1、 Beneficial comments, recommendations, additions, deletions, clarifications, etc. and any data that may improve this document should be sent to DAMI_STANDARDIZATIONconus.army.mil or U.S. Army RDECOM, Tank Automotive Research, Development and Engineering Center, ATTN: RDTA-EN/STND/TRANS MS #268, 6501
2、 E. 11 Mile Road, Warren, MI 48397-5000. Since contact information can change, you may want to verify the currency of this address information using the ASSIST Online database at https:/assist.daps.dla.mil. AMSC N/A FSC 4730 METRIC A-A-52598A April 19, 2010 SUPERSEDING A-A-52598 March 14, 1996 COMME
3、RCIAL ITEM DESCRIPTION COUPLINGS, CLAMP, PIPE; WITH BOLTS AND SYNTHETIC-RUBBER GASKETS FOR GROOVED-END PIPE The General Services Administration has authorized the use of this commercial item description (CID) for all federal agencies. 1. SCOPE 1.1 Scope. This CID covers clamp-type couplings, with bo
4、lts and gaskets, for grooved-end pipe, used with fuels. 2. CLASSIFICATION. Couplings (including gaskets) and gaskets for use with petroleum fuel shall be of the following classes and sizes (see 7.1 and 7.3): 2.1 Class (coupling or gasket). The coupling or gasket shall be of the following classes: a.
5、 Aluminum (including gasket) b. Malleable iron, ductile iron, or steel (including gasket) c. Gasket only 2.2 Size. The coupling or gasket shall be of the following sizes: Outside diameter in millimeters (mm) NPS (Nominal Pipe Size) designator 26.7 (3/4) Provided by IHSNot for ResaleNo reproduction o
6、r networking permitted without license from IHS-,-,-A-A-52598A 2 33.4 (1) 42.2 (1-1/4) 48.3 (1-1/2) 60.3 (2) 73.0 (2-1/2) 88.9 (3) 101.6 (3-1/2) 114.3 (4) 141.3 (5) 168.3 (6) 219.1 (8) 273.0 (10) 323.8 (12) 355.6 (14) 3. SALIENT CHARACTERISTICS 3.1 Description. The coupling for joining two pieces of
7、 pipe or pipe fittings shall consist of a two-piece semicircular housing, a synthetic rubber gasket of pressure responsive design, and nuts and bolts, or other type of fasteners to secure the two halves together. 3.2 Materials. Unless otherwise specified herein, materials shall be in accordance with
8、 the manufacturers specifications. The use of recovered material made in compliance with regulatory requirements is acceptable providing all the requirements of the CID are met (see 4.1). 3.2.1 Class A - Aluminum housing. Aluminum permanent mold castings shall conform to ASTM B108/ B108M, alloy 356.
9、0 (UNS A03560) in T6 temper. Aluminum sand castings shall conform to ASTM B26/ B26M, alloy 356.0 (UNS A03560) in T6 temper. Aluminum forgings shall conform to ASTM B247 alloy number 6061 in T6 temper. 3.2.2 Class B - Malleable iron, ductile iron, and steel housing. Malleable iron castings shall conf
10、orm to ASTM A47/ A47M, grade 35018 or grade 32510. Ductile (nodular) iron castings shall conform to ASTM A536, grade 65-45-12. Steel castings shall conform to ASTM A27/ A27M, grade 65-35. 3.2.3 Material deterioration prevention and control. The couplings shall be fabricated from compatible materials
11、, 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 operating and storage environments to which the couplings may be exposed. 3.2.3.1 Identification of materials and finishes. The
12、contractor shall identify the specific material, material finish or treatment for use with components and subcomponents, and shall make information available upon request to the contracting officer or designated representative. Provided by IHSNot for ResaleNo reproduction or networking permitted wit
13、hout license from IHS-,-,-A-A-52598A 3 3.3 Coupling housing. Coupling housings shall be bolted over grooved-end pipe sections. The coupling shall provide an all-around grip on the grooved-end pipe with positive flexible locking action. The amount of flexibility on cut grooved pipe (see figure 1) sha
14、ll be in accordance with table I. On roll grooved pipe, the deflection shall be half these values. The coupling housing shall be designed such that it does not pinch the gasket. Bolts for joining the coupling halves shall be zinc plated steel (see 3.5.1). TABLE I. Coupling flexibility. Outside Diame
15、ter mm (NPS designator) Flexibility (Cut Grooved Pipe) Minimum Degrees - Minutes Maximum Degrees - Minutes 26.7 (3/4) 240 70 33.4 (1) 210 545 42.2 (1-1/4) 110 435 48.3 (1-1/2) 10 40 60.3 (2) 155 315 73.0 (2-1/2) 116 245 88.9 (3) 13 215 101.6 (3-1/2) 054 242 114.3 (4) 212 325 141.3 (5) 210 225 168.3
16、(6) 121 225 219.1 (8) 13 155 273.0 (10) 50 135 323.8 (12) 42 125 355.6 (14) 38 115 3.4 Gasket. The gasket shall be made from nitrile rubber and shall be compatible for use with fuels such as diesel fuels and jet fuels. Gaskets shall perform satisfactorily at all temperatures from minus (-) 29 degree
17、s Celsius (C) -20 degrees Fahrenheit (F) to plus (+) 70 C (+158 F). The gasket shall be made from injection-molded or compression-molded synthetic rubber. Gasket size shall be identified with the outside diameter. Physical properties of the gasket shall meet or exceed the requirements shown in table
18、 II. 3.5 Fasteners. 3.5.1 Bolts and nuts. The bolts shall conform to ASME B18.10, ASTM A183, grade 2 or ASTM A193/ A193M, grade B7. Nuts shall conform to ASTM A194/ A194M, grade 2H, heavy hex zinc type. Both bolts and nuts shall be zinc plated in accordance with ASTM B633, Fe/Zn-12. Provided by IHSN
19、ot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-52598A 4 TABLE II. Physical requirements of the gasket. Description of Properties Requirements ASTM Test Methods Original Properties Tensile strength kilopascals (minimum) 10350 D412 Ultimate elongation (% minimum)
20、 300 D412 Hardness, shore A durometer, points 60 +15 D2240 -10 After Oven Aging for 22 Hours at 70 C (158 F) Tensile retained (% minimum) 80 D573 Elongation retained (% minimum) 80 D573 Hardness change, shore A, points (maximum) 10 D2240 Compression set (% minimum) 45 D395 Using Method B After immer
21、sion in ASTM Reference Fuel B for 70 hours at 232 C Tensile retained (% minimum) 45 D412 Volume change (% maximum) 25 D471 Elongation retained (% minimum) 50 D471 Low temperature properties after extraction in ASTM Reference Fuel B for 70 hours at 232 C, dried and cold conditioning at -31.7 C (-25 F
22、) for seven days. Compression set (% maximum) 60 D1229 Torsional stiffness ratio (maximum) 10 D1053 3.5.2 Retaining pins. If retaining pins are used in lieu of bolts and nuts, pins shall be manufactured of ASTM A108, grade 1045, grade 4140, or grade 4340, carbon steel, and shall be heat treated to R
23、ockwell C hardness of 32 to 38. Pins shall have enough chamfer for ease of installations. The pins shall be zinc plated in accordance with ASTM B633, Fe/Zn-12. Retaining pins shall be captively (preferably with type) retained to the coupling. 3.6 Pressure ratings. Ductile/malleable iron or steel cou
24、plings shall meet the working and test pressure ratings in table III on standard wall steel pipe. Aluminum couplings shall meet the working and test pressure ratings in table III on standard wall steel, aluminum, or stainless steel pipe. Couplings shall be tested to hydrostatic pressures as shown in
25、 table III for a period of not less than 5 minutes without evidence of leakage or permanent deformation. 3.7 Performance requirements. The coupling including the gasket shall be operable at all temperatures from -29 C (-20 F) to +70 C (+158 F), under working pressure from 508 mm (20 in) of mercury v
26、acuum to 6900 kPa (1000 psi) (or rated working pressure of 8, 10, 12, and 14 nominal pipe size coupling) without any leakage or permanent deformation. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-52598A 5 TABLE III. Pressure ratings. NPS desig
27、nator Outer Diameter mm (in) Ductile Iron Coupling Aluminum Coupling Working pressure rating kPa (psi) 1/ Hydrostatic test pressure kPa (psi) Working pressure kPa (psi) Hydrostatic test pressure kPa (psi) 3/4 26.7 (1.050) 6900 (1000) 13800 (2000) - - 1 33.4 (1.315) 6900 (1000) 13800 (2000) 3450 (500
28、) 5500 (800) 1 1/4 42.2 (1.660) 6900 (1000) 13800 (2000) - - 1 1/2 48.3 (1.900) 6900 (1000) 13800 (2000) 3450 (500) 5500 (800) 2 60.3 (2.375) 6900 (1000) 13800 (2000) 3450 (500) 5500 (800) 2 1/2 73.0 (2.875) 6900 (1000) 13800 (2000) 3450 (500) 5500 (800) 3 88.9 (3.500) 6900 (1000) 13800 (2000) 3450
29、(500) 5500 (800) 3 1/2 101.6 (4.000) 6900 (1000) 10350 (1500) - - 4 114.3 (4.500) 6900 (1000) 10350 (1500) 3450 (500) 5500 (800) 5 141.3 (5.563) 6900 (1000) 10350 (1500) 3450 (500) 5200 (750) 6 168.3 (6.625) 6900 (1000) 10350 (1500) 3450 (500) 5200 (750) 8 219.1 (8.625) 5500 (800) 8300 (1200) 2760 (
30、400) 4140 (600) 10 273.0 (10.750) 5500 (800) 8300 (1200) - - 12 323.8 (12.750) 5500 (800) 6900 (1000) - - 14 355.6 (14.000) 2065 (300) 5500 (800) - - 1/ kPa - kilopascals, psi - pounds per square inch 3.8 Treatment and painting. Unless otherwise specified (see 7.3), all exterior surfaces of coupling
31、s shall be cleaned, treated and painted in accordance with the manufacturers standard commercial practice, using water-based acrylic emulsion alkyd enamel. 3.9 Identification marking. Identification marking shall be permanent, legible and shall include as a minimum, the manufacturers identification
32、code (CAGE), the manufacturers part number, the part or identification number (PIN), and the national stock number (NSN) (see 7.3). 4. REGULATORY REQUIREMENTS 4.1 Recovered material. The offeror/contractor is encouraged to use recovered materials to the maximum extent practicable, in accordance with
33、 paragraph 23.403 of the Federal Acquisition Regulation (FAR) (see 3.2). 5. PRODUCT CONFORMANCE PROVISIONS 5.1 Responsibility for inspection. The contractor is responsible for the performance of all inspections (examinations and tests). 5.2 Contractor certification. The contractor shall certify and
34、maintain substantiating evidence that the product offered meets the salient characteristics of this CID and that the product conforms to the producers own drawings, specifications, workmanship standards, and quality Provided by IHSNot for ResaleNo reproduction or networking permitted without license
35、 from IHS-,-,-A-A-52598A 6 assurance practices. Items with known defects shall not be submitted for Government acceptance. The Government reserves the right to require proof of such conformance prior to the first delivery, and thereafter as may be otherwise provided for under the provisions of the c
36、ontract (see 7.3). 6. PACKAGING. Preservation, packing, and marking shall be as specified in the contract or order (see 7.3). 7. NOTES (This section contains information of a general or explanatory nature that may be helpful, but is not mandatory.) 7.1 Part or identifying number (PIN). The PINs to b
37、e used for couplings acquired to this document are created as follows (see 7.3): AA 52598 - X - XX Size code (see table IV) Class A - Aluminum housing B - Malleable iron, ductile iron, and steel housing C - Gasket Only CID number CID designator 7.2 Addresses for obtaining copies of referenced docume
38、nts. 7.2.1 ASME documents. Copies of ASME documents are available from http:/www.asme.org or American Society of Mechanical Engineers, Orders/Inquiries, P.O. Box 2300, Fairfield, NJ 07007-2300. 7.2.2 ASTM documents. Copies of ASTM documents are available from www.astm.org or ASTM International, P.O.
39、 Box C700, West Conshohocken, PA 19428-2959. 7.2.3 AWWA documents. Copies of American Water Works Association documents are available from www.awwa.org or AWWA Bookstore, 6666 W. Quincy Ave., Denver, CO 80235. 7.3 Ordering data. Acquisition documents should specify the following: a. Title, number, a
40、nd date of this CID. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-52598A 7 b. If required, the specific issue of individual documents referenced. c. Class and size required (see 2). d. When treatment and painting is other than as specified (se
41、e 3.8). e. PIN number and quantity of bolts required (see 3.9 and 7.1). f. When an additional contractor certification is required (see 5.2). g. Selection of applicable level of preservation, packaging and marking requirements (see 6). 7.4 Cross reference data. Couplings conforming to this CID are i
42、nterchangeable/substitutable with couplings of the same part number conforming to MIL-C-10387J. TABLE IV. Size code number. NPS Designator Size code number NPS Designator Size code number 3/4 01 4 09 1 02 5 10 1-1/4 03 6 11 1-1/2 04 8 12 2 05 10 13 2-1/2 06 12 14 3 07 14 15 7.5 Supersession data. Am
43、erican Water Works Association (AWWA) specification AWWA C606 supersedes the portion of MIL-C-10387H, dated 3 March 1982, for the couplings for use with water. 7.6 International standardization agreements. Certain provisions of this CID (for groove dimensions, see figure 1 and tables V and VI) are t
44、he subject of International Standardization Agreement NATO STANAG 3756. When amendment, revision, or cancellation of this CID is proposed which will modify the international agreement concerned, the preparing activity will take appropriate action through international standardization channels includ
45、ing departmental accommodations. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-52598A 8 NOTE: See tables V and VI for corresponding dimensions. FIGURE 1. Grooved pipe. Provided by IHSNot for ResaleNo reproduction or networking permitted without
46、 license from IHS-,-,-A-A-52598A 9 TABLE V. Groove dimensions (millimeters). NPS designator Outside diameter A Gasket seat B width Groove width C Groove diameter D 1/ 3/4 26.70.25 15.880.76 7.950.76 23.82 +0.00 -0.38 1 33.40.33 15.880.76 7.950.76 30.23 +0.00 -0.38 1 1/4 42.20.41 15.880.76 7.950.76 3
47、8.99 +0.00 -0.38 1 1/2 48.30.48 15.880.76 7.950.76 45.09 +0.00 -0.38 2 60.30.61 15.880.76 7.950.76 57.15 +0.00 -0.38 2 1/2 73.00.74 15.880.76 7.950.76 69.09 +0.00 -0.45 3 88.9 +0.89 -0.79 15.880.76 7.950.76 84.94 +0.00 -0.45 3 1/2 101.6 +1.02 -0.79 15.880.76 7.950.76 97.38 +0.00 -0.51 4 114.3 +1.14
48、-0.79 15.880.76 9.53 +0.76 110.08 +0.00 -0.51 5 141.3 +1.42 -0.79 15.880.76 9.530.76 137.03 +0.00 -0.56 6 168.3 +1.60 -0.79 15.880.76 9.530.76 163.96 +0.00 -0.56 8 219.1 +1.60 -0.79 19.050.76 11.130.76 214.40 +0.00 -0.64 10 273.01 +1.60 -0.79 19.050.76 12.700.76 268.27 +0.00 -0.69 12 323.9 +1.60 -0.79 19.050.76 12.700.76 318.29 +0.00 -0.76 14 355.6 +1.60 -0.79 23.830.76 12.700.76 350.04 +0.00 -0.76 1/ = See 7.6 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-
