1、 MIL-DTL-17813H 29 August 2009 SUPERSEDING MIL-DTL-17813G 20 February 2004 DETAIL SPECIFICATION EXPANSION JOINTS, PIPE, METALLIC BELLOWS, GENERAL SPECIFICATION FOR This specification is approved for use by all Departments and Agencies of the Department of Defense. 1. SCOPE 1.1 Scope. This specificat
2、ion covers metallic bellows expansion joints used to absorb dimensional movement in piping systems. This movement may be caused by thermal expansion, contraction, or adjacent structural movements. 1.2 Classification. The expansion joints are of the following types and classes as specified (see 6.2).
3、 Type I - Corrugated bellows, unreinforced. Type II - Corrugated bellows, reinforced. Type III - Fabricated bellows. Class 1 - Single bellows expansion joint. Class 2 - Double bellows expansion joint. Class 3 - Pressure balanced expansion joint. Class 4 - Externally pressurized single or double expa
4、nsion joint. Class 5 - Universal expansion joint Class 6 - Hinged expansion joint Class 7 - Gimbal expansion joint Note: Not every class applies to every type of expansion joint. AMSC N/A FSC 4730 Comments, suggestions, or questions on this document should be addressed to: Defense Supply Center, Col
5、umbus, Attn: DSCC-VAI, P.O. Box 3990, Columbus OH 43218-3990, or emailed to FluidFlowdla.mil. Since contact information can change, you may want to verify the currency of this address information using the ASSIST Online database at http:/assist.daps.dla.mil. INCH-POUND Provided by IHSNot for ResaleN
6、o reproduction or networking permitted without license from IHS-,-,-MIL-DTL-17813H 2 1.3 Part or Identifying Number (PIN). The PIN to be used for metallic bellows, expansion joint pipes acquired to this specification are created as follows: 2. APPLICABLE DOCUMENTS 2.1 General. The documents listed i
7、n this section are specified in sections 3, 4, or 5 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 had been made to ensure the completeness of the list, document
8、 users are cautioned that they must meet all specified requirements documents cited in sections 3, 4, or 5 of this specification, whether or not they are listed. 2.2 Government documents. 2.2.1 Specifications, standards, and handbooks. The following specifications, standards, and handbooks form a pa
9、rt of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are those listed in the solicitation or contract. DEPARTMENT OF DEFENSE SPECIFICATIONS (See supplement 1 for list of specification sheets.) 2.3 Non-Government publications. The following doc
10、uments form a part of this document to the extent specified herein. Unless otherwise specified, the issues of these documents are cited in the solicitation or contract. AMERICAN SOCIETY OF MECHANICAL ENGINEERS (ASME) ASME B16.5 - Steel Pipe Flanges and Flanged Fittings ASME B31.1 - Piping, Power ASM
11、E - ASME Boiler and Pressure Vessel Code (Copies of these documents are available online at http:/www.asme.org or from the ASME Information Central Orders/Inquiries, P.O. Box 2300, Fairfield, NJ 07007-2300.) Specification number Size Class M prefix Specification sheet number End connection (F for fl
12、ange ends, W for weld ends, and V for Vanstone ends) Type Pressure rating M 17813 /1 - 3 - I - 1 - 150 - W Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-17813H 3 ASTM INTERNATIONAL ASTM A240/A240M - Heat Resisting Chromium and (Chromium Nic
13、kel Stainless Steel) Plate, Sheet and Strip for Fusion Welded Unfired Pressure Vessels ASTM B36/B36M - Brass Plate, Sheet Strip and Rolled Bar ASTM B103/B103M - Plate Phosphor Bronze, Sheet, Strip and Rolled Bar ASTM B127 - Nickel-Copper Alloy Plate, Sheet and Strip ASTM B152/B152M - Copper Sheet, S
14、trip, Plate, and Rolled Bar ASTM B162 - Nickel Plate, Sheet, and Strip ASTM B168 - Nickel-Chromium-Iron Alloys, and Nickel-Chromium-Cobalt-Molybdenum Alloy Plate, Sheet, and Strip ASTM B194 - Copper-Beryllium Alloy Plate, Sheet, Strip and Rolled Bar ASTM B265 - Titanium and Titanium Alloy Strip, She
15、et, and Plate ASTM B409 - Nickel-Iron-Chromium Alloy Plate, Sheet and Strip ASTM B424 - Plate, Sheet, and Strip, NI-FE-CR-MO-CU Alloy ASTM B443 - Plate, Sheet, and Strip, Nickel-Chromium-Molybdenum-Columbium Alloy ASTM B575 - Low-Carbon Nickel-Chromium-Molybdenum, Low-Carbon Nickel-Chromium-Molybden
16、um-Copper, Low-Carbon Nickel- Chromium-Molybdenum-Tantalum, and Low-Carbon Nickel- Chromium-Molybdenum-Tungsten Alloy Plate, Sheet, and Strip (Copies of these documents are available from http:/www.astm.org or ASTM International, P.O. Box C700, 100 Barr Harbor Drive, West Conshohocken, PA 19428-2959
17、.) EXPANSION JOINT MANUFACTURER ASSOCIATION, INC. (EJMA) Standards of the Expansion Joint Manufacturers Association, Inc. (Copies of this document is available from http:/www.ejma.org or to the Expansion Joint Manufacturers Association, 25 North Broadway, Tarrytown, NY 10591.) INTERNATIONAL ORGANIZA
18、TION FOR STANDARDIZATION (ISO) ISO 17025 - General Requirements for the Competence of Testing and Calibration Laboratories (Copies of these documents are available from http:/www.iso.ch or International Organization for Standardization American National Standards Institute, 11 West 42ndStreet, 13thF
19、loor, New York, NY 10036.) NATIONAL CONFERENCE OF STANDARDS LABORATORIES (NCSL) NCSL Z540.3 - Requirements for the Calibration of Measuring and Test Equipment (Copies of these documents are available from http:/www.ncsli.org or to National Conference of Standards Laboratories (NCSL), 2995 Wilderness
20、 Place, Suite 107, Boulder, CO 80301-5404.) 2.4 Order of precedence. Unless otherwise noted here in or in the contract, in the event of a conflict between the text of this document and the references cited herein (except for related specification sheets), the text of this document takes precedence.
21、Nothing in this document, however, supersedes applicable laws and regulations unless a specific exemption has been obtained. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-17813H 4 3. REQUIREMENTS 3.1 Specification sheets. The individual ite
22、m requirements shall be as specified herein and in accordance with the applicable specification sheet. In the event of any conflict between the requirements of this specification and the specification sheet, the latter shall govern. 3.2 Standard commercial product. The expansion joint shall, as a mi
23、nimum, be in accordance with the requirements of this specification and shall be the manufacturers standard commercial product. Additional or better features which are not specifically prohibited by this specification but which are a part of the manufacturers standard commercial product, shall be in
24、cluded in the expansion joint being furnished. A standard commercial product is a product, which has been sold or is being currently offered for sale on the commercial market through advertisements, manufacturers catalogs, or brochures, and represents the latest production model. 3.3 First article.
25、When specified (see 6.2), a sample shall be subjected to first article inspection in accordance with 4.5. 3.3.1 Determination of movement. In determining the qualifying rated contraction or extension, consideration shall be given to the equivalent axial movement due to lateral deflection and angular
26、 rotation. Equivalent axial movement shall be added to the actual specified values of axial movement and shall be computed in accordance with the EJMA Standards. 3.3.2 Universal, swing, and pressure-balanced expansion joints. Universal, swing, and pressure-balanced expansion joints consist of two or
27、 more bellows connected by pipe sections or fittings. Since it is not the intent of the specification to test these units as assemblies, only one prototype bellows is required to approve any such combination of bellows. 3.4 Materials. Materials used shall be free from defects, which would adversely
28、affect the performance or maintainability of individual components, or of the overall assembly. Materials not specified herein shall be of the same quality used for the intended purpose in commercial practice. Unless otherwise specified herein, all equipment, material, and articles incorporated in t
29、he work covered by this specification are to be new and fabricated using materials produced from recovered materials. 3.4.1 Recycled, recovered, or environmentally preferable materials. Recycled, recovered, or environmentally preferable materials should be used to the maximum extent possible, provid
30、ed that the material meets or exceeds the operational and maintenance requirements, and promotes economically advantageous life cycle costs. 3.4.2 Pipe and bellows materials. Material for the bellows shall be one or more of the following: a. ASTM A240/A240M - Types 304, 304L, 310, 316, 316L, 321, 34
31、7, or 348. b. ASTM B36/B36M - 70/30 Brass (UNS C26000). c. ASTM B103/B103M - Grade A Phosphor Bronze (UNS C51100). d. ASTM B127 - Class A Nickel Copper Alloy. e. ASTM B152/B152M - UNS C11000, C11300, C11400, C11600, C12000, C12200, C12300, C12500, or C14200 f. ASTM B162 - Nickel g. ASTM B168 - Nicke
32、l-Chromium-Iron Alloy. h. ASTM B194 - Beryllium Copper. i. ASTM B265 - Titanium and Titanium Alloy j. ASTM B409 - Nickel-Iron-Chromium Alloy. k. ASTM B424 - Nickel-Iron-Chromium-Molybdenum-Copper Alloy. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,
33、-MIL-DTL-17813H 5 l. ASTM B443 - Nickel-Columbium-Molybdenum Alloy. m. ASTM B575 - Low-Carbon Nickel-Chromium-Molybdenum, Low-Carbon Nickel-Chromium-Molybdenum-Copper, Low-Carbon Nickel- Chromium-Molybdenum-Tantalum, and Low-Carbon Nickel- Chromium-Molybdenum-Tungsten Alloy Material not definitely s
34、pecified shall be of the quality used for the purpose in commercial practice (see 6.2). 3.5 Performance. 3.5.1 Movement. The expansion joint shall be capable of absorbing the normal operating movement, such as axial, lateral, angular, or a combination of these movements as specified (see 6.2 and 6.3
35、). 3.5.1.1 Additional movement. When specified (see 6.2), the expansion joint shall be physically capable of absorbing an additional movement in an amount up to the rated movement of the joint (see 6.3). This movement can be installation tolerances or upset conditions; the nature of this movement mu
36、st be specified (see 6.2). 3.5.1.2 Cyclic endurance (see 4.8.2). The capacity of the expansion joint to withstand the number of cycles specified shall be determined in accordance with the EJMA Standards, a history of successful operation of similar bellows, or by a qualification test, and shall be s
37、pecified (see 6.2). The manufacturer shall certify compliance with these requirements. 3.5.2 Deflection force (see 4.8.4). The force required to deflect the expansion joint shall be equal to or less than the force specified (see 6.2). The connecting piping shall be properly guided and anchored in ac
38、cordance with the EJMA Standards. 3.5.3 Expansion joint stability. The expansion joint shall be designed as to preclude instability when the joint is tested in accordance EJMA Standards. Instability shall be as specified in the EJMA Standards. 3.5.4 Hydrostatic. When tested as specified in 4.8.1, th
39、e expansion joint shall be free of leaks, resistant to plastic deformation, and found to be stable as specified in EJMA Standards. 3.6 Construction. The expansion joints covered by this specification shall be designed and constructed in accordance with the generally accepted engineering principles s
40、et in ASME B31.1, or section VIII, division 1, of the ASME Boiler and Pressure Vessel Code, and/or the EJMA Standards. 3.6.1 End connections. The connecting ends of the joints shall be provided with pipe flanges or welded nipples as specified (see 6.2). Flange dimensions shall conform to the diamete
41、r and drilling of ASME B16.5. The size, material, and pressure class shall be as specified (see 6.2). Facing shall be as specified. Unless otherwise specified (see 6.2), the manufacturer may furnish “Van Stone” facings, made by turning or flaring the ends of the bellows over the flange face. The out
42、side diameter of the Van Stone facing is to be the same as an equivalent lap stub end, or the raised face of the mating flange if different. The face of the Van Stone, however is not a machine finish and it may not comply in every respect with the ASME B16.5 dimensions for a raised face. A lap joint
43、 stub end may be provided when necessary. Welding nipples shall be of a size, material, and nominal wall thickness designation specified, and shall be beveled for welding. 3.6.2 Limit stops. When required for proper operation (see 6.2), limit stops shall be provided and arranged to limit the movemen
44、t of the joint to that for which it is designed. Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-DTL-17813H 6 3.6.3 System alignment. Piping adjacent to the expansion joint shall be properly aligned and guided so that the expansion joint is subje
45、cted to only those movements for which it is designed. On a universal expansion joint incorporating tie-rods, the rods may be used to support the weight of the center section. Joints aligned by internal guides shall have suitable means provided to prevent excessive annular pressure between the guide
46、 and the bellows. (Note: The use of internally or externally guided expansion joints does not eliminate the necessity of using adequate external pipe guides.) 3.6.4 Guiding. Expansion joints may have guides located both internally and externally or only internally to the chamber, as specified (see 6
47、.2). Guides shall be integral with the body or rigidly attached to the tube. They shall be concentric with each other, with the body of the joint, and with the tube. Limit stops shall be furnished in accordance with the manufacturers standard practice. 3.6.5 Flow liners. Flow liners and material for
48、 these liners shall be specified for all expansion joints, regardless of the metal of the bellows, in the following cases (see 6.2): a. When friction losses should be held to a minimum and smooth flow is desired. b. When flow velocities exceed those specified in the EJMA Standards. c. When there is
49、a danger of pitting or erosion, as in lines carrying abrasive solid particles, heavy sleeves are required. d. During high temperature service with an uninsulated bellows, when it is necessary to decrease the temperature of the bellows and enable the metal to retain its higher mechanical properties. e. When copper alloy bellows are used for high pressure drip, or superheated steam
