TM 1-1500-204-23-2
WARNING
Hoses to be tested shall be securely restrained to prevent whipping In case the fittings should blow off.
Longer hoses should have several restraints. The test is best conducted with hose in an enclosure having
a heavy transparent plastic cover which can be fastened closed. Personnel shall wear eye and face
protection. Failure to comply may result in injury or death.
CAUTION
Make no adjustments, under any condition, of assembly gap or position angle after test and final
acceptance of completed hose assemblies. Install the following polyethylene protective plugs in end
fittings of hose assemblies that are not to be installed immediately after fabrication NAS 815-(*size) A
(*same dash number as fitting). Close openings in flanges (or other special fittings) using pressure
sensitive tape or other adequate means to prevent entrance of foreign material. Failure to comply may
result in contamination of the hydraulic system.
Table 4-15. Operating, Proof, and Burst Test Pressures for MS28759 and MS28762 Hose Assemblies
Minimum
Operating
Proof
Burst
Inside Bend
inner dia.
Tube OD
Hose
pressure
pressure
pressure
radius
at bulge
Size
(Inches)
assembly
(psi)
(psi)
(psi) (min)
(Inches)
(inches)
-4
1/4
MS28759
3000
8000
16,000
3
0.146
MS28762
-5
5/16
MS28759
3000
7000
14,000
3 3/8
0.177
MS28762
-6
3/8
MS28759
3000
7000
14,000
5
0.271
MS28762
-8
1/2
MS28759
3000
7000
14,000
5 3/4
0.365
MS28762
-10
3/8
MS28759
3000
6000
12,000
6 1/2
0.455
MS28762
-12
3/4
MS28759
3000
6000
12,000
7 3/4
0.568
MS28762
-16
1
MS28759
3000
5000
19,000
95/8
0.778
MS28762
4-47
