MIL-HDBK-1005/7A
7.2.6
Testing . All new or repair pipes should undergo a
hydrostatic pressure test before being put into service. Each
pressure section should be isolated and pressure tested
according to AWWA C600, Installation of Ductile -Iron Water Mains
and Their Appurtenances. Each gravity and pressure section
should be tested for leakage. Leakage should not exceed rates
specified in AWWA standard for pipe material being tested.
7.2.7
Disinfection .
Refer to AWWA C651, Disinfecting Water
Mains for criteria.
7.3
Corrosion Protection . Refer to AWWA Manual M27,
External Corrosion - Introduction to Chemistry and Control , for
corrosion protection and MIL-HDBK-1004/10, Electrical
Engineering Cathodic Protection.
7.3.1
Methods of Protection. Using corrosion resistant
material, bolts and connectors subject to corrosion should be
more resistant in composition than the main piping metal.
Install dielectric fittings between ferrous mains and cuprous
building services.
7.3.2
Treatment of Water.
Refer to Section 6 for acceptable
methods of treatment.
7.4
Valves and Hydrants
7.4.1
Valves. See Table 16 for the availability of types of
valves and their applications.
7.4.1.1
General Purpose Valves
a)
Gate Valves. Refer to the criteria for control
valves for distribution systems in MIL-HDBK-1008C and AWWA
Manual M44, Distribution Valves: Selection, Installation, Field
Testing, and Maintenance. Use valves conforming to AWWA
Standard C500, Metal-Seated Gate Valves for Water Supply
Service ; AWWA Standard C509, Resilient-Seated Gate Valves for
Water Supply Service .
b)
Butterfly Valves. Use the same criteria as was
recommended for gate valves; also use AWWA Standard C504,
Rubber-Seated Butterfly Valves.
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