MIL-P-19692E
torque in excess of 3 times the maximum torque requirements of the pump.
3.5.5 Ports.
Ports shall incorporate ring locked type boss fittings
conforming to SAE-AS1300 for systems up to 5000 psi, and SAE-AS4201 for
systems above 5000 psi, unless otherwise specified in the detail pump
specification.
3.5.5.1 Structural strength. The structural design of the ports and of
the affected sections of the pump housing shall be such as to withstand the
application of a torque 2.5 times the maximum value specified in MS21344,
resulting from the attachment or removal of fittings and hoses when installing
or removing pumps during field maintenance, without permanent distortion or
impairment of function.
3.5.5.2 Port markings. Inlet, outlet, and case drain ports shall be
identified in accordance with MIL-STD-130 on each pump with clear and
permanent markings.
3.6 Detail requirements,
3.6.1 Material. Materials used shall conform to the applicable pump
specifications and be compatible with the hydraulic fluid. The pump
manufacturer's material specifications are acceptable provided they are
approved by the contracting activity and contain provisions for adequate
tests. The use of the pump manufacturer's specifications shall not constitute
waiver of other applicable specifications.
3.6.1.1 Metals. All metals shall be compatible with the hydraulic fluid
and applicable temperature, function, service, and storage conditions.
Magnesium shall not be used. To minimize the corrosion of internal parts in
fluids with chlorine levels over 100 ppm and water levels over 250 ppm,
ferrous alloys shall have a chromium content of not less than 12 percent such
as 440C and BG-42 or shall be protected against corrosion as specified in
3.6.1.2. O-ring grooves for external seals shall not be considered as
internal surfaces in constant contact with hydraulic fluid. The use of
alternative materials and processes requires approval of the contracting
activity. Such materials or processes shall be selected so as to provide the
maximum degree of corrosion resistance consistent with the performance
requirements.
3.6.1.2 Corrosion protection. Metals which do not inherently possess
corrosion-resisting characteristics shall be protected to resist corrosion
which may result from such conditions as dissimilar metal combinations,
moisture, salt spray, or high temperature deterioration. Ferrous alloys
requiring corrosion preventive treatment, and all copper alloys, except for
parts having bearing surfaces, shall have an electrodeposited metallic coating
selected from table III. Tin plating, cadmium plating, and zinc plating shall
not be used for internal parts or parts where internal surfaces in contact
with hydraulic fluid or exposed to its vapors and not where subject to
abrasion. Where not indicated in the contract, selection of class and type of
l6
For Parts Inquires submit RFQ to Parts Hangar, Inc.
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business