1、MIL-PRF-BLB3bB 9999906 2076021 BOT MIL-PRF-8 1836B 1 October 1998 SUPERSEDING MIL-F-8 1836A(AS) 27 March 1992 PERFORMANCE SPECIFICATION FILTER AND DISPOSABLE ELEMENT, FLUID PRESSURE, HYDRAULIC, 3 MICRON ABSOLUTE, GENERAL SPECIFICATION FOR This specification is approved for use by all Department and
2、Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification covers hydraulic fluid pressure filters and disposable filter elements which retain all particles larger than three microns absolute. 1.2 Classification. Hydraulic filters and elements will be of the following types and cl
3、asses as specified (see 6.2). 1.2.1 Types: Type A - Mechanical indicator Type B - Electrical indicator 1.2.2 Classes: Class 5000 - up to 5,000 psi system operating pre lssure Class 8000 - up to 8,000 psi system operating pressure Beneficial comments (recommendations, additions, deletions) and any pe
4、rtinent data which may be of use in improving this document should be addressed to: Commander, Naval Air Warfare Center Aircraft Division, Code 414 1 OOB 120-3 , Highway 547, Lakehurst, NJ 08733-5 100, by using the Standardization Document Improvement Proposal D Form 1426) appearing at the end of th
5、is document or by letter. AMSC N/A FSC 4920 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-8 1836B 2. APPLICABLE DOCUMENTS 2.1 General. The documents listed in
6、 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 examples. While every effort has been made to ensure the completeness of this list, document us
7、ers are cautioned that they must meet all specified requirements documents cited in sections 3 and 4 of this specification, whether or not they are listed. 2.2 Government documents. 2.2.1 Specifications and standards. The following specifications and standards form a part of this document to the ext
8、ent specified herein. Unless othewise specified, the issues of these documents are those listed in the issue of the Department of Defense Index of Specifications and Standards (DoDISS) and supplement thereto, cited in the solicitation (see 6.2). SPECIFICATIONS DEPARTMENT OF DEFENSE MIL-H-46 170 - Hy
9、draulic Fluid, Rust Inhibited, Fire Resistant, Synthetic Hydrocarbon Base. MIL-Pm-83282 - Hydraulic Fluid, Fire Resistant, Synthetic Hydrocarbon Base, Metric, NATO Code Number H-537. MIL-P-83461/1 - Packing, Preformed, Petroleum Hydraulic Fluid Resistant, Improved Performance at 275 “F (135 “C) High
10、er and Tolerances. Hydrocarbon Base, Aircraft and Missile. MIL-Pm-87257 - Hydraulic Fluid, Fire Resistant, Low Temperature, Synthetic STANDARDS DEPARTMENT OF DEFENSE MIL-STD-8 1 O - Environmental Test Methods and Engineering Guidelines. MS34.52 - Connector, Receptacle, Electric, Box Mounting, Rear R
11、elease, Crimp Contact, AN Type with. (See supplement 1 for list of specification sheets.) 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PM-8 1836B (Unless otherwise indicated, copies of the above specifications and standards are available fro
12、m the Standardization Document Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 191 11-5094.) 2.3 Non-Government publications. The following documents form a part of this document to the extent specified herein. Unless otherwise specified, the issues of the documents, which are DoD adop
13、ted are those listed in the issue of the DoDISS cited in the solicitation. Unless otherwise specified, the issues of documents not listed in the DoDISS are the issues of the documents cited in the solicitation (see 6.2). AMERICAN SOCIETY FOR QUALITY CONTROL (ASQC) ASQC-Z1.4 - Sampling Procedures and
14、 Tables for Inspection by Attributes. OD adopted) (Application for copies should be addressed to the American Society for Quality Control, P.O. Box 3005,611 East Wisconsin Avenue, Milwaukee, WI 53201-4606.) SOCIETY OF AUTOMOTIVE ENGINEERS (SAE) SAE-ARP598 - Liquids, Particulate Contamination in, by
15、the Particle Count Method, in the Determination of (DoD adopted) adopted) adopted) Fluid Systems Components, Impulse Testing of. (DoD adopted) SAE-AS43 95 - Tube Connection, Fitting end-Flared Design Standard. OD SAE-AS47 16 - Gland Design, O-Ring and other Elastomeric Seals. (DoD SAE-ARP1383 - Actu
16、ators, Hydraulic, Valves, Pressure Containers and Similar (Application for copies should be addressed to the Society of Automotive Engineers, 400 Commonwealth Drive, Warrendale PA 15096.) 2.4 Order of precedence. In the event of a conflict between the text of this document and the references cited h
17、erein (except for related specification sheets or MS standards), the text of this document takes precedence. Nothing in this document, however, supersedes applicable laws . and regulations unless a specific exemption has been obtained. 3 Provided by IHSNot for ResaleNo reproduction or networking per
18、mitted without license from IHS-,-,-MIL-PRF-8 1 83 6B 3. REQUIREMENTS 3.1 Specification sheets. The individual item requirements shall be as specified herein and in accordance with the applicable specification sheet. In the event of any conflict between requirements of this specification and the spe
19、cification sheet, the latter shall govern. 3.2 Oualification. The filter and element fimished under this specification shall be products that are authorized by the qualifying activity for listing on the applicable qualified products list before contract award (see 4.2 and 6.3). 3.3 Materials. The co
20、ntractor shall select the materials, but the materials shall be capable of meeting all of the operational and environmental requirements specified herein (see 6.4 and 6.4.1). 3.3.1 Compatibility. The filter and element shall be constructed of materials that are not adversely affected by or affect th
21、e hydraulic fluids and the test fluid specified herein. 3.3.2 Metals. Metals shall be of the corrosion-resistant type or shall be protected to resist corrosion from the environmental conditions (see 3.6.6) encountered in storage and during normal service life. 3.3.2.1 Dissimilar metals. Where dissim
22、ilar metals are used in contact with each other, protection against galvanic corrosion shall be provided (see 6.5). 3.3.3 Nonmetals. 3.3.3.1 Seals. All seals, packing, and back-up-rings shall be those listed in MlL-P-83461/1 and SAE-AS47 16. 3.3.3.2 Fungus resistance. Fungus resistant materials shal
23、l be used. When the fngus resistant materials are not used, the material shall be treated with an anti-fungal agent. 3.3.4 Lubrication. O-rings and back-up-rings shall be lubricated with hydraulic fluid while in service. No additional lubricant shall be required. 3.3.5 Protective treatment. Material
24、s used to protect the filter element against environmental conditions (see 3.6.6) shall not crack, chip, or scale. 3.4 Interface characteristics. 3.4.1 Filter element removal. Filter element removal shall not require disconnecting fittings, mountings, differential pressure indicators, or removing in
25、let or outlet tubing. The filter assembly shall be designed so that fluid entering the filter housing cannot impinge directly upon the element 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-PRF-8 1836B filter medium. The filter assembly shall
26、pass 1,000 hours of operation with the fluid and ambient temperature at 160 “F. 3.4.2 Tvpe of filter assembly. The filter assembly shall be of the full flow type. The flow through the filter element shall be from outside-in. 3.4.3 Interchangeability. The filter bowls, filter heads, and differential
27、pressure indicators shall not be interchangeable if the sizes of filter elements or the operating pressure classes (see 1.2.2) are not the same. 3.4.4 Surface finishes. All sealing surfaces, O-ring grooves including chamfers, and all mating surfaces in contact with O-rings shall conform to the appli
28、cable specification sheet. 3.4.5 Protective cover. The element shall be provided with a permanent woven or perforated cover, or similar device to minimize handling damage of the element. The protective cover shall not interfere with the performance of the element. 3.4.6 Structural inte-ty. The filte
29、r assembly, housing, mounting, and element shall pass all the structural loads imposed by the wrench torque, high operation pressure, and vibrations encountered during shipping, storage, installation, and service. 3.4.7 Handle. A filter housing which weighs more than 20 pounds when filled with fluid
30、 shall be provided with a handle or similar device (see 6.6). 3.4.8 Alignment of ports. The horizontal and vertical axes of inlet and outlet ports of the filter housing shall be aligned with the tubing. 3.4.9 Installed. The configuration of filter assembly shall be such that the filter element canno
31、t be installed in the reversed position. The mounting shall be designed such that the filter assembly can only be installed in the operating position. 3.4.10 Dimensions. The dimensions for the filter assembly and filter element shall be in accordance with the applicable specification sheets. 3.5 Ind
32、icator. 3 .S. 1 Differential pressure indicator. The filter housing shall incorporate an integral device to indicate when the differential pressure across the filter element exceeds the table I actuation pressure for longer than one second. The indicating device shall be mechanical or electrical and
33、 shall conform to the applicable specification sheet. The two types of indicators shall be mechanically interchangeable for any one filter manufacturers assembly. It shall be possible to change the indicating device with ordinary tools while the filter unit is mounted on a bulkhead by 5 Provided by
34、IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-flIL-PRF-BL83bB 99999Ob 207b02b 39L m MIL-PRF-8 1836B its standard mounting bracket. The devices shall be changeable while the system is filled with fluid but not under pressure. The device shall not activate when
35、the filter and fluid temperature is below the table I lockout temperature. Once actuated, the indicator shall continue to indicate until manually reset. The reset device shall be external, readily visible, and easily accessible. 3.5.2 Mechanical indicator. A differential pressure indicator shall pro
36、vide a visual warning by raising a red anodized pin when actuated. For adaptation to night operations, the indicator shall be readily apparent when illuminated by a low intensity red light (two-cell flashlight with red lens). The view of the indicator shall be unobstructed. Once actuated, the indica
37、tor shall remain extended until manually reset. The indicator shall be readily accessible for reset. When the indicator is in the reset position, it shall be hidden from view. 3 S.3 Electrical indicator. An electrical differential pressure indicator shall actuate either a 24 vdc or 1 10 vac electric
38、al signal. To interface with the existing receptacle, the indicator shall accept a MS3452WSlOSL3P connector with pin arrangement as follows: Pin A - normally open Pin B - common Pin C - normally closed The switch current rating shall be five amperes at 110 vac, 28 vdc (resistive) or three amperes at
39、 1 10 vac, 28 vdc (inductive). 3 S.4 Indicator bleed and drain ports. Filter assemblies, sizes 16 and larger, shall include parts to bleed entrapped air and to drain fluid. 3.6 Performance. 3.6.1 Filter assemblv. Filter assembly, housing, and element shall meet the performance requirements in table
40、I and shall pass the qualification tests in table II. 3.6.2 Bubble point. The manufacturer shall determine the initial bubble point occurring in the filter elements. The bubble point shall be correlated against the minimum particle passed. For qualification the initial bubble point value shall meet
41、the value the established by the qualifying activity (see 6.3) and shall be determined as specified in 4.4.2. l. No element shall be accepted without passing the conformance test (see 4.4.2.1.3). 3.6.3 Examination of product. The filter assembly and element shall conform to the requirements of this
42、specification when visually examined. All items, including differential pressure indicators and other accessory components, shall be examined for compliance with the appropriate manufacturers drawings. 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-
43、,-MIL-PRF-8183bB 99999Ob 207b027 228 MIL-Pm-8 1836B TABLE I. Performance reauirements. ITEMS I Absolute rating: I ODerating Dressure I Ooerating: temperature REQUIREMENTS CLASS 5000 1 CLASS 8000 3 micron 8.000 nsi 5-000 mi 3 micron -40 to 160 “F I -40 to 160 “F I Proof pressure I 7,500 psi I 12,000
44、psi Burst pressure Differential pressure indicator actuation pressure Lockout temperature Degree of filtration Pressure drop housing -8,-16 sizes -24 size Differential pressure element For all sizes Dirt holding capacity at 100 psid -8 sizes - 16 sizes -24 sizes Terminal differential messure Impulse
45、 (cycles) 12,500 psi (psid max) (psid mm) 99.5 percent 99.5 percent 100 S; 70 “F 180 psid 105 psid 20,000 psi 10 20 20 10 (psid mm) (psid mm) 20 40 (grams) (grams) 9 76.5 80 40 45 8 100 psid 180 psid 25,000 at 160 “F 25,000 at 160 “F 75,000 at 135 “F 75,000 at 135 “F 3.6.4 Cleanliness. 3.6.4.1 Filte
46、r element. To ensure that the filter elements and housing are being cleaned properly, and to ensure that the parts are not contaminated during packaging, sample filter elements or assemblies shall be unpacked and tested for cleanliness. The filter elements shall be installed in a pre-cleaned housing
47、. The migration test of 4.4.2.9.2 shall be passed except that the weight of contaminant collected shall be not greater than five mg. 3.6.4.2 Fluid. Contamination (see 6.7.1) shall be less than 0.4 mg per 2,000 mL of hydraulic fluid. 3.6.5 Mean-time-to-repair time. The total time to perform all of th
48、e operations listed in 4.4.1.7 three times shall be not greater than 45 minutes. 3.6.6 Environmental conditions. The filter assembly, housing, and element shall operate without leakage, cracking, or failure when subjected to the following environmental conditions: 7 Provided by IHSNot for ResaleNo r
49、eproduction or networking permitted without license from IHS-,-,- - MIL-PRF-BL836B U 9999906 2076028 Lb4 MIL-PRF-8 1 836B 3.6.6.1 Salt fog. The filter assembly without the element shall pass the salt fog test specified in 4.4.1.5.4. 3.6.6.2 Sand and dust. The filter assembly without the element shall pass the sand and dust test specified in 4.4.1.5.5. 3.6.6.3 Fungus. The filter assembly? housing, and element shall pass the h
