6. Avoid all short bends, and have all pipes as short and straight as practicable.
7. Use a strainer at the end of suction pipe; the holes in the strainer should be small, but their total area larger than the area of the supply pipe.
8. Insert stop valves in suction, steam and delivery pipes, to facilitate disconnection in cleaning injector and check valve in delivery pipe.
Figs. 520-533.
9. Have valve stems packed well; they often leak.
10. To remove incrustations caused by water containing lime or other impurities, place parts for a reasonable time in a bath of mineral oil or diluted muriatic acid consisting of 4 parts of water to 1 part of acid.
Note.—The lettered parts shown above apply to both the “Manhattan” and the “Peerless” injectors. See page [252] for the names of the parts corresponding with the letters.
The exhaust steam injector utilizes the escaping vapor from the engine cylinder, hence the saving in fuel and water is very marked where certain conditions are favorable.