MIL-PRF-12732F
3.3.1 Material deterioration prevention and control. The hypochlorinator shall be
fabricated from compatible materials, inherently corrosion resistant or treated to provide
protection against the various forms of corrosion and deterioration that may be encountered in
any of the applicable operating and storage environments to which the hypochlorinator may be
exposed.
3.3.1.1 Dissimilar metals. Dissimilar metals shall not be used in intimate contact with
each other unless protected against galvanic corrosion. Dissimilar metals and methods of
protection are defined and detailed in MIL-STD-889.
3.3.1.2. Identification of materials and finishes. The contractor shall identify the specific
material, material finish or treatment for use with component and subcomponent, and shall make
information available upon request to the contracting officer or designated representative.
3.3.2 Tubing.
3.3.2.1 Aluminum tubing. Aluminum tubing shall conform to ASTM B 210 or B 221.
3.3.2.2 Plastic tubing. All p1astic tubing sections between water supply, hypochlorite
solution reservoir, and hypochlorinator shall be nominal 3/8-inch inside diameter (ID) by
5/8-inch outside diameter (OD) or 5/l6-inch ID by 9/l6-inch OD, lengths as required. The tubing
shall be clear PVC and shall be reinforced with open mesh embedded nylon braid and shall have
a working pressure of 180 pounds per square inch (psi), at +70±5 °F (21±3 °C).
3.3.3 Pipe, tubing and pipe fittings. Metal pipe and tubings shall be of copper or brass.
Unless otherwise specified (see 6.2), pipe fittings sha1l be of brass or bronze. All metal pipe and
tubing shall withstand a hydrostatic pressure of not less than 100 pounds per square inch gage
(psig).
3.3.4 Rubber hose. The wastewater drain hose shall be nominal 3/4-inch ID by l-inch
OD, length 10 feet ±3 inches. The drain hose and other hoses connecting the water treating duct
to the water meter shall conform to A-A-59567, grade 3, class 2.
3.3.5 Recovered materials. For the purpose of this requirement, recovered materials are
those materials which have been collected from solid waste and reprocessed to become a source
of raw materials, as distinguished from virgin raw materials. The components, pieces and parts
incorporated in the unit may be newly fabricated from recovered materials to the maximum
extent practicable, provided the unit produced meets all other requirements of this specification.
Used, rebuilt or remanufactured components, pieces and parts shall not be incorporated in the
unit.
3.4 Threads. Threads shall be in accordance with FED-STD-H28.
3.5 Environmental conditions.
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