MIL-PRF-53051B
service. Type II pumping assemblies may be constructed of any materials suitable for potable
water pumping service. Lead shall not be used. The finished type II pumping assembly shall
contain no materials or substances that might leak or disintegrate and cause the pumped water to
become non-potable. The material shall have no adverse effect on the health of personnel when
used for its intended purpose. The lines and all surfaces that contact potable water shall conform
to the applicable federal regulations for use with potable water.
3.2.1 Deterioration prevention and control. The pumping assemblies shall be fabricated from
compatible materials, inherently corrosion resistant or treated to provide protection against the
various forms of corrosion and deterioration to which the material is susceptible.
3.2.1.1 Dissimilar metals. Dissimilar metals shall not be used in intimate contact with each
other unless protected against galvanic corrosion.
3.2.2 Recycled, recovered, or environmentally preferable materials. Recycled, recovered, or
environmentally preferable materials should be used to the maximum extent possible provided that
the material meets or exceeds the operational and maintenance requirements, and promotes
economically advantageous life cycle costs.
3.3 Environmental conditions.
3.3.1 Operating temperature. Pumping assemblies shall perform as specified herein in the
following ambient temperatures (see 4.5.2 and 4.5.3).
High temperature °F
Size
Low temperature °F
Type
Type I
Size 1
-25
120
Type I
Size 2
-25
135
Type II
Size 1
32
120
Type II
Size 2
32
135
3.3.2 Storage temperature. Pumping assemblies shall not be damaged by storage in any
ambient temperature from -65 °F to 155 °F, except type I, size 2 and type II, size 2 that shall
withstand -65 °F to 160 °F (see 4.5.2 and 4.5.3).
3.3.3 Drop. Each pumping assembly shall be capable of withstanding drops onto its pintle and
frame, about its axle, without permanent damage, deformation, or performance degradation.
3.3.4 Shock. The pump assemblies in transit condition, and prepared for field use, shall be
capable of withstanding the shocks normally induced by loading and unloading and impact at
speeds up to 8 miles per hour.
3.3.5 Fording capability. The pumping assemblies shall be capable of fording in water to a
depth of not less than 30.00 inches without damage.
3.3.6 Slope capability. Type I, size 1, and type II, size 1, pumping assemblies shall be capable
of negotiating side slopes up to 20 percent; and approach, negotiate, and depart a ramp of up to
30 percent slope without contact of any component (except the tires).
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