MIL-W-52125B
6-inch pipe flanges on the unit, the suction hose line, or the pump. The spiral pipe shall be
0.062 inch nominal thickness and shall be coated inside and outside with asphaltum. Valves and fittings in accordance with table II shall be provided to complete the water system to the pressure hose at the plant. Each fitting shall be provided with a quick-detachable rubber-gasketed joint.
Table II. Pipe fittings.
Number required Description
2 22-1/2-degree elbow
2 45-degree elbow
4 90-degree elbow
1 6-inch pipe, 1-foot long,
with nipple and hose bib
on one side.
3.13.4 Waste-water flume. The waste-water flume shall consist of 10 sections of semicircular, open-top flume, each 10 feet long and not less than 16 inches wide; and four turn sections of which two shall be 90-degree right and two 90-degree left. All flume sections shall be made of steel 0.05 inch nominal thickness, with bolted lap joints.
3.14 Trailer components.
3.14.1 Frame. The trailer frame shall be constructed to withstand, without damage or permanent deformation, the static and dynamic loads imposed by operation and by being transported as specified in 3.17.
3.14.1.1 Upper fifth wheel and kingpin. The front of the semitrailer shall be constructed so as to be compatible for coupling with and towing by both the military M123, 10-ton truck-tractor and the M52, 5-ton, truck-tractor (see 3.31). The upper fifth wheel shall be of the full-width-type that permits coupling at any angle up to 75 degrees from straight ahead and shall cover a
36-inch-diameter lower fifth wheel. The upper fifth wheel assembly shall conform to
ICC 193.70. The plate shall be high tensile steel (not less than 50,000 psi yield point) and shall
be not less than 3/8 inch thick. The plate shall include a coupling ramp having not less than
1-1/4 inch vertical height. Unless the coupling ramp is protected by the number 1 crossmember,
drain holes shall be provided to prevent any collection of water. A universal kingpin conforming to MS53038, MS53039, and MS53040 with SAE J700 and J848 kingpins, shall be installed not less than 21 inches from the front of the semitrailer. The kingpin assembly shall permit access to allow personnel to reverse the kingpin without removal of other assemblies.
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