1、MIL-F-ZOb27B (3) 27 7779706 OL7Lb2 W E E MIL-F-20627B AMENDENT 3 19 December 1983 SUPERSEDING -1 AMENDMENT 2 12 February 1976 .MILITARY SPECIFICATION FILTER ASSEMBLY AND FILTER ELEMENTS, FLUID PRESSURE (FOR ENGINES WITH LIQUID FUEL INJECTION SYSTEMS) This amendment forms a part of Military Specifica
2、tion MIL-F-20627B dated 30 October 1962, and is approved for use by all Departments and Agencies of the Department of.Defense. PAGE 1 * 2.1, under *SPECIFICATIONS, MILITARY“: Delete reference to “MIL-F-16884“ and add: “MIL-C-7024 - Calibrating Fluid, Aircraft Fuel System Coiponente.“ 2 . 1, under “S
3、TANDARDS, MILITARY“ : Add : “MIL-STD-414 - Sampling Procedures and Tables for Inspection By Vari- ables for Percent Defective.“ PAGE 2 3.2.1.5: Add: “The filter case center tube shall include a device that will positively locate the installed element concentric with the filter case within plus or mi
4、nus 0.125 inch. nent, non-removable part of the filter and shall be of such a design and haye sufficient ciearance that the filter element will not be damaged vhen installed over the filter.case center tube nor interfere with element operation.“ This centeririg device shall be made a perma- PAGE 3 3
5、.3.3: Delete and substitute: “3.3.3 Differential pressure (element). When tested in accordance with 4.5.5, the elements shall be capable of withstanding a differential gage pres- sure of 100 lb/in2 without evidence of permanent deformation or other damage.“ 1 of 3 FSC 2910 Provided by IHSNot for Res
6、aleNo reproduction or networking permitted without license from IHS-,-,-MIL-F-20627B (3) 27 77777Ob OL7LBb3 b M MIL-F- 20 6 2 7 B AMENDMENT 3 * 4.2(b) and (1): Delete and substitute: “(b) Calibration test fluid. Calibration test fluids required in the test methods shall conform to the following: (1)
7、 Calibration fluid fuel oil in accordance with MIL-C-7024.“ PAGE 4 4.4.2.3: Delete and substitute: “4.4.2.3 Sampling for tegts. Sample filter elements shall be selected from each lot in accordance with MIL-STD-414 at inspection level II as speci- fied in 4.5.3 and at inspectiw level I as specified i
8、n 4.5.4. these tests, the AQL shall be me percent defective. Preparation procedures as specified for media migratbn tests are not applicable to sampling tests. If so elected by the manufacturer, filter elements shall be batch or pot tested, that is, any number of elements may be inatalled in a multi
9、ple element filter vessel and tested simultaneously.“ For each of PAGE 5 Add as paragraph 4.5.4.2.1: “4.5.4.2.1 Alternate method of contaminant feed. Solids contaminant may be added as a slurry, consisting of 4 gm AC Fine Dust and approximately 100 mL of test fuel. minute intervals until a minimum o
10、f 200 grams of contaminant has been added.“ B The slurry shall be introduced ahead of the Moyno pump at 5 PAGE 8 * 6.3 and 6.4: Delete and substitute 6.3 and 6.3.1: “6.3 With respect to products requiring qualification, awards will be made only for products which are, at the time set for opening of
11、bids, qualified for inclusion in Qualified Products List QPL-20627 whether or not such products have actually been so listed by that date. The attention of the contractors is called to these requirements, and manufacturers are urged to arrange to have the products that they propose to offer to the F
12、ederal Government tested for quali- fication in order that they may be eligible to be awarded contracts or purchase orders for the products covered by this specification. for the Qualified Products List is the Naval Sea Systems Command, Department of the Navy, Washington, DC 20362 and information pe
13、rtaining to qualification of products may be obtained from that activity. tests shall be made in accordance with “Provisions Governing Qualification SD-6“ (see 6.3.1). The activity responsible Application for Qualification 6.3 . 1 Copies of “Provisions Governing Qualification SD-6“ may be obtained u
14、pon application to Commanding Officer, Naval Publications and Forms Center, 5801 Tabor Avenue, Philadelphia, PA 19120.“ 2 ci Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-F-20b278 (3) 27 9 7777906 OL7Lb4 9 MIL-F-20627B AMENDMENT 3 LAST PAGE * S
15、pecification Analysis Sheet: Delete and substitute address: “COMMANDER NAVAL SEA SYSTEMS COMMAND (SEA 5523) DEPARTMENT OF THE NAVY WASHINGTON, DC 20362“ The margins of this amendment are marked with an asterisk to indicate where changes (additions, modifications, corrections, deletions) from the pre
16、vious amendment were made. This was done as a convenience only and the Government assumes no liability whatsoever for any inaccuracies in these notations. Bidders and contractors are cautioned.to evaluate the requirements of this document based on the entire content irrespective of the marginal nota
17、tions and relationship to the last previous amendment Custodians: Army - AR Navy - SH Air Force - 99 Review activities: Navy - YD Air Force - 82 DLA - CS User activities: Navy - MC Army-ME 3 Preparing activity: Navy - SH ( Pro j ect 29 .lo-O 17 3) Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
