TABLE II
FITTINGS
Service
Size
Type
Material
Specifications
Feedwater
38 mm and under
Screwed
pipe
50 mm and larger
Butt welded
Steel
ASME B16.9
Blowoff
38 mm and under
Butt welded
Steel
ASME B16.9,
lines
extra strong
50 mm and larger
Socket welded
Steel
ASME B16.11
extra strong
Flanged with
Steel
ASME B16.5
long radius
elbows
Water
38 mm and under
Screwed
column
extra strong
piping
Draft gauge All
Screwed
and O(2)
recorder
Fuel oil
All
Screwed,
(a)
flared or
Cast or wrought
ASME B16.18
brazed
bronze
ASME B16.26
Gauge pipe
All
Flared or
Cast or wrought
ASME B16.18
soldered
bronze
ASME B16.26
Natural
38 mm and under
Socket welded
ASME B16.11
Gas
50 mm and larger
Butt welded
ASME B16.9
TABLE II
FITTINGS
Service
Size
Type
Material
Specifications
Steam
1-1/2" and under Screwed or
Socket welded
Steel
ASME B16.11,
2" and larger
Flanged or
Steel
ASME B16.5
Butt welded
Steel
ASME B16.9
Condensate
1-1/2" and under Screwed or
Steel
ASME B16.11
return
Socket welded
extra strong
2" and larger
Butt welded
Steel
ASME B16.9
extra strong
Vent pipe
1-1/2" and under Screwed
2" and larger
Butt welded
Steel
ASME B16.9
Compressed
1-1/2"and under
Screwed
Zinc-coated
ASME B16.3
air
malleable iron
2" and larger
Butt welded
Steel
ASME B16.9
Boiler
1-1/2" and under Screwed or
Steel
ASME B16.11
feed
Socket welded
extra strong
2" and larger
Butt welded
Steel
ASME B16.9,
SECTION 15561A
Page 115