MIL-DTL-8795G
4.5.2 Proof pressure (see 3.3.2). Proof pressure individual inspections (see table II.) Each hose
assembly shall be subjected to the hydraulic proof pressure in accordance with ASTM D380 and shall
meet the requirements of 3.3.2. The following details shall apply:
a. Proof pressure shall be as specified in table I.
b. Pressure shall be applied for a period of not less than 30 seconds and not more than 5
minutes.
4.5.3 Bulge test (see 3.3.3). Hose assemblies shall be measured for bulging of the hose inner tube
caused by the attachment of the hose to the adapter and shall meet the requirements of 3.3.3. The
following details shall apply:
a. A ball-type gauge, size as shown in table IV, is recommended for the bulge measurement.
b. The diameter of the ball gauge shall be within ±.001 inch (0.03 mm) of the C diameter shown
on figure 1.
c. Holding the hose in a vertical position, the gauge is inserted into the end of the hose assembly
at the bulge inspection point C shown on figure 1.
d. The gauge shall fall through the section at the end of the adapter in the hose under its own
weight without lubrication and without forcing the gauge through the adapter-to-hose
interfacing section.
TABLE IV. Ball gauges. 1/ 2/ 3/
Ball
Dash
Weight
Weight
Volume
diameter
number
3
in
(size) inches (mm)
ounces
grams
-3
0.080 (2.03)
0.00027
0.0012
0.034
-4
0.132 (3.35)
0.00120
0.0054
0.154
-5
0.200 (5.08)
0.00419
0.0188
0.534
-6
0.260 (6.60)
0.00920
0.0414
1.173
-8
0.350 (8.89)
0.02245
0.1010
2.862
-10
0.450 (11.43)
0.04771
0.2146
6.083
-12
0.575 (14.61)
0.09954
0.4477
12.691
-16
0.781 (19.84)
0.24943
1.1218
31.803
-20
1.015 (25.78)
0.54752
2.4624
69.808
-24
1.25 (31.75)
1.02265
4.5993 130.388
-32
1.719 (43.66)
2.65966
11.9615 339.106
-40
2.178 (55.32)
5.40968
24.3297 689.735
-48
2.803 (71.20)
11.53102
51.8594 1470.206
1/ Dimensions are in inches.
2/ Metric equivalents age given for information only.
3/ Steel balls are used to ensure that hoses are free of debris
and bulging rubber.
8
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