McQuay AC 40A - Page 34

Section: 3 Page 32
with reducing ends
Nipples are usually used
for joining different types
of fittings, e.g. an elbow
with a reducer.
ni
pp
le
External
thread
connector
Used for joining two
lengths of pipes
together
Internal
thread
Union/ coupling
Used for joining two
lengths of pipes
together
Made up of two halves,
each screwed into a
pipe end.
Both are then joined
with a locking nut in
between