and cool. In Fig. 340 is shown also the installation of 

 complete plumbing connections. Where there is a hill or 

 slight elevation near the house, a tank can be placed on the 

 ground. The concrete tank shown in Fig. 341 is a farm 

 storage tank. It is large enough to supply the house, hog 

 house, hog wallows, barns and garage, all of which are pro- 

 vided with faucets. With the tank placed on the ground and 

 provided with a good foundation, there is no danger of sup- 

 ports giving away as with an elevated tank and the danger of 

 the pipes that lead to the tank freezing is eliminated. Where a 

 satisfactory means of elevating the tank is at hand, the grav- 

 ity system is the most satisfactory for average farm condi- 

 tions. A tank supported by concrete or masonry walls is a 

 very good arrangement. A room underneath the tank can 

 thus be provided to be used as a milk house. 



