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SECTION 6 STANDARD CAST IRON PIPE FITTINGS CLASS 125, 250
Material: ASTM A126 Class A Minimum
Dimensions: ANSI/ASME B16.4
ANSI/ASME B1.20.1
Pressure ANSI/ASME B16.4
Ratings:
Coatings: ASTM A153
ASTM B633
Additional UL, ULC, FM, NSF 61 and
Specifications: NSF 61 Annex G where applicable
NPS
O.D. of
Band
(min)
Thread
Length
(min)
Metal
Thickness
(min)
1/4 0.97 0.36 0.11
3/8 1.16 0.40 0.12
1/2 1.38 0.47 0.13
3/4 1.67 0.54 0.15
1 1.99 0.62 0.17
1 1/4 2.43 0.71 0.18
1 1/2 2.72 0.74 0.20
2 3.32 0.79 0.22
2 1/2 3.90 0.96 0.24
3 4.66 1.02 0.26
3 1/2 5.24 1.07 0.28
4 5.83 1.12 0.31
Temp F˚ CLASS 125 CLASS 250
-20 TO 150 175 400
200 165 370
250 150 340
300 140 310
350 125 (Note1) 300
400 — 250 (Note 2)
The iron from which Class 125 cast iron fittings are made is
held to strict formula by careful chemical analysis and control.
Tapping is done on the most modern machines. All tappings are
to USA Standards for iron pipe threads. Straightness and
correct depth of threads is assured through continuous
capable inspection, by careful trained inspectors.
Every fitting is hand sorted and inspected to eliminate defective
castings.
WARD fittings are made to specifications published as
American National Standards for pipe fittings.
A chamfer is cut or cast in all openings, permitting easy
entrance of pipe and preventing damage to the first thread in
handling and threading.
Because of the close attention paid to formula control and the
use of modern precision equipment we are able to produce
castings of rugged strength and the ability to make a water
tight seal.
TEMPERATURE-PRESSURE RATING
Notes:
1) Permissible for service temperature
up to 360
°
F reflecting temperature of
saturated steam at 125 psi.
2) Permissible for service temperature
up to 406
°
F reflecting temperature of
saturated steam at 250 psig.
PSI
39