90

tee

elbow

coupling

female adapter

union

male adapter

coupler

45

male adapter

reducer

union

45 degree elbow

Bent coupling

C x C sweat 90

C x C reduder

C x M adapter

Threaded coupling

Outside threaded union

45 degree elbow

90

Copper sweat 90

Street 45

Street 90

Sweat x female bushing

Inside threaded coupling

Straight union

Reducing coupling

45 degree elbow

Street 45

Offset coupling

Tee

Eared tee

C x C drop ear 90

Inside threaded 90

C x F drop eared 90

45

90

180

Street 45

Coupling

Reducing Coupling

Increaser Coupling

Both 2 & 3 depending on its direction

Sweat x female tee

Copper x female tee

C x F x C tee

All of the above are correct

It is required knowledge in the field and your job

It is important to know to be able to work efficiently

The same fitting may be called by several different names

All of the above are important reasons

Type DWV

Type L

Type K

Type M