1、r a3 MIL-R-6244lA 13 999990b 04313Lt7 b MIL-R-82441A (OS) 9 October 1974 Superseding MIL-R-82441 (OS) 10 May 1966 MILITARY SPEC I FICATI ON REGULATOR ASSEMBLY, CARBON DIOXIDE PRESSURE This Specification is approved for use by all Departments And Agencies of the Department of Defense. 1. SCOPE 1.1 Sc
2、ope. This specification covers one type of carbon dioxide pressure regulator assembly referenced herein as the “regulatortt. 2. APPLICABLE DOCUMENTS * 2.1 Applicable documents. The following documents of the issue in effect on date of invitation for bids or request for proposal form a part of this s
3、pecification to the extent specified herein. SPECIFICATIONS Military MIL-P-116 MIL-F-18866 MIL-S-22473 STANDARDS Military MIL-STD-105 MIL-STD-129 Preservation-Packaging, Methods of Fittings, Hydraulic Tube, Flared, 37- Degree And Flareless; Steel Sealing, Locking , .and Retaining Compounds; Single-C
4、omponent Sampling Procedures and Tables for Inspection by Attributes Marking for Shipment and Storage IFSC 13551 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-R-82V41A 13 777770b CIL131348 8 - z MIL-R-82441A(OS) MS-19060 Ms-20995 Ball, Bearing,
5、 Ferrous,Corrosion Resisting Steel Wire, Safety or Lock DRAWINGS Naval Ordnance Sys terns Command DL- 1330653 Regulator Assembly LM- 25 2 6 7 9 9 Test Assembly, Regulator (Copies of specifications, standards, drawings, and publications required by contractors in connection with specific procurement
6、functions should be obtained from the procuring activity or as directed by the contracting officer.) * 2.2 Other publications. The following documents form a part of this speci- fication to the extent specified herein. Unless otherwise indicated, the issues in effect on date-of invitation for bids o
7、r request for proposal shall apply: AEROSPACE INDUSTRIES ASSOCIATION OF AMERICA, INC. NAS 617 Packing, Preformed, Straight Thread Tube BOSS, Synthetic Lubricant Resistant c (Application for copies should be addressed to Aerospace Industries Association of America, Inc. , 1725 DeSales St. N.W. , Wash
8、ington, D.C. 20036) NATIONAL MOTOR FREIGHT TRAFFIC ASSOCIATION, INC. AGENT National Motor Freight Classification (Application for copies should be addressed to American Trucking Associations, ATTN: Tariff Order Section, 1616 P Street, N.W. , Washington; D.C. 20036.) UNIFORM CLASSIFICATION COMMITTEE
9、AGENT Uniform Freight Classification (Application for copies should be addressed to the Uniform Classification Committee, Room 1106, 222 South Riverside Plaza, Chicago, Illinois 60606.) (Technical soc!,ety. and techni.ca1 association specifications and standards are generally wa?.lable for reference
10、 from libraries, among techka1 groups and using Federal Agencies). They are also distributed 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-F MIL-R-2491A-L3 = 9999906 0931349 T I 3. REQUIREMENTS 3.1 Classification of requirements. The requirements
11、 for the regulator are classified herein as follows: REQUIREMENT PARAGRAPH General Requirements Performance Requirements Environmental Requirements Operational Service Life and Product Characteristics 3.2 General reauirements 3.2 3.3 3.4 3.5 3.2.1 Preproduction sample. Unless otherwise specified in
12、the contract or order (see 6.2), a preproductton sample of the regulator is required and shall be manufactured using the methods and procedures proposed for production. purpose of determining that, prior to starting production, the contractors production methods are capable of yielding items that co
13、mply with the technical requirements of the contract (see 4.3.1). The sample shall be tested as specified in Section 4 for the * 3.2.2 Materials. Unless otherwise specified in the contract or order (see 6.21, all materials and treatments of materials and parts used in the manufacture of the regulato
14、r shall.be in accordance with applicable documents listed on DL1330653. 3.2.3 Weight. 3.2.4 Definitions. See 6.3 for definitions of terms. 3.3 Performance requirements and product-characteristics. Unless specified otherwise (see 6.21, the regulators shall satisfy the follow- ing performance requirem
15、ents when tested as specified in Section 4: The weight of the regulator shall not exceed one pound. * 3.3.1. Pressure regulation. The regulator, connected to the Regulator Test Assembly, LM 2526799, shall maintain an outlet pressure between 80 and 130 pounds per square inch, gage (psig) with an inle
16、t pressure from 250 to 2700 psig, with valve “A“ in small orifice position (See Figure IC), * 3.3.2. m. The regulator, connected to theRegulator Test Assembly, LM 2526799, with an applied inlet pressure of 250 I10 psig shall maintain an outlet pressure greater than 40 psig with valve Atii in large o
17、rifice position (See Figure 13. 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-R-82441A 33 W 77777Ob 0433350 b W- MIL-R-8244lA(OS) 3.3.3 Relief valve. The relief valve shall have a cracking pressure I of 200 f25 psig and a reset pressure of 14
18、0 psig minimum. At 140 psig, the valve shall have a maximum leakage rate of 0.5 cubic centimetres per minute %t Standard Test Conditions (cm3/min-Std). 3.3.4 Case leakage. The regulator assembly, in the operating condi- tion, shall show no sign of leakage when tested in accordance with 4.5.3 Ccl . .
19、k 3.3.5 Check valve. The check valve shall have a cracking pressure of 4 +2 psig. nal or reverse flow leakage as detectable by a bubble test. there shall be no reverse flow or external leakage when a pressure of 12 +2 inches of water is applied to the outlet of the check valve. With 300 +25 psig at
20、the outlet there shall be no exter- Similarly, 3.4 Environmental requirements. Unless otherwise specified (see 6.21, the regulator shall be capable of conforming to the performance require- ments and product characteristics of thrs specification after exposure to the following environmental conditio
21、ns (Ready, operating, and non- operating are defined in 6.31 3.4.1 Vibration, ready condition. The regulator, while in the ready condition and mounted as shown in figure 2, shall be capable of meeting the performance requirements of 3.3 after being subjected to the vibra- tions specified in Table I.
22、 minutes each in the longitudinal axis and in the two mutually perpendi- cular transverse axes (see figure 21, at various temperatures within the range of -43 to 60C (-45 to 14O0F (vibration is defined in 6.3.4) (see 4.4.4.2). The regulator shall be vibrated for 180 3.4.2 Acceleration, ready conditi
23、on. The regulator, in the ready con- dition and mounted as shown in Figure 2, shall be capable of meeting the performance requirements of this specification after being subjected to the accelerations specified in Table II. 6.3.5). (Acceleration is defined in TABLE I Vibration Schedule Double Amplitu
24、de (in. +lo%) Minimum -. 0.2 - O. 036 - Acceleration (gs +.lo%) Minimum Frequency (Hz 5 - 22 22 - 40 40 - 74 74 - 500 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-R-8244LA 13 W 9999906 0431351 W % Acceleration Direction (See Figure 2) Magnit
25、ude (gs 310%) 25 Longitudinal axis, Ebd 35 Longitudinal axis, Aft Acceleration Schedule Durat ion 1 minute 1 minute 3.4.3 Shock, ready condition. The regulator, in the ready condition and mounted as shown in Figure 2, shall be capable of meeting the performance requirements of this specification aft
26、er being subjected to the shock loads specified in Table III (Shock is defined in 6.3.6). 3.4.4 Temperature, nonoperating. The regulator, in the nonoperating con- dition, shall be capable of withstanding temperatures between -43 and 6OoC (-45 and 14OOFZ (Temperature is defined in 6.3.7)(see 4.4.4.5)
27、. 3.4.5 Humidity, nonoperating. The regulator, in the nonoperating condition, shall be capable of withstanding an environment of at least 95 percent rela- tive humidity at 43OC (.lOFZ for a minimum of 8 hours (humidity is defined in 6.3.81 (see 4.4.4.5). fi 3.4.6 Temperature , ready , operating. The
28、 regulator, immediately after conditioning for 1 hour at any temperature between -18 and 6OoC (O and 14OoF), shall be capable of meeting. the performance requirements while at any temper- ature between O and 6OoC C32 and 14OOF) (see 4.4.4.6 and 4.4.4.7). 3.5 Operational service life. The regulator s
29、hall have a service life of 200 minutes when tested in accordance with 4.4.4.10. 3.6 Workmanship. grade to ensure satisfactory operation consistent with the requirements of this specification. materials, chips, and loose or spattered foreign materials. workmanship exhibited in any approved preproduc
30、tion sample, subject to any qualification stated in the Governments notice of approval, shall be deter- minative of the requirements of the contract relative to workmanship insofar as not specifically covered by applicable specifications. The workmanship and finish shall be of sufficiently high The
31、assembly shall be thoroughly clean and free of excess The standards of 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- Peak mgni tude (gs +lo%) 300 85 85 45 60 60 60 60 Duration (ms ) 0.5 to 1.5 0.5 to 1.5 0.5 to 1.5 18.0 to 20.0 8.0 to 10.0 8.0 t
32、o 10.0 8.0 to 10.0 8.0 to 10.0 TABLE III , Shock Test Schedule Impact Axis Longitudinal Transverse A Transverse B Longitudinal Longitudfnal Longitudinal Transverse A Transverse B Direction of Decelerat ion Force MIL-R-824YLA 13 W 7747706 0431352 T MIL-R- 82441A (OS ) Aft Optional Optional Fwd Aft Fw
33、d Opt ional Op t iona 1 Number of Impacts 4. QUALITY ASSURANCE PROVISIONS 4.1 Responsibility for inspection. Unless otherwise specified in the contract or.purchase order, the supplier is responsible for the perform- ance of all inspection requirements as specified herein. wise specified in the contr
34、act: or order, the supplier may use his own or any other facilities suitable for the performance of the inspection require- ments specified herein, unless disapproved by the Government. The Govern- ment reserves the right to perform any of the inspections set forth in the specification where such in
35、spections are deemed necessary to assure supplies and services conform to prescribed requirements. Except as other- 4.2 Classification of inspection, Inspection of the regulator shall be classified as follows: (a) Preproduction inspection (see 4.4) (b) Quality conformance inspection(see 4.5) (c) Per
36、iodic production inspection (see 4.6) (d) Examination of first echelon repair parts (see 4.7) 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-3 flIL-R-Zq41A 13 W 7777906 0431353 I MIL-R-82441A (OS) c 4.3 Sampling * 4,3.1 Preproduction inspection sa
37、mple. A preproduction sample of 6 regulators manufactured in accordance with 3.2.1 shall be subjectAd to the preproduction tests, listed in Table IV and detailed in 4.4, at an activ- ity designated by the procuring activity (see 6.2). Failure of a regula- tor to successfully pass any of the tests in
38、 4.4 shall be cause f)r re- jection of the preproduction sample. Further production of the regulator by the supplier, prior to approval of the preproduction sample shall be at the suppliers risk. 4.3.2 Periodic production sample. Periodic production samples shall be randomly selected from units that
39、 have satisfactorily passed the qua- lity conformance inspection of 4,5. These samples shall be subjected to the tests of 4.6 at an activity designated by the procuring activity. (see 6.2j. . Periodic production sampling shall be as follows: Step 1. Upon initiation of production, randomly select 1 u
40、nit from each group of 30 units. from 3 consecutive groups, shift to Step 2. Upon satisfactory compliance of samples selected Step 2. Randomly select 1 unit from each group of 70 units. Con- tinue with Step 2 for the balance of the contract or until a defective unit is found. units on hand shall be
41、withheld and the contractor shall: When a defective unit is found in any group, acceptance of all a. Determine the cause of the defect. b. Take the necessary actions to correct or eliminate the defect from all units on hand and, if so directed by the procuring activity, from those units previously s
42、hipped. c. Submit to the procuring activity for approval, the proposed corrective action to prevent recurrence of the defect. d. Submit to the procuring activity for approval the pro- posed retest program to verify that the corrective action eliminated the defect. Return to Step 1 and proceed as ind
43、icated when inspection is resumed. 4.3.3 Examination of first echelon repair parts. The sampling plans and procedures set forth in MIL-STD-105 shall be used in the determination of acceptability of first echelon repair parts for the regulator as speci- fied in 4.7. 4.4 Preproduction inspection 4.4.1
44、 Tests and examinations. The preproduction sample of 6 regulators shall be inspected in accordance with Table IV, with 2 regulators tested in accordance with each of the 3 test sequences; A, B and c. I .- Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,
45、-,-MIL-R-ZVqLA 13 m 777770b 0431354 3 * MIL-R-8244lA (OS) TABLE IV Preproduction Test Sequence Test I Operational Test Vibration, Ready Condition Acceleration, Ready Condition Shock, Ready Condition Operational Test Temperature and Humidity Low Temperature Operating High Temperature Operating Vibrat
46、ion, Shipping Shock, Shipping Operational Test Operational Service Life Operational Test Paragraph Reference 4.4.4.1 4.4.4.2 4.4.4.3 4.4.4.4 4.4.4.1 4.4.4.5 4.4.4.6 4.4.4.7 4.4.4.8 4.4.4.9 4.4.4.1 4.4.4.10 4.4.4.1 Test Sequence A B C 1 1 1 2 2 3 3 4 4 5 5 6 2 3 4 6 7 5 7 8 6 4.4.2 Test conditions. U
47、nless otherwise specified, (see 6.2) the regu- lator shall be subjected to the preproduction inspection under the follow- ing Conditions: (a) Temperature: Room ambient O to 37OC (32 to 98OF) (b) Altitude: Normal ground atmospheric pressure (c) Vibration: None (d) Humidity: Room ambient 8 Provided by
48、 IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-R-82441A 13 m 994990b 0431355 5 MIL-R- 8 2 4 4 IA (OS ) 4.4.3 Test equipment and setup. In addition to the items listed in 4.5.2, the following test equipment is required: 4.4.3.1 Vibration equipment with temp
49、erature chatnber. The vibration equipment with temperature chamber shall have the following characteristics: (a) Frequency range, logarithmic sweep: 5 to 500 Hertz (Hz) (b) Test specimen: 1 pound (c) Acceleration and displacement (ready condition): 5 to 22 Hz 0.2 inch 22 to 40 Hz 3.0 gravitational units (gs) 40 to 74 Hz 0.036 inch - 74 to 500 Hz 10 g3 (d) Acceleration (packed and packaged) :
