1、IINCH-POUND I MIL-PRF-52747F(AT) 26 February 1996 SUPERSEDING MIL-N-52747E (ME) 26 October 1994 MIL-N-53094(ME) 7 February 1990 PERFORMANCE SPECIFICATION NOZZLE ASSEMBLY, CLOSED-CIRCUIT REFUELING, STANDARD AND ARCTIC SERVICE This specification is approved for use by the U.S. Army Tank-automotive and
2、 Armaments Command, Department of the Army, and is available for use by all Departments and Agencies of the Department of Defense. i. SCOPE 1.1 Scope. This specification covers two types of closed-circuit fuel servicing nozzle assemblies. 1.2 Classification. The nozzles will be of the following type
3、s and classes as specified (see 6.2). Type I - Nozzle assembly, closed-circuit refueling, standard service. Class A - Coupling, quick-disconnect. Class B - Coupling, unisex. Type II - Nozzle assembly, closed-circuit refueling, arctic service. Beneficial comments (recommendations, additions, deletion
4、s) 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-EBLUE, Warren, MI 48397-5000, by using the Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this docume
5、nt, or by letter. - AMSC N/A FSC 4930 DISTRIBUT ION STATEMENT A . Approved for public release; distribution is unlimited. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- - MIL-PRF-52747F W 9999906 20l15829 TbL W 2. APPLICABLE DOCUMENTS 2.1 General.
6、The documents listed 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 th
7、is list, document users 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 Governrn ent documents. . The following specifications, standards, 2.2.1 Spec.cat ions. standards. and handbooks . and h
8、andbooks form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those listed in that issue of the Department of Defense Index of Specifications and Standards (DoDISS) and supplements thereto, cited in the solicitation (see 6.2). SPE
9、CIFICATIONS DEPARTMENT OF DEFENSE MIL-T-5624 MIL-C-7024 MIL-T-83133 MIL-C-834 1314 - Turbine Fuel, Aviation, Grades JP-4, Jp-5 and - Calibrating Fluid, Aircraft Fuel System Components. - Turbine Fuel, Aviation, Kerosene Type, Grade JP-8. - Connectors and Assemblies, Electrical, Aircraft Grounding: P
10、lugs, for Types I and II Grounding Assemblies. Grounding: Grounding Clamp Connector for Types I and III Grounding Assemblies, Clip, Electrical. JP-YJP-8ST. MIL-C-83413/7 - Connectors and Assemblies, Electrical, Aircraft STANDARDS DEPARTMENT OF DEFENSE MS27026 MS27029 MS27030 - Coupling Half, Quick D
11、isconnect, Cam-Locking Type, - Coupling Half, Quick Disconnect, Cam-Locking Type, - Gasket, Coupling Half, Quick Disconnect, Cam-Locking. Female, External Pipe Thread, Type VII. Plug. 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- MIL-PRF-5274F 9
12、999906 2015830 783 STANDARDS FEDERAL FED-STD-595 - Colors Used in Government Procurement. (Unless otherwise indicated, copies of the above specifications, standards, and handbooks are available from the Standardization Document Order Desk, 700 Robbins Avenue, Building 4D, Philadelphia, PA 19111-5094
13、.) 2.2.2 Other Go vernmen t docum ents. drawings. a nd mbli cations. The following other Government documents, drawings, and publications form a part of this specification to the extent specified herein. Unless otherwise specified, the issues are those cited in the solicitation. DRAWINGS 13219E0479
14、13219E0486 13219E9808 - Orifice. 13219E9810 13228E1768 - Receiver, Adapter, Closed-Circuit Fuel Servicing. - Nozzle Assembly Envelope, Closed-Circuit Refueling. - Test Fixture, Closed circuit Refueling. - Gasket, Coupling Half, Arctic Service. (Copies of these drawings are available from the U.S. Ar
15、my Tank-automotive and Armaments Command, AMSTA-TR-EBLUE, Warren, MI 48397-5000.) 2.3 Non-Government pub1 ications. The following document(s) form a part of this document to the extent specified herein. Unless otherwise specified, the issues of the documents which are DoD adopted are those listed in
16、 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 NATIONAL STANDARDS INSTITUTE (ANSI) ANSVASME B 1.1 ANSUASME B1.20.1 - Unified Inch Screw Thre
17、ads (DoD Adopted). - Pipe Threads, General Purpose (Inch) (DoD Adopted). (Application for copies should be addressed to the American National Standards Institute, Inc., 1430 Broadway, New York, NY 10018.) 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS
18、-,-,- MIL-PRF-52747F D 9999906 2015631 blT = AMERICAN SOCIETY FOR QUALITY CONTROL (ASQC) ANSUASQC 21.4 - Sampling Procedures and Tables for Inspections by Attributes (DoD Adopted). (Application for copies should be addressed to The American Society for Quality Control, P.O. Box 305,611 East Wisconsi
19、n Avenue, Milwaukee, WI 53201-4606.) AMERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) ASTM D910 ASTM D 1729 - Standard Specification for Aviation Gasolines (DoD - Standard Practice for Visual Evaluation of Color Adopted). Differences of Opaque (DoD Adopted). (Application for copies should be addres
20、sed to American Society for Testing and Materials, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959.) 2.4 Order of precedence. In the event of a conflict between the text of this document and the references cited herein, the text of this document takes precedence. Nothing in this document, ho
21、wever, supersedes applicable laws and regulations unless a specific exemption has been obtained. 3. REQUIREMENTS 3.1 First U. When specified (see 6.2) two or more nozzles shall be subjected to first article inspection in accordance with 4.2. 3.2. Materials. The contractor shall select the materials,
22、 but the materials shall be capable of meeting all of the operational and environmental requirements specified herein (see 4.4.1). Recovered materials should be used to the maximum extent possible provided that the material meets or exceeds the operational and maintenance requirements, and promotes
23、economically advantageous life cycle costs. Material in contact with fuels must be fully compatible with those fuels. Such materials should neither degrade nor be degraded by fuel. Metallic surfaces in continuous contact with hydrocarbon fuels or petroleum products should be free of copper, copper a
24、lloys or cadmium plating. The use of magnesium or any alloy thereof is prohibited. 4 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-1 NIL-PRF-52747F 99999Ob 2035832 55b MIL-PRF-5 2747F(AT) 3.2.1 Material deterioration prevention and control. Each no
25、zzle shall be fabricated from compatible materials, inherently corrosion resistant or treated to provide protection against the various forms of corrosion and deterioration that may be encountered in any of the applicable operation and storage environment to which the nozzle may be exposed. 3.2.2 Th
26、readed parts. All pipe threads shall conform to ANSVASME Bl.20.1 and machine threads shall conform to ANSVASME B1.l. Antiseize tape shall be applied to all male pipe threads prior to assembly (see 4.4.2). 3.2.3 Cleanins. treatment. finish and D rotective coating. The nozzle shall be cleaned, treated
27、 and finished in accordance with the manufacturers standard commercial practice. When required to provide a path for electrical current, protective coatings may be removed locally. Unless otherwise specified (see 6.2) top coat color shall be green 383 (No. 34094 of FED-STD-595). Color matching shall
28、 be in accordance with ASTM D1729 for general color match. Mating surfaces and surfaces in contact with fuel shall not be painted (see 4.4.2). 3.3 Desicn and construction. The closed-circuit refueling nozzle assemblies shall be as specified (see 4.4.2 and 6.2). 3.3.1 Type I nozzle. The Type I nozzle
29、 shall consist of a refueling nozzle as specified herein, equipped with a strainer, a quick-disconnect, automatic shutoff coupler and a class A or B inlet connector. The nozzle shall include ground cable assemblies. 3.3.1.1 Class A inlet connector. The Class A inlet connector shall be a 2-inch femal
30、e cam-locking type quick disconnect coupling half with external pipe threads per MS27026, with a gasket per MS27030 and a plug per MS27029. 3.3.1.2 mss R inlet connecta . The Class B inlet connector shall be a 2-inch, non-valve, unisex adapter with cap, per part number AE70725R or 64019J (see 6.4).
31、e -d 3.3.2 Type II nozzle. The Type II nozzle shall consist of a refueling nozzle as specified herein, equipped with a strainer, a quick-disconnect, automatic shutoff coupler and a 2-inch female cam-locking type quick disconnect coupling half with external pipe threads per MS27026, with a low temper
32、ature gasket conforming to Drawing 13228E1768 and a plug per MS27029. The nozzle shall include ground cable assemblies. 3.3.3 Drawings. The drawings forming a part of this specification are interface drawings. 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license fro
33、m IHS-,-,-MIL-PRF-52 74 7F (AT) I 3.4 Environme ntal. 3.4.1 Ope rating CO nd itiw. The nozzle shall perform as specified herein during or after exposure to the following environments (see 4.4.4.8 thm 4.4.4.14). a. Temperature range: Type I : Type II: -60 to +95“F. -25 to +140“F. b. Relative humidity
34、: Zero to 100 percent. c. Vibration: Vibration incident to service. d. Salt spray: Exposure to salt sea atmosphere. e. Sand and dust: Type I : Type II: Exposure to desert environment. Exposure to dusty arctic environment. f. Shock: No damage when tested as specified in 4.4.4.14. 3.4.2 Storage. 3.4.2
35、.1 Type I nozzle. The nozzle shall not be damaged by storage in any ambient temperature from -50 to +160 degrees Fahrenheit (OF). 3.4.2.2 Type II nozzle. The nozzle shall not be damaged by storage in any ambient temperature from -65 to +145“F. 3.5.1 Maintenance support . Assemblages or support eleme
36、nts shall be adequate to perform the intended function of assisting or conducting maintenance operations. Special hand tools shall be used only when common hand tools cannot be utilized or when they provide significant advantage over common hand tools (see 4.4.4.17). 3.5.2 Scheduledmaintenance . The
37、 time required for the operator to accomplish all scheduled preventative maintenance while wearing clothing appropriate to the operating environment specified shall not exceed 5 minutes daily (see 4.4.4.17). 3.6 Closed-circwt MIL-C-7024, type II; MIL-T-83133, grade JP-8 and ASTM D910 (see 4.4.4.8).
38、3.8 vractemtu. 3.8.1 Dimensions a . The nozzle, including all actuating handles, shall be contained within the envelope shown on Drawing 13219E0486 (see 4.4.2). 3.8.2 MIL-C-7024, type II; MIL-T-83133, grade JP-8 and ASTM D910. The test fluid temperature shall be between +60 and +90“F for type I nozz
39、le and -60 to +90“F for type II nozzle, with the exception of the fuel resistance test 4.4.4.8 through low temperature test 4.4.4.9. The test fluid temperature shall be at ambient temperature for the refueling test 4.4.4.19. All flow rate performance data shall be corrected to a specific gravity of
40、0.78. L 12 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-4.4.4 Tests. Tests shall be performed as specified in table II. 4.4.4.1 Functional test. With the flow control valve closed, apply a pressure of 25 psi to the nozzle inlet. Connect the nozzle
41、 to a closed-circuit fuel servicing adapter, hereinafter referred to as a test adapter, conforming to Drawing 13219E0479. Open the flow control valve initiating flow. Block the test adapter discharge port and check for visual indication that the regulator has shut off flow. Close the flow control va
42、lve and disconnect the nozzle from the test adapter. Open the test adapter discharge port, increase the nozzle inlet pressure to 125 psi and connect the nozzle to the test adapter. Open the flow control valve and adjust flow rate to maintain 125 psi nozzle inlet pressure. Block the test adapter disc
43、harge port and check for visual indicating that the regulator has shut off flow. Close the flow control valve and disconnect the nozzle from the test adapter. Any evidence of leakage during flow conditions, binding, valve chatter, distortion, or requiring excessive operating force shall constitute f
44、ailure of this test (see 3.6). 4.4.4.2 Strength. 4.4.4.2.1 Roof p ressure-oDen . Connect the nozzle to the test adapter with the test adapter discharge port blocked. With the nozzle flow control valve in the open position apply a pressure of 5 psi to the nozzle inlet for a period of not less 1 minut
45、e. Repeat this procedure increasing the nozzle inlet pressure in 25 psi increments until an inlet pressure of 180 psi is reached. Any evidence of leakage or distortion shall constitute failure of this test (see 3.6). 4.4.4.2.2 Proof press Ure-closed . With the nozzle dust cap removed and the flow co
46、ntrol valve in the closed position, pressure shall be applied to the nozzle inlet in accordance with 4.4.4.2.1. If the flow control valve can be put in flow position without connecting the nozzle to an adapter, the test procedure shall be repeated with the flow control valve in the full open positio
47、n. Any evidence of leakage or distortion shall constitute failure of this test (see 3.6). 4.4.4.2.3 Side load. With the nozzle connected to a rigidly mounted test adapter with the discharge port blocked, apply 125 psi pressure to the nozzle inlet. Apply a load to the nozzle inlet to cause a moment o
48、f 100 foot-pounds about the intersection of the nozzle outlet centerline and the locking lug reference plane on the test adapter as shown in figure 2. Actuate the flow control valve from the closed, to the open, to the closed positions. Any evidence of leakage, binding or distortion shall constitute
49、 failure of this test (see 3.8.2). 4.4.4.2.4 Pull test. The dust cap or plug security cable and the grounding cable assemblies shall be connected to the nozzle and subjected to a proof load of 75 pounds. Any breakage shall constitute failure of this test. 4.4.4.3 Regulator. Connect the nozzle to a test fixture conforming to Drawing 13219E9810 (see 3.6.2). 13 Provided by IHSNot for ResaleNo reproduction or networking permitted without license fro
