three flanged pipe connections, one for each of the
three valves.
The stripping line installed just below the
stripping valve seat interconnects the flood and drain
manifold with the stripping main. This line is used
only to direct stripped liquids from the bottom of the
JP-5 storage tanks, by way of the single-valved
stripping manifold, to the suction side of the stripping
pumps.
The center line, installed just below the seat of
the sea chest cutout valve interconnects the manifold
to a sea chest supply riser. It is used only to direct sea
water from the sea chest to the storage tanks during
ballasting.
The other line, installed just below the seat of
the main drainage eductor valve, interconnects the
manifold to the suction side of a main drainage
eductor. This line is used only to direct ballast water
from the storage tanks to the main drainage eductor
when the tanks are being deballasted.
The flood and drain manifold has a locking
assembly that allows only one valve to be opened at a
time. Therefore, only one operation can be conducted
at a time; stripping, ballasting, or deballasting.
Each valve stem has an enlarged collar that
engages a sliding-bar locking assembly. Two of the
valves are always locked in the closed position. The
sliding-bar is actually a long piece of metal containing
three keyholes and two oblong slots. It is held in place
by two locknuts on a threaded bracket, extending up
from the manifold. To open a valve, the sliding-bar
must be moved so that the enlarged collar of the
valve
Figure 4-23.-Service fuel filter (vertical).
4-26
