Figure 15-4.--Nipples, plugs, cap, and bushing.
ground lower portion, allowing for a leakproofjoint that
of the system in which it is installed. It will also depend
will align itself when the flange bolts are tightened.
upon the construction period of the ship. The piping
system index will give you useful information on this
Flanges can be attached to pipes and tubing by
point. Flanged joints are sealed by the use of special
welding, brazing, rolling, flaring, or (in some
gasket materials. The gasket materials will be
low-pressure systems) with screw threads. The method
discussed later in this chapter.
used will depend upon the size of pipe and the service
15-7