1、I MIL-C-B377bA 44 7979706 0223373 O W E-/Q -I/ I INCH-POUND I MIL-C-83996A (USAF) 17JULY 1989 SUPERSEDING 20 JUNE 1979 MIL-C-83996 (USAF) MILITARY SPECIFICATION CARTRIDGE, DESICCANT This specification is approved for use within the Department of the Air Force and is available for use by all Departme
2、nts and Agencies of the Department of Defense. 1. SCOPE. 1.1 tems. ScoQe, This specification covers one type of desiccant cartridge for use in airborne pneumatic sys- 2. APPLICABLE DOCUMENTS. 2.1 Government docu ments, 2.1.1 SQec ifications and Sta ndards, The following specifications and standards
3、form a part of this specifi- cation to the extent specified herein. Unless otherwise specified, the issues of these documents shall be those listed in the issue of the Department of Defense Index of Specifications and Standards (DODISS) and supplement thereto, cited in the solicitation. SPECIFICATIO
4、NS MILITARY DOD-D-1000. MIL-D-37 16 MIL-G-55 14 Drawings, Engineering, and Associated Lists Desiccants, Activated for Dynamic Dehumidification Gland Design; Packings, Hydraulic, General Requirements For STANDARDS MILITARY MS -2 8 7 75 MIL-STD-105 MIL-STD-143 MIL-STD-810 Environmental Test Methods Pa
5、cking,Preformed, Hydraulic, Plus 275“F, (O-ring) Sampling Procedures and Tables for Inspection by Attributes Specifications and Standards, Order of Precedence for the Selection of I (Copies of specifications, standards, handbooks, drawings, publications, and other Government documents required by co
6、ntractors in connection with specific acquisition functions should be obtained from the contracting activity or as directed by the contracting activity.) Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addres
7、sed to: WR-ALCLMMIRBC, Robins AFB, GA 31098-5609 by using the self-addressed Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter. AMSC NIA FSC 44401 DISTRIBUTION STATEMENT A: Approved for public release; distribution is unlimited. THIS DOCU
8、MENT CONTAINS f PAGES. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-C-377bA 4q M 777770b 0223374 2 m MIL-C-83996A (USAFI I 2.3 Qrder of Drecede nce. In the event of a conflict between the text of this specification and the refer- ences cited h
9、erein (except for associated detail specifications, specification sheets or MS standards), the text of this specification shall take precedence. Nothing in this specification, however, shall supersede applicable laws and regulations unless a specific exemption has been obtained. 3. REQUIREMENTS. 3.1
10、 PreDroduction, This specification makes provisions for preproduction testing. 3.2 Componenk The cartridge shall consist of the following major components: t: Slight movement or rattling of the desiccant shall not be cause for rejection. 4.7.6 Shock test, The cartridge shall be subjected to the shoc
11、k test as described in Procedure I, method 516, of MIL-STD-810. 4.7.7 of MIL-STD-810, with final test in vertical plane with outlet Udown.n Vibration te& The cartridge shall be subjected to a vibration test in accordance with Procedure IA 4.7.8 Performance test, 4.7.8.1 accept the cartridge and a 2
12、cfm source of 3,000 psig oil-free air, a saturator, a dew point meter, and air flow measuring apparatus, The dew point meter shall be accurate to within f5“ F and verification of the accuracy shall be furnished. ADDaratuc. Apparatus for this test shall consist of a pressure vessel functionally desig
13、ned to The test shall consist of a continuous run until the dew point of the air leaving the 4.7.8.2 Gond ikons. cartridge reaches +40 F at 300 psig (approximately -20“ F at O psig) or until a minimum of 75 standard (70“ F and 760 mm Hg) cubic feet of air has been through the cartridge. The cartridg
14、e shall be weighed to an accuracy of f0.2 grams immediately before and after each test run. 4.7.8.3 pressure not greater than 300 psig. The saturated air shall then be passed through the sample cartridge at the above specified temperature and pressure and at the rate of 1.2 scfm. The dew point and q
15、uantity of flow shall be measured. The flow rate shall be constant to within fl percent. TA The air shall be saturated with water vapor at a temperature of not less than 130“ F and a 4.7.8.3.1 &corded &L The following readings shall be taken at intervals of not less than 2 minutes during the test ru
16、n: a. Saturator temperature and pressure b. Temperature at inlet of cartridge c. Dew point of air leaving cartridge d. Rate of flow through cartridge e. Total flow through cartridge (cumulative) 4.7.8.3.2 equivalent to a dew point of -65“ F at O psig before a total flow of 75 standard (70“ F and 760
17、 mm Hg) cubic feet or the cartridge shall be considered to have failed the test. The total moisture content of the air leaving the cartridge shall not exceed that 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A _- - - MIL-C-8377bA qLt 777770b 022
18、3380 8 MIL-C-83996A (USm 4.7.9 the cartridge mounted in a vertical position with the outlet end down and with a back pressure (input end of cartridge) of 15 psig shall be 2.0 scfm. Flow test, Upon completion of the tests of 4.7.6,4.7.7 and 4.7.8,the minimum flow of air through 4.7.10 i shall be exam
19、ined to determine that the filters have remained in place and that no by-pass of desiccant particles has occurred. NOTE: It may be necessary to dissect the cartridge and examine it internally to determine the above. Particular attention shall be paid to the output end of the cartridge downstream of
20、the final filter to determine if desiccant particles have migrated around the filter media. Upon completion of the tests of 4.7.6,4.7.7 and 4.7.8, the cartridge 4.8 ing, and packing shall be in accordance with the instructions of Section 5 herein. InsDection of the D reservation. Dackam ng, and Dack
21、 inc, The inspection of the preservation, packag- 5. PREPARATION FOR DELIVERY. 5.1 purchase order. Preservat ion and Dackahp, Preservation and packaging shall be as specified in the contract or 6. NOTES. (This section contains information of a general or expanatory nature that may be helpful, but is
22、 not mandatory.) 6.1 pressure air in airborne pneumatic systems. Intended = The cartridge covered by this specification is intended for use in dehydrating high- 6.2 dicate where changes (additions, modifications, corrections, deletions) from the previous issue were made. This was done as a convenien
23、ce only and the Government assumes no liability whatsoever for any inaccura- cies in these notations, Bidders and contractors are cautioned to evaluate therequirements of this document based on the entire content irrespective of the marginal notations and relationship to the last previous issue. Cha
24、w D revious issue The margins of this specification are marked with vertical lines to in- rm (Key Word) li stinp, Desiccant Filtration Moisture removal Custodian: Air Force - 99 Preparing activity: Air Force - 84 Project No: 4440-F057 8 *US. GOVERNMENT PRINTING OFFICE: 1989 - 6M433lU116 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
