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AWWA C110/A21.10 Document Information:
Title
Ductile-Iron and Gray-Iron Fittings
American Water Works Association
Publication Date:
Jan 27, 2008
Scope:
This standard describes 3- to 48-in. (76- to 1,219-mm) gray-iron
or ductile-iron fittings to be used with ductile-iron pipe for
water, wastewater, and reclaimed water. Requirements for fittings
with mechanical joints and flanged joints are listed in Tables 3
through 21 at the end of this standard. This standard may also be
used for fittings with push-on joints or such other joints as may
be agreed on at the time of purchase.
For the 3- to 24-in. (76- to 610-mm) size range, ductile-iron
mechanical-joint fittings and ductile-iron push-on-joint fittings
are rated for 350-psi (2,413-kPa) working pressure. Ductile-iron
flange-joint fittings are rated for 250-psi (1,724-kPa) working
pressure; however, 24-in. (610-mm) and smaller sizes may be rated
for 350 psi (2,413 kPa) with the use of special gaskets. Gray-iron
fittings having all types of joints described in this standard are
rated for 150- or 250-psi (1,034- or 1,724-kPa) working pressures,
as shown in the tables.
For the 30- to 48-in. (762- to 1,219-mm) size range, fittings
with all types of joints described in this standard are shown in
the tables with rated working pressures of 150 or 250 psi (1,034 or
1,724 kPa), depending on the type of iron as shown in the
tables.
Fittings are adequate for the rated working pressure plus a
surge allowance of 100 psi or a surge allowance of half the rated
working pressure, whichever is less.
Purpose
The purpose of this standard is to provide the minimum
requirements for ductile-iron and gray-iron fittings, 3 in. through
48 in. (76 mm through 1,219 mm), for water, wastewater, and
reclaimed water.
Application
This standard can be referenced in specifications for
ductile-iron and gray-iron fittings, 3 in. through 48 in. (76 mm
through 1,219 mm), for water. The stipulations of this standard
apply when this document has been referenced and then only to
ductile-iron and gray-iron fittings, 3 in. through 48 in. (76 mm
through 1,219 mm), for water.
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