MIL-DTL-20176G
3.6.6 Hydrostatic proof pressure. When tested as specified in 4.6.5 at the appropriate proof
pressure (see table III), the hose assemblies shall not leak nor show any imperfections in either the
hose or the fittings. There shall be no indication of slippage or pullout of the fitting from the
hose.
3.6.7 Burst pressure. When tested as specified in 4.6.7, each size hose or hose assembly shall
have no failure of hose under the applicable minimum burst pressure shown in table III.
3.7 Fittings.
3.7.1 Quick-disconnect cam-locking couplings. Unless otherwise specified (see 6.2), hose shall
be fitted with quick-disconnect cam-locking male and female brass couplings. Male couplings
shall conform to MS27021, type II. Female couplings shall conform to MS27025, type VI. Brass
male and female couplings shall be made of material conforming to ASTM B 271, alloy C83600
or C92200. When aluminum material is specified (see 6.2), couplings shall be made of hard-
coated anodized aluminum conforming to ASTM B 26/B26, alloy 356.0, temper T6 (see 4.6.13).
3.7.2 Coupling caps. When specified (see 6.2), the male couplings shall be provided with
MS27028, type IX dust caps, and the female couplings shall be provided with MS27029, type X
dust plugs. Brass dust caps and dust plugs shall be made of material conforming to ASTM B 271,
alloy C83600 or C92200. Aluminum dust caps and dust plugs shall be made of material
conforming to ASTM B 26/B26, alloy 356.0, temper T6 (see 4.6.13).
3.7.3 Clamps. Unless otherwise specified (see 6.2), clamps shall be made of corrosion-resistant
steel and shall conform to A-A-52506. Two 0.75-inch (19 mm) clamps shall be provided for each
coupling on the 2.5- and 4-inch (64 and 102 mm) id hose. For the 1.5-inch (38 mm) id hose,
either one 0.75-inch (19 mm) clamp or two 0.50-inch (13 mm) clamps shall be provided. The
clamps shall be capable of holding couplings in place on the hose without slipping or leaking when
subjected to the hydrostatic proof test specified in 4.6.5, and the pull force test specified in 4.6.8.
3.8 Marking. Each length of hose shall be marked with a color that contrasts with the color of
the hose cover. The marking shall consist of:
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The manufacturer's name or trademark.
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The quarter and year of manufacture.
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The symbol MIL-PRF-20176G.
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The maximum allowable working pressure followed by the designation "MAWP" and the
word "SEWAGE" for type I hose, and the words "OILY WASTE" for type II hose.
Hose shall be marked continuously or at regular intervals of not greater than 10 feet (3 048 mm).
All letters and numbers shall be not less than 0.25-inch (6 mm) for size 1.5 (38 mm) hose , and
0.75-inch (19 mm) for sizes 2.5 and 4.0 (64 and 102 mm). The designations "SEWAGE" and
"OILY WASTE" which shall have letters not less than 1-inch (25 mm) (see 4.4.1).
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