1、I MILITARY SPECIFICATION PUMP, HAND, AIR 21_Ausiist. lQR1 SUP E RS ED I NG 3 May 1965 MIL-P-8258C(XS) This specification is approved for use by the Naval Air Systems Command, Department of the Navy, rind is available for use by ali Departments and Agencies of the Department of Defense. k 1. SCOPE 1.
2、1 Scope. This specification covers one type of air hand pump for use with inflatable multi-place life raft assemblies. 2. APPLICABLE DOWMIZNTS 2.1 Thefollowing documents of the issue in effect on date of invitation for bids form a part of this specification to the extent specified herein. SP E CI F
3、I CATIONS Federal QQ-W- 3 2 1 Wire, Copper Alloy RR-C-271 - UU-T-81 Chains and Attachments , Welded, Weldless, and Roller Chain Tags, Shipping and Stock PPP-B- 5 6 6 Boxes, Folding, Paperboard PPP-B- 5 9 1 Boxes, Fiberboard, Wood-Cleated Y Beneficial comments (recomendations, additions, deletions) a
4、nd any pertinent data which may be.of use in impzoving this docunent should be addressed to : 93), Naval Air Engineering Center, Lakehurst, NJ 08733, by using the self-addressed Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this docunent or by letter. Engineeri
5、ng Specifications and Standards Department (Code Licensed by Information Handling ServicesML-P-8258D(AS) *c r SPECIFICATIONS (Continued) Federal (Continued) PPP-B-636 Box, Shipping, Fiberboard PPP-B-640 Boxes, Fiberboard, Corrugated, Triple Wall PPP-B-676 Boxes, Set-up .- PPP-T- 6 O Tape, Packaging,
6、 Waterproof Military MIL-P-7 9 -. Plastic Rods and Tubes, Thermosetting, Laminated MIL-P- 1 16 MIL- F- 2 2 1 9 1 Preservation - Packaging, Methods of Films, Transparent, Flexible, Heat Sealable, for Packaging Applications STANDARDS Federal Fed. Test Method Std. No. 151 Military MIL- STP. 1 O 5 MIL-S
7、TD- I2 9 MIL-STD-130 MIL-STD-143 MIL-STD-831 MIL-STD-889 Metals; Test Methods Sampling Procedures and Tables for Inspection by Attributes Marking for Shipment and Storage Identification Marking of U,S. Military Property Specifications and Standards, Order of Precedence for the Selection of Test Repo
8、rts; Preparation of Disc im il a r Met als Licensed by Information Handling ServicesMIL-P-8258 *z I (Copies of specifications, standards , drawings , and publications required by contractors in connectiqn with specific procurement functions should be obtained from the procuring activity or as direct
9、ed by the contracting officer . ) 2.2 Other publications. The following document forms a part of this specification to the extent specified herein. wise indicated, the issue in effect on date of invitation for bids or request for proposal shall apply. Unless other- NATIONAL BUREAU OF STANDARDS Handb
10、ook H28 Screw - Thread Standards for Federal Services 3. REQUIREkJENTS 3.1 First article. When specified (see 6.2), the con- tractor shall furnish sample units for first article inspection and approval (see 4.3.1 and 6.2). 3.2 Selection of Government documents. Specifications and standards for neces
11、sary commodities and services not specified herein shall be selected in accordance with MIL-STD-143. 3.3 Materials. 3.3.1 Metallic. All metallic parts shall be fabricated from corrosion-resistant metal or shall be suitably treated to resist corrosion. 3.3.2 Nonmetallic. All nonmetallic parts used in
12、 constructing the pumps shall have been manufactured not more than 12 months prior to the date of delivery of the pumps. 3.3.3 Dissimilar metals. Unless suitably protected against electrolytic corrosion, dissimilar metals as specified in MIL-STD-889 shall not be used in intimate contact with each ot
13、her. 3.3.4 Protective treatment. Materials used in the construction of the pump and hose shall be protected against deterioration in a manner that will in no way prevent compliance with the performance requirements of this specification. The use of any protective coating that will crack, chip, or sc
14、ale with age or extremes of climatic and environmental conditions shall be avoided. 3 Licensed by Information Handling ServicesMIL- P-8 25 8 D (AS) 3.4.6 Plunger assembly. The plunger assembly shall consist of a handle, stem, and piston. 3.4.6.1 Handle. The handle shall be approximately 3 inches lon
15、g and 1/2-inch wide and shall be securely fastened to the stem. Screws or rivets, if used for this purpose, shall be countersunk. The edges of the handle shall be rounded and smooth. clearance shall be maintained between the handle and the upper end plate. Not less than a 1-inch I 3.4.6.2 Stern. The
16、 stem shall be constructed of tubing having an outside diameter of not less than 318-inch and sufficient wall thickness to prevent bending if the pump is operated roughly. The stem 3.4 Design and construction. The pump and hose shall Conform to figure 1. The pump shall be so constructed that no part
17、s Will work loose in service. It shall be built to withstand the strains, jars, vibrations, and other conditions incident to shipping, storage, installation and service. 3.4.1 Maintenance. The pump shall be so designed and constructed that the barrel, plunger or check valve may be replaced without s
18、pecial tools or damage to the pump and so that adjustment and repairs can be made readily by the personnel of operating units and , overhaul bases. I 3.4.2 Barrel. The barrel shall be black, paper-based phenolic lamnated tubing, type PBG, conforming to MIL-P-79. 3.4.3 End plates. The pump shall be p
19、rovided with a lower plate incorporating an air outlet and a check valve. The opposite end of the pump shall be provided with an upper plate incorporating an air inlet and a passage for the plunger stem. firmly against the ends of the pump barrel by three rods or 3/8-inch wide bands evenly spaced ar
20、ound the circumference of the barrel. lower end plate shall be sealed against the barrel by means of a synthetic rubber gasket. The plates shall be held The 3.4.4 Air discharge outlet. The air discharge outlet shall consist of an externally threaded outlet for attachment of the pump hose. The outlet
21、 shall project beyond the face of the end plate as shown in figure 1. The inner diameter of the opening through the outlet the pump shall be provided with 13/16-20 UNS-2A threads. c shall be 112 + 1/32, -0 inch. The externally threaded outlet of 3.4.5 Check valve. The check valve shall be of synthet
22、ic rubber or any other suitable material The valve shall seal against a reverse flow of air when the pump is operated. an integral part of the lower end plate or shall be installed in a separate plate adjacent to the lower plate. The check valve shall be 4 Licensed by Information Handling ServicesMI
23、L-P-825D 42 7777706 0231417 2 MIL-P-8258D(AS) shall be expanded between the handle and the stem passage to eliminate the possibility of the piston striking against the lower plate or check valve plate, i provided. around the stem to take up the shock at the end of the return stroke. A short length o
24、f coil spring shall be installed 3.4.6.3 Piston. The piston shall be installed on the stem opposite the handle and shall consist of a cup and at least two washers, one on each side of the cup. The cup shall be of synthetic rubber or of any other suitable material. The cup material shall be self-lubr
25、icating to prevent drying. The washers shall be of such diameter and configuration that the cup will permit the passage of air on the return stroke and a minimum of leakage on the down stroke. *. 3.4.7 Hose. The hose shall be of the woven style with an inner tube of nonblooming compound of seamless
26、construction and an abrasion-resistant outer cover. The hose shall have a 1/2-inch minimum inside diameter and a 1-inch maximum outside diameter. The construction of the hose shall be such that the hose shall not burst or leak during usage. 3.4.7.1 Hose connector. Each hose shall be provided with an
27、 internally threaded connector on one end and an externally threaded connector on the other end as shown in figure 1. The threads on the respective hose connectors shall be as specified in figure 1. The connectors shall be serrated and secured to the hose by means of a ferrule. The connector on the
28、externally threaded end shall be constructed SO as to allow full rotation of the threaded portion (in either direction) for connection to the life raft topping-off valves. 3.5 Threads. Threads shall be in accordance with Handbook II-28. 3.6 Perf ormance. 3.6.1 Operation. The pump shall pass the oper
29、ation test specified in 4.7.1. 3.6.2 Air discharge. The pump shall pass the air discharge tests specified in 4.7.2.1 and 4.7.2.2. 3.6.3 Operating force. The pump shall pass the operating , force test specified in 4.7.3. I specified in 4.7.4. I l 3.6.4 Pump leakage. The pump shall pass the leakage te
30、st 5 Licensed by Information Handling ServicesMIL-P-8258D 42 W 9999906 0231420 9 M - - MIL-P-8258D (AS) * 3.6.5 Impact. The pump shai.1 pass the impact test specified in 4.7.5. 3.6.6 Hose flexibility. The hose shall not crack when tested as specified in 4.7.6. 3.6.7 Hose kinking. The hose shall not
31、kink or show visible deterioration when tested as specified in 4.7.7. 3.6.8 Hose leakage. The hose shall not leak when subjected to an air proof pressure of 25 psi as specified in 4.7.8. 3.6.9 Salt spray. The hose shall pass the salt spray test specified in 4.7.9. 3.7 Weight. The weight of the pump
32、without the hose shall not exceed 1.40 pounds. 3.8 Interchangeability. All parts having the same manufacturers part number shall be functionally and dimensionally interchangeable. 3.9 Identification of product. 3.9.1 Pump. The pump shall be marked for identification in accordance with MIL-STD-130, a
33、nd shall contain the following information in durable and legible markings: PUMP, HAND, AIR , MIL-P-8258 (Revision as applicable) CONTRACT NUMBER OR CONTRACTORS REQUISITION NUMBER MANUFACTURERS NAME SERIAL NUMBER DATE OF MANUFACTURE A pressure sensitive decal or label containing the above informatio
34、n is considered an acceptable substitute. 3.10 Workmanship. Workmanship shall be such as to assure compliance with the requirements of this specification and shall be of good quality. essential that the pump assembly function properly under conditions to which it may be subjected. Because of the eme
35、rgency use of the equipment, it is 7 ,- IL_- -J- I Licensed by Information Handling ServicesMIL-P- 8258D (AS) e 4. QUAtITY ASSUMCE PROVISIONS 4.1 Responsibility for hspection. Unless otherwise specified in the contjract or purchase order, the supplier is responsible for the performance of all inspec
36、tion requirements as Specified herein. Except as otherwise specified, the supplier may utilize his own facilities or any commercial laboratory acceptable to the Government. The Government reserves the right to perform any of the inspections set forth in the specification where such inspections are d
37、eemed necessary to assure supplies and services conform to prescribed requirements. 4.2 Classification of inspections. The examination and testing of the pumps shall be classified as: a. First article inspections (4.3) b. Quality conformance inspections (4.4) 4.3 First article. 4.3.1 First article s
38、amples. Unless otherwise specified, as soon as practicable after award of the contract or order, the manufacturer shall submit three pumps. construction, workmanship, components, and materials to be used during production. pumps from contract to contract, submission of further first article inspecti
39、on samples on the new contract may be waived at the discretion of the procuring activity (see 6.2). Approval of the first article inspection samples or the waiving of the first article inspection does not Preclude the requirements for performing the quality conformance inspection. the Government as
40、directed by the Contracting Officer (see 6,2d). The samples shall be representative of the When a manufacturer is- in continuous production of these O The first article inspection samples shall be furnished to 4.3.2 First article inspection. First article inspection shall consist of performing all e
41、xaminations and tests specified herein. 4.3.3 First article approval. Upon completion of the first article inspection program, recommendations and comments pertinent for use in monitoring production, will be forwarded by the Government Activity responsible for conducting the inspection program (see
42、6.2d) to the Contracting Officer. One approved sample will be returned to the manufacturer for use in monitoring production. The remaining samples will be consumed or destroyed in the first article inspection program and shall not be considered as part of the quantity to be delivered under the contr
43、act. 4.4 Quality conformance inspections. The quality con- formance inspections shall consist of the examinations and tests listed in table i. 7 Licensed by Information Handling ServicesMI L-P- 8 2 5 8 D (AS ) TABLE I. Examinations, tests, sample size and acceptance criteria Acceptance criteria Type
44、 of inspection Major and Minor Major Major Major Test paragraph Zflspeckion Examination of Pumps 4.6.1 Reject all pumps with any major defect and an acceptance quality level of 6.5 defects per hundred units for minor defects. Reject all def ec- tive pumps. Rej ec t all de ec- tive pumps. Every pump
45、for defect and inspection level II for minor defects. L/ Operation 4.7.1 Every pump 4.7.2.1 Every pump Air discharge at 70% Operating orce 4.7.3 Acceptance number zero rejection number one. s-2 y Reject all defec- tive pumps. Pump leakage Major 4.7.4 Every pump 4.7.8 Every hose Rej ect all def ec- t
46、ive hose. Hose leakage - a/ Preparation for delivery Mai or Major 4.6.3 Inspection level s-2 i/ - Total acceptable quality level of 4.0 percent defective. - %/ The sample size shall be based only on the applicable sample size code letter corresponding to the specified inspection level of MIL-STD-105
47、. 4.4.1 Sampling. 4.4.1.1 Inspection lot. 4.4.1.1.1 Pumps. An inspection lot size shall. be expressed %ri units of one pump made essentially under the same conditions and from the same materials and components. The sample unit shall be one pump. 4.4.1.1.2 Preparation for delivery. An inspection lot
48、size shall be expressed in units of one fully prepared shipping container, containing pumps fully prepared for delivery from essentially the 3 I . -._ - I Licensed by Information Handling ServicesMIL-P-825D 92 m 777770b 0233423 LI same materlals and components. container, containing pumps fully prep
49、ared for delivery, except that it need not be sealed. The sample unit shall be one shipping 4.4.1.2 Sampling and acceptance criteria. The sample size and acceptance criteria shall be as specified in table I, as applicable. Sampling and acceptance shall be in accordance with MIL-STD-105. 4.5 Test conditions. Unless otherwise specified, all tests required by this specification shall be made at an atmospheric pressure of 28 to 32 inches of mercury and a temperature of 77 + laF, and a relative humidity of 80 percent or less. Where tests are madewith atmospheric p
