If the flask is to be mounted on the horizontal plane and the storage flask
is equipped with a drain valve in the flask, the flask must be tipped
downward at an angle so that the drain valve is at the lowest point as shown
in Figure 6-11. Normally the valve is located at least 6 inches below the
furthest low spot in the flask.
If the bottle is not equipped with a drain valve, provision may be to add the
valve or install a low-point suction line as shown in Figure 6-12.
6.
PREVENTION OF LINE FREEZE. In geographical locations where freezing
winter conditions prevail, provision must be included to prevent air line
freezing. Air line freezing occurs when the dew-point of the air is above the
ambient temperature. During operations when air is used from storage, the
pipes will collect condensate causing the outside of the pipe valves and
regulators to accumulate a layer of ice. Pipes should be insulated or
protected against the elements and wherever possible valves and regulators
should be mounted inside the building.
7.
ADDITIONAL INFORMATION ON COMPRESSORS AND COMPRESSED AIR DISTRIBUTION
SYSTEMS. For additional information on compressors and compressed air
distribution systems, refer to NAVFAC DM-3, Mechanical Engineering Design
Manual (see Reference (10)).
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