Portable Flame Thrower M2-2

by United States. War Department

(b) Open needle valve No. 3 very slightly, which will lower the pressure.

(c) When 350 pounds is reached, close valve No. 3 tight.

Fig 37. Pressure regulator, spring-type.

Fig 38. Pressure regulator, dome-type, showing needle valves and wrenches.

(d) Close pressure-tank valve.

(e) When gage indicates zero, close needle valve No. 1 tight.

(11) Open pressure-tank valve and press the fuel valve to observe the pressure with the weapon operating.