MIL-P-24475 (SHIPS)
3. 3.1.1 Pumps shall have constantly rising head capacity characteristic curves. Pumps
with capacities of 50 g. p.m. or more shall have head capacity characteristic curves such
that total head at shutoff iS not less than 10 percent above total head at rated capacity
and the total flow at rated head, less 10 feet, is not greater than 250 percent rated flow.
3.3.1.2 Casing wearing rings shall be fitted in pumps where required by design.
3.3.1.3 Casing wearing r ings shall be secured by means of set screws which are equally
spaced or Interference fit.
3.4
Materials.
3.4.1 The materials of the pump shall conform to the materials specified in 6.3. How-
ever, this specification is not intended to be restrictive provided proposed alternate mate-
rials will give equal or better service than the materials specified. Proposed alternate
materials shall be subject to review by the procuring agency. Components of the pump
for which specific materials are not specified shall be materials best suited for the service
Intended. Materials which can be sensistized and are subjected to heat treatment in the
sensistization range during fabrication shall be capable of passing the intergranular corrosion
tests of the base material specifications. Particular attention should be given to avoiding
sensitization of materials during hard facing. stress relieving. or repair welding.
3.5 Drawings. Drawings shall conform to the requirements of categories A, G, H, I and
J, form 2 of MIL-D-1000 and types II and III of MIL-D-1000/2, as specified (see 6.1).
3.5.1 Drawing content.
3,5.1.1 General requirements.
3. 5.1.1.1 "Manufacturer's Use Only" notes. Information intended for manufacturer's use
only shall be so designated Conversely, on a commercial drawing with wide usage it is
permissible to designate portions thereon, "For Navy Use Only".
3.5.1.1.2 Dimensional tolerance. Unless otherwise indicated by note, legend, or key,
all tolerances shown on a drawing must be compiled with during both manufacture and main-
tenance repair.
3.5.1.2 Sectional assembly drawings.
Sectional assembly drawings shall include a
sectional assembly with references to applicable detail drawings. All running clearances
shall be shown and shall be dimensioned as radial clearances.
(The radial clearance equals
one half the diametral clearance.) Tightening torques and thread lubrication requirements
for threaded fasteners shall be shown on the assembly drawing.
3.5.1.3 List of material. The list of material shall include every part required in
the pump assembly, including those parts not required to be detailed. This may necessitate
some side or partial views in order to show parts not otherwise shown in the main section
view.
The list of material shall include an indication of each part required by this
specification to be furnished as an onboard repair part (this is not a repair parts list) .
The list of material shall include the manufacturer's drawing number and service part
number for all parts which detail drawings are required (see 3.5.1.4). Parts shall be named
to indicate the function they serve.
3.5.1.4 Detail drawings. Detail drawings shall be furnished of all parts and sub-
assemblies necessary or evaluation of the equipment, and of all parts necessary for main-
tenance, and overhaul of the pumps. Details of these parts shall be so complete as to
permit emergency manufacture by a Naval shipyard without assistance from the original man-
Details of pump casings shall be furnished, but the dimensioned development
ufacturer.
of cored hydraulic passages need not be shown. Subassemblies whose parts cannot be pro-
cured or serviced individually, should be shown as a single part and so indicated. Multi-
detail drawings are preferred, but monodetail drawings may be used.
3.5.1.5 Outline drawing and certification data.
3.5.1.5.1 Outline drawings and certification data shall be furnished as supplemental
drawings to all sectional assembly and detail drawings. Separate outline drawings. drawing
lists and certification data shall be furnished under each contract or order unless the
complete equipments covered by the outlinge drawing and the referenced drawings are in fact
identical in all respects.
9
For Parts Inquires call Parts Hangar, Inc (727) 493-0744
© Copyright 2015 Integrated Publishing, Inc.
A Service Disabled Veteran Owned Small Business