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SECTION 2
Material: ASTM A197
Dimensions: ASME B16.3
ANSI/ASME B1.20.1
Pressure ASME B16.3
Ratings:
Coatings: ASTM A153
ASTM B633
Additional UL, ULC, FM NSF 61 and
Specifications: NSF 61 Annex G where applicable
Temp. F˚
Size
1/4 - 1
Size
1 1/4 - 2
Size
2 1/2 - 3
-20 TO 150 2000 1500 1000
200 1785 1350 910
250 1575 1200 825
300 1360 1050 735
350 1150 900 650
400 935 750 560
450 725 600 475
500 510 450 385
550 300 300 300
NPS
O.D. of
Bands
Thread
Length
(min)
1/4 0.93 0.43
3/8 1.12 0.48
1/2 1.34 0.56
3/4 1.62 0.62
1 1.93 0.75
1 1/4 2.37 0.84
1 1/2 2.68 0.87
2 3.28 1.00
3 4.62 1.93
Extra Heavy Malleable Pipe Fittings
Class 300 - (A.A.R.)
General
Dimensions
In Inches
These dimen-
sions apply to
both straight
and reducing
fittings.
Table A
Pressure-Temperature Ratings
SIZES
Ward Class 300 Malleable Iron Fittings are designed to handle
higher pressures and more rugged service than our Class 150
fittings. Like all of Ward’s fittings, Class 300 fittings are made
with the most sophisticated metallurgical and processing
controls available. Ward’s quality assurance program ensures
that the iron is made with high quality raw materials and
processed according to rigorous standards. Iron samples are
continuously analyzed to ensure that a close grained, high
strength, non-porous iron is produced.
Ward starts with high quality iron, then accurately machines
threads that comply with the precise standards developed by
the American Society of Mechanical Engineers (ASME) and
published as an American National Standard. The threads
have an accurate form, thread length and straightness to allow
them to easily engage thread pipe. In addition, Ward fittings
have a chamfered opening to allow faster and easier pipe
engagement. This feature also protects the fitting threads from
damage during handling.
PSI
17