1、A-A-52597 = 9999974 OLb9997 29b = INCH-POUND A-A-52597 February 23. 1996 SUPERSEDING 20 December 1989 MILGV-103 86E(ME) COMMERCIAL ITEM DESCRIPTION VALVES, CHECK: SWING, CAST-IRON AND STEEL The General Services Administration has authorized the use of this commercial item description (CID) for all f
2、ederal agencies. 1. SCOPE. This CID covers requirements for cast-iron and steel swing check valves, hereinafter referred to as “valves”, designed for liquid or gaseous petroleum products. 2. CLASSIFICATION. Valves shd be of the following sizes and classes, as specified (see 7.2). 2-inch C50.8 millim
3、eters (mm) 3-inch (76.2 mm) 12-inch (305 mm) 14-inch (356 mm) 4-inch (1 02 m) 6-inch (1 52 m) 16-inch (406 mm) 18-inch (457 mm) 8-inch (203 mm) 10-inch (254 mm) 2O-inch (508 mm) 24-hch (610 m) Beneficial comments, recommendations, additions, deletions, clarifications, etc. and any other data which m
4、ay improve this document should be sent by letter to: U.S. Army Tank-automotive and Armaments Commands. ATTN: AMSTA-TR-EBLUE. Warren. MI 48397-5000. FSC 4820 DISTRIBUTION STATEMENT A. Approved for public release; distribution is unlimited. Provided by IHSNot for ResaleNo reproduction or networking p
5、ermitted without license from IHS-,-,-A-A-52597 Class Material Code 125-pond 56.7 kilogras (kg) 150-pound (68.0 kg) 300-pound (136 kg) I - Cast Iron II - Steel 25O-pond (1 13 kg) 400-pond (1 8 1 kg) 6OO-p0wid (272 kg) 3. SALIENT CHARACTERISTICS 3.1 Materials. Unless otherwise specified herein, mater
6、ials shall be h accordance with the manufacturers material specifications. The use of recovered material made in compliance with regulatory requirements is acceptable providing that all requirements of this CID are met (see 4.1). 3.1.1 Corrosion resistance. The valves shall be fabricated from materi
7、als that are inherently corrosion resistant or treated to provide protection against the various types of corrosion that may be encountered. 3.1.2 Dissimilar metals. Dissimilar metals shall not be used in intimate contact with each other unless protected against galvanic corrosion. 3.2 Design and co
8、nstruction. The valves shall be designed to perform as specified herein with liquid or gaseous petroleum products. Flowlines through the valves shall be streamlined. The 6,8, and 12 inch (152,203, and 305 mm) valves shall pass a brush-type pipeline cleaner conforming to A-A-525 19. Valve port openin
9、gs shall be fill opening. The minimum bore for the inside diameter (ID) of each valve size shall be as shown in Table I. 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-52597 TABLE I. Minimum bore. I valve size I inches (mm) 2 (50.8) 3 (76.2) 6
10、 (152) 8 (203) 10 (254) 12 (305) 14 (356) 16 (406) 18 (457) 20 (508) 24 (610) 4 (102) Minimum bore (ID) inches (mm) 2 (50.8) 3 (76.2) 6 (152) 8 (203) 10 (254) 12 (305) 13.25 (337) 15.25 (387) 17.25 (438) 19.25 (489) 23.25 (591) 4 (102) 3.2.1 Cast-iron valves. Cast-iron valves shall conform to MSS SP
11、-71. Unless otherwise specified (see 7.2), the seating shall be bronze. 3.2.1,l End flanges. - End flanges shall be integral with the valve body. Flange facings and drilling shall conform to ANSI B16.1. The flanges shall be finished on the joint side in accordance withMSS SP-6. 3.2.1.2 Covers. Mater
12、ial for the cast-iron valve covers shall be in accordance with ASTM A126, grade B or C. 3.2.1.2.1 Cover bolts. Bolts for the covers shall conform to ASTM A307, grade By and shall be of the stud, bolt-stud, bolt, or capscrew type. The bolts shall have heavy, unfinished, hexagonal heads. The bolts sha
13、ll be wet assembled. 3.2.2 Steel valves. Steel valves shall be manufactured in conformance to API SPEC 6D, and shall be either cast or forged steel. 3.2.2.1 End connections. Valve ends shall be flanged, threaded, or beveled for welding (steel valves only), as specified (see 7.2). Threaded ends shall
14、 not be furnished on valves with end connections larger than 4 inches (1 O2 mm). 3 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-52597 3.2.2.2 End flanges. End flanges shall be integral with the valve body. Flange facings and drilling shall con
15、form to ANSI B16.5. The flanges shall be finished on the joint side in accordance withMSS SP-6. 3.2.2.3 Covers. Covers shall be castings, forgings, or steel plates. The covers shall be removable for access to the interior of the valves. 3.2.2.3.1 Cover bolts. Bolts and studs for the covers shall con
16、form to ASTM A449. The bolts shall have heavy, unfinished, hexagonal heads. The bolts shall be wet assembled. 3.2.2.4 Seats. Unless otherwise specified (see 7.2), the valves shall be furnished with preformed, hydrocarbon, fuel resistant, O-ring clapper ring seats capable of withstanding continuous t
17、emperatures fiom -65 to +160 degrees Fahrenheit (OF) -54 to +71 degrees Celsius (OC). 3.2.2.5 Metal-to-metal seats. Unless otherwise specified (see 7.2), seating material of steel valves having metal-to-metal seats shall be 11.5 to 13.4 percent chromium steel. 3.2.2.6 O-ring clapper seals. When spec
18、ified (see 7.2), the seal between clapper and body seat faces shall be an elastomeric ring, securely lodged in a dovetail groove, positioned in either the clapper or body seat face. The elastomeric ring shall be eld,removable and replaceable, and shaii be chosen for suitability in the service specif
19、ied. In the absence of any such specication, the elastomer shall be suitable for fuels containing aromatics. 3.2.2.7 Welding ends. Steel valve ends shall be beveled for welding in accordance with ANSI B16.25, figure 2 or 3, as applicable. 3.2.3 Cast-iron and steel valves. 3.2.3.1 Outside lever and w
20、eight. When specified (see 7.2), valves shall be equipped with an outside lever and weight. The hinge pin shall extend through a pressure-tight stufing box in the side of the valve body. The lever shall be keyed and locked to the hinge pin. The weight shall be adjustable along the length of the leve
21、r. Set screws or jam nuts shall secure the weight to the lever. Unless otherwise specified (see 7.2), the lever and weight shall balance the disc. 3.2.3.2 Flow indicator. Each valve body shall have an arrow on both sides to indicate the direction of flow through the valve. These arrows may be cast o
22、r stamped in the metai, or attached by spot welding or brazing. The edges of the arrows shall be rounded. 3.2.3.3 End flange gaskets. Unless otherwise specified (see 7.2), end flange gaskets shall be fabricated fiom 0.062 inch (1.6 mm) thick material. 4 Provided by IHSNot for ResaleNo reproduction o
23、r networking permitted without license from IHS-,-,-A-A-52597 3.2.3.4 End flange bolting. When specified (see 7.2), end flange bolting shall be furnished. Bolts shall have regular square, or heavy hexagonal heads, or may be of the bolt-stud type with dimensions conforming to ANSI B18.2.2. For cast-i
24、ron valves, the bolts, bolt-studs, or nuts shall conform to ASTM A307, grade B. For steel valves, the bolts or bolt-studs shall conform to ASTM A449. 3.2.3.5 Threaded ends. Valve ends shall be threaded with internal NPT threads conforming to API SPEC 5B. 3.2.3.6 End-to-end dimensions. End-to-end dim
25、ensions shall conform to ANSI B16.10. 3.3 Identification and marking. Identification and marking shall be permanent and legible, and shall include as a minimum, the manufacturers identification code (CAGE), the contract number, the part or identiwg number (PIN) (see 7.3), and the national stock numb
26、er (NSN). 3.3.1 Body marking. Body marking shall conform to MSS SP-25. 3.4 Treatment and painting. Unless otherwise specified in contract (see 7.2), the parts ofthe valve normally painted shali be cleaned, treated, and painted in accordance with the contractors commercial practice. When a color choi
27、ce is standard practice, camouflage green is preferred. 4. REGULATORY REQUIREMENTS. 4.1 Recovered material. The offeror/contractor is encouraged to use recovered materials to the maximum extent practicable, in accordance with paragraph 23.403 of the Federal Acquisition Regulation (FAR). 5. QUALITY A
28、SSURANCE PROVISIONS. 5.1 Responsibility for inspection. The contractor is responsible for the pefiormance of all inspections, examinations, and tests. 5.2 Contractor certification. The contractor shall certfi and maintain substantiating evidence that the product offered meets the salient characteris
29、tics of this CID, and that the product conforms to the producers own drawings, specifications, workmanship standards, and quality assurance practices. Items with known defects shall not be submitted for Government acceptance. The Government reserves the right to require proof of such conformance pri
30、or to the first delivery, and thereafter, as may be otherwise provided for under the provisions of the contract. 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,- A-A-52597 9999974 Ol170002 047 l!H A-A-52597 6. PACKAGING. Preservation, packing, and
31、marking shall be as specified in the contract or order (see 7.2). 7. NOTES (This section contains information of a general or explanatory nature that may be helpful but is not mandatory.) 7.1 Addresses for obtaining copies of referenced documents. 7.1.1 Government documents. Copies of CID A-A-525 19
32、 may be obtained fiom the Defense Printing Service Detachment Office, Bldg. 4D (Customer Service), 700 Robbins Avenue, Philadelphia, PA 191 11-5094. 7.1.2 Non-Government publications. Copies of ANSI B16.1, B16.5, B16.10, B16.25, and B18.22 may be obtained fkom the AmericanNational Standards Institut
33、e, 11 West 42nd Street, 13th Floor, New York, NY 10036. Copies of API specifications 5B and 6D may be obtained from the American Petroleum Institute, Production Division, 1220 L Street, NW, Washington, DC 20005. Copies of ASTM A126, A307, and A449 may be obtained from the American Society for Testin
34、g and Materials, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959. Copies of MSS SP-6, SP-25, and SP71 may be obtained fiom the Manufacturing Standardization Society of the Valves and Fitting Industry, 127 Park Street NE, Vienna, VA 22180. . 7.2 Ordering data. Acquisition documents must speci
35、Sl the following: a. b. d. e. f. g. h. C. 1. j- k. 1. m. n. O. Title, number, and date of this CID. Issue of DODISS to be cited in the solicitation. Size and class of valve required. Seating material required if other than bronze. Type of valve ends required for steel valves. Type of seats required
36、for steel valves ifother than specified. Seating material required for metal-to-metal seats if other than specified. When O-ring clapper seal is required. When an outside lever and weight are required. When the lever and weight are not required to balance the disc. When end-flange gaskets shall be f
37、abricated from material other than specified. When end-flange bolting shall be furnished. PIN, and quantity of valves required. Finish, if other than as specified. Applicable level of preservation, packing, and marking. 6 Provided by IHSNot for ResaleNo reproduction or networking permitted without l
38、icense from IHS-,-,-A-A-52597 - 7.3 Pari or identification number PIN) . The PINS to be used for valves acquired to this CID are created as follows: Material (see 7.3.3) Class (see 7.3.2, Table II) Size (see 7.3.1) CID number Designates a CID 7.3.1 Size code. The size code for the valve shall be equ
39、al to the size of the valve, which is designated in inches. EXAMPLE: Valve Size Size Code 24 inch 24 7.3.2 Class code. See Table II. TABLE II. Class code. 125 (56.7) 150 (68) 250 (113) 300 (136) 400 (181) 600 (272) Code 7.3.3 Material code. The part number (PIN) shall have material code “A” for cast
40、-iron valves, or code “B” for steel valves. 7.4 Cross-reference data. Valves conforming to this CID are interchangeable/substitutable with valves conforming to MIL-V-l0386E(ME). 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-A-A-52597 MILITARY INTERESTS: Custodian: Army - AT Review Activity: Army - CE1 DLA - CS CIVIL AGENCY COORDINATING ACTI“Y: GSA - FSS Preparing Activity: Army - AT (Project 4820-0706) 8 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-
