THE PASTEURIZATION OF MILK 



FIG. 22-B 



21. The chances of valve difficulties are thus 

 reduced. 



The arrangement of this valve is rather diffi- 

 cult to describe. It is shown in Fig. 22-B. A 

 central core is attached to the pipe, which de- 

 scends into it from the central tank. This core 

 remains stationary, and is provided with a sin- 

 gle opening, which is a continuation of and is at 

 right angles to the discharge pipe from the tank 

 102 



