1、INCH-POUND MIL-DTL-62265C(AT) w/AMENDMENT 1 17 December 2003 SUPERSEDING MIL-PRF-62265C(AT) 30 September 1998 DETAIL SPECIFICATION FILTER ELEMENT AND RELIEF VALVE, FLUID PRESSURE, HYDRAULIC (M-60 TANK SERIES) This specification is approved for use by the U.S. Army Tank-automotive and Armaments Comma
2、nd, Department of the Army, and is available for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers the performance and manufacture requirements for a hydraulic filter element and relief valve, disposable type, 3 and 5 micron filtration, h
3、erein referred to as the assembly. 1.2 Classification. Assemblies will be of the following assembly part numbers (see 6.2): 12257235 - 5 microns filtration, 10 gallons per minute flow rate. 12270316-1 - 3 microns filtration, 12 gallons per minute flow rate. 12270316-2 - 3 microns filtration, 3 gallo
4、ns per minute flow rate. Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this document should be addressed to: U.S. Army Tank-automotive and Armaments Command, ATTN: AMSTA-TR-E/BLUE, Warren, MI 48397-5000, by using the Standardizati
5、on Document Improvement Proposal (DD Form 1426) appearing at the end of this document, or by letter. AMSC N/A FSC 4820 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-M
6、IL-DTL-62265C(AT) w/AMENDMENT 1 2 2. APPLICABLE DOCUMENTS 2.1 General. The documents listed in this section are specified in sections 3 and 4 of this specification. This section does not include documents cited in other sections of this specification or recommended for additional information or as e
7、xamples. While every effort has been made to ensure the completeness of this list, document users are cautioned that they must meet all specified requirement documents cited in sections 3 and 4 of this specification, whether or not they are listed. 2.2 Government documents. 2.2.1 Specifications, sta
8、ndards, and handbooks. The following specifications, standards, and handbooks form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those listed in the issue of the Department of Defense Index of Specifications and Standards (DoDIS
9、S) and supplement thereto, cited in the solicitation (see 6.2). SPECIFICATIONS DEPARTMENT OF DEFENSE MIL-H-46170 - Hydraulic Fluid, Rust Inhibited, Fire Resistant, Synthetic - Hydrocarbon Base. MIL-STD-810 - Environmental Test Methods. (Unless otherwise indicated, copies of the above specifications,
10、 standards, and handbooks are available from the Standardization Document Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 19111-5094.) 2.2.2 Other Government documents, drawings, and publications. The following other Government documents, drawings, and publications form a part of this
11、document to the extent specified herein. Unless otherwise specified, the issues are those cited in the solicitation. NUCLEAR REGULATORY COMMISSION (NRC) Code of Federal Regulations (CFR) - Title 10, Parts 30 and 40. (Copies of the Code of Federal Regulations (CFR) are available from the Superintende
12、nt of Documents, U.S. Government Printing Office, Washington, DC 20402.) Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-62265C(AT) w/AMENDMENT 1 3 DRAWINGS ARMY 12257235 - Filter Element and Relief Valve Assembly. 12270316 - Filter Element a
13、nd Relief Valve Assembly. (Copies of these drawings are available from the U.S. Army Tank-automotive and Armaments Command, ATTN: AMSTA-TR-E/BLUE, Warren, MI 48397-5000.) 2.3 Order of precedence. In the event of a conflict between the text of this document and the references cited herein, the text o
14、f this document takes precedence. Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained. 3. REQUIREMENTS 3.1 First article. When specified (see 6.2), a sample shall be subjected to first article inspection in accordance with 4.2.
15、3.2 Materials. Materials used shall be in accordance with the manufacturers materials specifications for hydraulic valves. The materials shall be capable of meeting all the operational and environmental requirements specified herein (see 4.8). Recovered materials shall be used to the maximum extent
16、practicable. 3.2.1 Metals. All metals used in the construction of the assembly shall be corrosion-resistant or shall be adequately protected to resist corrosion during the normal service life of the filter element (see 4.8). 3.2.2 Dissimilar metals. The use of dissimilar metals in contact with each
17、other shall be avoided. Where contact between dissimilar metals is unavoidable, they shall be suitable protected against electrolytic corrosion (see 4.8). 3.2.3 Filter element material. The material of the filter element shall not change the composition of the hydraulic fluid MIL-H-46170, nor shall
18、the material be altered enough to use or storage to affect the intended function of the filter element (see 4.8). 3.2.4 Hazardous materials. Asbestos, cadmium, and radioactive material shall not be used in this item. Radioactive material is defined by CFR, Title 10, Parts 30 and 40, and other radioa
19、ctive material in which the specific activity is greater than 0.002 microcuries per gram or the activity per item equals or exceeds 0.01 microcuries (see 4.8). Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-62265C(AT) w/AMENDMENT 1 4 3.3 Des
20、ign and construction. Assembly shall conform to Drawing 12257235 or 12270316, as specified (see 6.2), and other applicable drawings, specifications, and standards. Parts shall be interchangeable as to fit, form, and function with all other units bearing same part number. Assembly shall be interchang
21、eable with accepted assemblies and with current mountings (see 4.7). 3.3.1 Relief valve. The assembly shall incorporate a permanently installed, nonadjustable, by-pass relief valve capable of performance specified in 3.4.9 (see 4.9.9). 3.3.2 Flow direction. Flow through the element shall be from the
22、 outside in as verified during testing (see 4.9.4 through 4.9.9). 3.4 Operating requirements. 3.4.1 Bubble point. There shall be no bubbles visible when the filter element is pressurized to 0.1 inch (in.) of water less than the minimum bubble point determined during preproduction testing (see 4.9.1)
23、. 3.4.2 Filtration. The filter element shall remove 97 to 99 percent by weight of all contaminants as specified in table I (see 4.9.2). TABLE I. Contaminants filtration. Assembly Characteristic 12257235 12270316-1 12270316-2 Filtration () 1/ 5 3 3 Flow rate (gal/min) 2/ 10 12 3 Pressure drop (psid)
24、3/ 6 12 10 1/ = micron 2/ gal/min = gallon per minute 3/ psid = pound per square inch differential 3.4.3 Flow rate. The rated flow capacity of the filter element shall be as specified in table I (see 4.9.3). 3.4.4 Pressure drop. The pressure drop across the clean filter element shall not exceed the
25、amount specified in table I at flow rate specified (see 4.9.4). 3.4.5 Dirt capacity. The filter element shall hold the specified amount of AC Fine Test Dust without exceeding the differential pressure as specified in table II at flow rate specified in 3.4.3 (see 4.9.5). Provided by IHSNot for Resale
26、No reproduction or networking permitted without license from IHS-,-,-MIL-DTL-62265C(AT) w/AMENDMENT 1 5 TABLE II. Dirt capacity. Assembly Incremental additions of contaminant gram (g) Minimum capacity (g) Maximum differential pressure (psid)12257235 2.5 20.0 100 12270316-1 1.2 4.8 45 12270316-2 0.6
27、2.6 45 3.4.6 Efficiency. The assembly shall remove 97 percent, by weight, of contaminant from a mixture of 2000 mL of clean hydraulic fluid MIL-H-46170 or commercial equivalent (less than 0.0004 g of contaminant per 2000 mL of fluid), and a 5 mL slurry in accordance with table III (see 4.9.6). TABLE
28、 III. Slurry mixture. Assembly A/C fine test dust (g) APM F-9 beads (g) 12257235 0.15 0.15 12270316-1 0.25 0.25 12270316-2 0.15 0.15 The efficiency shall be determined by the following formula: Efficiency = A-(B-C) x 100 A Where: A = (Add value) = Amount of test contaminant passed through system whe
29、n there is no filter element in the filter housing. B = (Contaminant value) = Amount of test contaminant passed through the test filter assembly with the filter element installed. C = (Blank value) = Amount of contaminant attributed to the test system and test filter assembly when no contaminant has
30、 been added. This amount shall be less than 0.0007 g. 3.4.7 Collapse pressure. The filter element shall withstand the minimum differential pressure, at flow rate specified in table IV without inward structural failure or filter medial failure. The differential pressure shall be obtained by adding AC
31、 Fine Test Dust to the test system Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-62265C(AT) w/AMENDMENT 1 6 while maintaining flow rate. The bubble point shall not be below the minimum established during preproduction or initial production
32、testing (see 4.9.7). TABLE IV. Collapse pressure. Assembly Differential pressure (pounds per square inch) (psi) Rated flow (gal/min) 12257235 250 10 12270316-1 150 12 12270316-2 150 3 3.4.8 Flow fatigue. The filter element shall be capable of withstanding flow fatigue cycling specified in table V wi
33、thout evidence of structural failure. The bubble point shall not be less than the minimum value established during preproduction or initial production testing (see 4.9.8). TABLE V. Flow fatigue. Pressure drop (pounds per square inch gage) (psig) Number cycles 12257235 12270316-1, -2 225 000 20 20 22
34、 500 50 50 2 000 100 75 500 150 100 3.4.9 Relief valve performance. 3.4.9.1 Cracking pressure. The relief valve shall crack at the differential pressure specified in table VI. Cracking pressure is defined as that pressure at which leakage through the valve exceeds that specified in table VI (see 4.9
35、.9.1). TABLE VI. Relief valve. Flow capacity Cracking Reseat Assembly Rate (gal/min) Differentialpressure (psi) Differentialpressure (psi) Leakage cubic centimeters per min (cm2/min) Differential pressure (psi) Leakage (cm2/min) 12257235 15.5 190 125 25 16 60 8 12270316-1 18 120 50 5 4 30 2 12270316
36、-2 4.5 120 50 5 4 30 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-62265C(AT) w/AMENDMENT 1 7 3.4.9.2 Flow capacity. With the flow specified in table VI through the relief valve, the differential pressure across the relief valve shall not
37、 exceed the pressure specified in table IV (see 4.9.9.2). 3.4.9.3 Reseat pressure. The relief valve shall reseat at the differential pressure as specified in table VI. Reseat pressure is defined as that pressure at which leakage through the valve does not exceed the amount specified in table VI (see
38、 4.9.9.3). 3.4.9.4 Endurance. The relief valve shall be capable of withstanding 2000 cycles of opening and closing the valve from zero to the flow capacity specified in table VI (see 4.9.9.4). 3.5 Interface requirements. 3.5.1 Dimensional constraints. Dimensional constraints of the assembly shall be
39、 as specified on Drawing 12257235 or 12270316, and drawings referenced therein (see 4.10.1). 3.5.2 Weight. The weight of the assembly shall not exceed 1.5 pounds (lb) (see Drawing 12257235) or 0.8 lb (see Drawing 12270316) (see 4.10.2). 3.6 Support and ownership requirements. 3.6.1 Identification ma
40、rking. Identification marking shall be permanent and legible and shall include, as a minimum, the manufacturers name and part number, the part or identifying number (PIN) and the National Stock Number (NSN). Special markings, if any (see 6.2), shall be as specified (see 4.11.1). 3.6.2 Workmanship. T
41、he assembly shall be free of defects detrimental to its intended use and service life (see 4.11.2). 3.7 Environmental requirements. The assembly shall meet the requirements of 3.4 after being subjected to the environmental conditions specified below. 3.7.1 Temperature. The assembly shall be capable
42、of operating at rated flow over the temperature range of -65F to +275F, and shall not be damaged when subjected to storage conditions of -65F. In addition, the assembly shall be capable of withstanding 10 flow cycles of cold start at -65F. The bubble point shall not be less than the minimum value es
43、tablished during first article testing (see 4.12.1). 3.7.2 Vibration. The assembly shall be capable of withstanding the vibration profile per figure 1 for a period of 80 minutes (including up to 4 resonance dwells of 13-1/3 minutes each) in each direction of the 3 mutually perpendicular axes. The fi
44、lter element media migration shall not exceed 0.004 g (see 4.12.2). Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-62265C(AT) w/AMENDMENT 1 8 INPUT ACCELERATIONLEVEL-gsFREQUENCY, Hz10 100 500.5g1g1.5g2g3g0.5 in. D.A.9.9 Hz 180 HzFIGURE 1. Vi
45、bration profile. 3.7.3 Shock. The assembly shall be capable of withstanding exposure to three half sine wave shock pulses of 40 4 g for a duration of 18 3 milliseconds (ms) applied in both directions along three mutually perpendicular axes (see 4.12.3). 4. VERIFICATION 4.1 Classification of inspecti
46、ons. The inspection requirements specified herein are classified as follows: a. First article inspection (see 4.2). b. Conformance inspections (see 4.3). Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-62265C(AT) w/AMENDMENT 1 9 4.2 First art
47、icle inspection. Unless otherwise specified (see 6.2), first article inspection shall be performed on preproduction or initial production samples as specified when a first article sample is required (see 3.1). This inspection shall include the examinations of 4.5 and 4.6.2 and the tests of 4.9.1.1 t
48、hrough 4.12.3 (see table VII). TABLE VII. Classification of inspections. First article Require- Preproduction Initial Production Conform- Examin- Title ment Method 1 2 3 4 1 2 3 4 ance ation Materials 3.2 4.8 X X X XXXX Metals 3.2.1 4.8 Dissimilar metals 3.2.2 4.8 Filter element material 3.2.3 4.8 H
49、azardous materials 3.2.4 4.8 Design and construction 3.3 4.7 Relief valve 3.3.1 4.9.9 Flow direction 3.3.2 4.9.4 thru 4.9.9 Operating requirements 3.4 Bubble point 3.4.1 4.9.1 Bubble point - alcohol 3.4.1 4.9.1.1 X X X XXXXX Bubble point - hydraulic fluid 3.4.1 4.9.1.2 X X X XXXXX Bubble point - alcohol 3.4.1 4.9.1.3 X X X Filtration 3.4.2 4.9.2 X X F
