1、This specific Department of NILITARY SPECIFICATION VALVE, GATE, BRONZE I INCH-POUND I MIL-V-l189D(SH) 15 December 1987 SUPERSEDING MIL-V-l189C(SHIPS) 25 August 1958 (See 6.8) ation is approved for use within the Naval Sea Systems Command, the Navy, and is available for use by all Departments and Age
2、ncies of the Department of Defense. 1. SCOPE 1.1 Scope. This specification describes gate valves for use in water, oil, gas, or steam services on shipboard. 1.2 Classification. Gate valves shall be of the following types and classes (see 6.2.1): Type I - Rising stem, outside screw and yoke. Class 1
3、- (See 6.6) Class 2 - For working pressures not greater than 250 pounds per square inch (lb/in2), 2-1/2 to 12 inches nominal pipe size (nps) (water, oil, gas or steam). Class 3 - For working pressures 251 to 400 lb/in2, 2-1/2 to 12 inches nps (water, oil, gas, or steam). Class 4 - For working pressu
4、res not greater than 50 lb/in*, 14 to 46 inches nps (seawater). Type II - Non-rising stem, for working pressures not greater than 50 lb/in2, 14 to 46 inches nps (seawater). Beneficial comments (recommendations, additions, deletions) and any pertinent data which may be of use in improving this docume
5、nt should be addressed to: Commander, Naval Sea Systems Command, SEA 5523, Department of the Navy, Washington, DC 20362-5101 by using the self-addressed Standardization Document Improvement Proposal (DD Form 1426) appearing at the end of this document or by letter. AMSC N/A FSC 4820 DISTRIBUTION STA
6、TEMENT A Approved for public release; distribution unlimited Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-V-LL87D 48 m 9799906 0270225 B m ?IIIi-”l 159D(SH) 2. APPLICABLE DOCUMENTS 2.1 Government documents. 2.1.1 Specifications and standards.
7、The following specifications and standards form a part of this specification to the extent specified herefn. Unless otherwise specified, the issues of these documents shall be those listed in the issue of the Department of Defense Index of Specifications and Standards (DoDISS) and supplement thereto
8、, cited in the solicitation. 4 SPECIFICATIONS FEDERAL HH-P-46 - Packing; Asbestos, Sheet, Compressed. QQ-N-281 - Nickel-Copper Alloy Bar, Rod, Plate, Sheet, Strip, Wire, Forgings, and Structural and Special Shaped Sect ions. QQ-N-286 - Nickel-Copper-Aluminum Alloy, Wrought (UNS NOSSOO). QQ-N-288 - N
9、ickel-Copper Alloy and Nickel-Copper-Silicon QQ-C-390 - Copper Alloy Castings (Including Cast Bar). QQ-C-591 - Copper-Silicon, Copper-Zinc-Silicon, and Copper- Nickel-Silicon Alloys: Rod, Wire, Shapes, Forgings, and Flat Products (Flat Wire, Strip, Sheet, Bar, and Plate). Alloy Castings. MILITARY MI
10、L-V-3 - Valves, Fittings, and Flanges (Except for Systems MIL-S-901 - Shock Tests, H.I. (High-Impact); Shipboard Indicated Herein); Packaging of. Machinery, Equipment and Systems, Requirements for. Durometer Hardness. Equipment. MIL-G-1149 - Gasket Materials, Synthetic Rubber, 50 and 65 MIL-P-15024
11、- Plates, Tags and Bands for Identification of MIL-P-15024/5 - Plates, Identification. MIL-F-20042 - Flanges, Pipe and Bulkhead, Bronze (Silver MIL-G-22050 - Gasket and Packing Material, Rubber, for Use Brazing). with Polar Fluids, Steam, and Air at Moderately High Temperatures. for Seawater Service
12、. or Textured Tape and Preformed Ring. MIL-B-24480 - Bronze, Nickel-Aluminum (UNS No. C95800) Castings MIL-P-24503 - Packing Material, Graphitic, Corrugated Ribbon DOD-G-24508 - Grease, High Performance, Multipurpose. (Metric) DOD-V-24657 - Valve Actuator, Direct Coupled, Gear Driven Electrically Po
13、wered for Naval Shipboard Propulsion and Auxiliary Systems. (Metric) Fluid, and Compression Set Resistant. MIL-R-83248 - Rubber, Fluorocarbon Elastomer, High Temperature, 2 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-STANDARDS FEDERAL FED-STD-H28
14、 - Screw-Thread Standards for Federal Services. MILITARY MIL-STD-105 - Sampling Procedures and Tables for Inspection MIL-STD-167-1 - Mechanical V-ibrations of Shipboard Equipment by Attributes. (Type I - Environmental and Type II - Internally Excited). - NIL-STD-278 - Welding and Casting Standard. 2
15、.1.2 Other Government drawings and publications. The following other Government drawings and publications form a part of this specification to the extent specified herein. Unless otherwise specified, the issues shall be those in effect on the date of the solicitation. DRAWINGS NAVAL SEA SYSTEMS COMM
16、AND (NAVSEA) NAVSHIPS 803-1385620 - Handwheels for Valves. NAVSHIPS 803-2177917 - Valves, Bronze, Flanged, Gate 250 PSI WOG. PUBLICATION NAVSEA 0900-LP-001-7000 - Fabrication and Inspection of Brazed Piping Systems. (Copies of specifications, standards, drawings, and publications required by contrac
17、tors in connection with specific acquisition functions should be obtained from the contracting activity or as directed by the contracting activity.) 2.2 Other publications. The following documents form a part of this specification to the extent specified herein. Unless otherwise specified, the issue
18、s of the documents which are DoD adopted shall be those listed in the issue of the DoDISS specified in the solicitation. Unless otherwise specified, the issues of documents not listed in the DoDISS shall be the issue of the nongovernment documents which is current on the date of the solicitation. AM
19、ERICAN SOCIETY FOR TESTING AND MATERIALS (ASTM) B 61 - Standard Specification for Steam or Valve Bronze B 98 - Standard Specification for Copper-Silicon Alloy Rod, Bar, B 148 - Standard Specification for Aluminum-Bronze Sand B 164 - Standard Specification for Nickel-Copper Alloy Rod, B 584 - Standar
20、d Specification for Copper Alloy Sand Castings Castings. (DoD adopted) and Shapes. (DoD adopted) Castings. (DoD adopted) Bar, and Wire. (DoD adopted) for General Applications. (DoD adopted) Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-(Application
21、 for copies stlould be addressed to the American Society for Testing and Materials, 1916 Race Street,.Philadelphia, PA 19103.) AMERICAN NATIONAL STANDARDS INSTITUTE (ANSI) B1.1 - Unified Inch Screw Threads (UN and UNR Thread Form). B18.2.1 - Square and Hex Bolts and Screws Inch Series. B18.2.2 - Squ
22、are and Hex Nuts. (DoD adopted) (DoD adopted) (DoD adopted) (Application for copies should be addressed to the Amerkan National Standards Institute, 1430 Broadway, New York, NY 10018.) SOCIETY OF AUTONOTIVE ENGINEERS (SAE) HSJ 1086 - Metals and Alloys in the Unified Numbering System. AMS 4676 - Allo
23、y Bars and Forgings, Corrosion Resistant AMS 4892 - Alloy Castings, Sand and Centrifugal, Corrosion and (DoD adopted) 66.5 Ni-3.OA1-0.62 Ti-28Cu. Heat Resistant 66Ni - 29Cu - 4.0Si As Cast. (Application for copies should be addressed to the Society of Automotive Engineers, 400 Commonwealth Drive, Wa
24、rrendale, PA 15096.) (Nongovernment standards and other publications are normally available from the organizations which prepare or which distribute the documents. These documents also may be available in or through libraries or other informational services.) 2.3 Order of precedence. In the event of
25、 a conflict between the text of this specification and the references cited herein (except for associated detail specifications, specification sheets or MS standards), the text of this specification shall take precedence. Nothing in this specification, however, shall supersede applicable laws and re
26、gulations unless a specific exemption has been obtained. 3. REQUIREMENTS 3.1 First article. When specified in the contract or purchase order, a sample shall be subjected to first article inspection (see 4.3 and 6.3). 3.2 Materials. Unless otherwise specified (see 6.2.1), valve materials shall be in
27、accordance with table I. Alternate materials may be considered in lieu of those specified in table I provided they are approved by the agency concerned. When specified in the contract or order, a certificate of compliance shall be prepared (see 6.2.2). 4- Provided by IHSNot for ResaleNo reproduction
28、 or networking permitted without license from IHS-,-,-TABLE I. List of materials. Name of part I Materials Body bonnet yoke packing gland Valve bronze Nickel aluminum bronze I Silicon bronze Threaded fasteners Nickel-copper alloy Specification or standard See notes 1 and QQ-C-390, ASTPl B 61 Remarks
29、 (UNS C92200) For sizes under 16 inches only. 2 MIL-B-24480, ASTN B 148 (UNS C95800) All sizes and 4 alloy 958 See notes 1, 2, 3 QQ-C-591, ASTM B 98 ANSI B18.2.1 ANSI B18.2.2 (UNS C 65100) and QQ-N-281, ASRI B 164 See note 1 (UNS N04400) Nickel aluminum MIL-B-24480, ASTM B 148 bronze alloy 958 (UNS
30、C95800) See notes 1, 2, St em Wrought nickel- QQ-N-281, ASTM B 164 dis c AMS 4676 (UNS N05500) seat ring copper alloy (UNS N 04400) QQ-N-286, 3 and 4 Cast nickel - QQ-N-288 COMP. D, AMS 4892 copper alloy (UNS N04019) Yoke bushing Manganese bronze ASTM B 584 (UNS C86500) Bonnet gasket Compressed shee
31、t HH-P-46 class 1 Operating nut Rubber sheet MIL-G-1149 class 2 Fluorocarbon MIL-R-83248 type II, For steam or Ethylene propy- MIL-G-22050 For oil service class 1 lene rubber Aluminum alloy Drawing 803-1385620 Handwheel Except seawater Graphitic MIL-P-24503 water service Stem packing Te f lon Commer
32、cial I I I I I I 1. Table I contains the commercial and military specifications and standards, and in addition, contains the corresponding DoD adopted SAE HSJ 1086 Unified Numbering System (UNS) designation. Reference to a specific UNS designation will permit the use of any one of the many alloy spe
33、cifications and standards listed in SAE HSJ 1086 for that UNS number. 2. Valves for seawater service shall be provided with nickel-copper alloy trim, such as discs, seats, stem guides as applicable. 5 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-3
34、. For valves where low permeability (nonmagnetic) material is required, QQ-N-286 shall be used for valve trim. i. Temper anneal at 1350 k 50 degrees Fahrenheit (OF) for 6 hours. Required for seawater service (see AST?! B 148). 3.2.1 Recovered materials. Unless otherwise specified herein, all equipme
35、nt, material, and articles incorporated in the products covered by this specification shall be new and may be fabricated using materials produced from recovered materials to the maximum extent practicable without jeopardizing the intended use. The term “recovered materials” means materials which hav
36、e been collected or recovered from solid waste and reprocessed to becme a source of raw materials, as opposed to virgin raw materials. None of the above shall be interpreted to mean that the use of used or rebuilt products is allowed under this specification unless otherwise specifically specified.
37、3.3 Service ratings. Service ratings shall be as specified in table II. Class 1 2 3 4 ” TABLE II. Service ratinps. NPS (inches) Obsolete 2-1/2 to 12 inclusive 250 lb/in2 max 2-1/2 to 12 inclusive 400 lb/in2 max 14 to 46 inclusive 14 to 46 inclusive Pressure max (lb/in2) gauge Temperature max OF See
38、Drawing 803-2177917 400 360 320 280 240 200 150 50 50 150 200 250 300 35 O 400 425 150 150 The service pressure rating at temperatures below 150F shall be the same as the rating shown for 150F. Valves used at lower temperatures shall conform to the requirements of the applicable condition under whic
39、h they are used. 3.3.1 Type 1, class 2 valves. Type 1, class 2 valves shall be constructed in accordance with Drawing 803-2177917. 3.4 Construction. Construction of the valves shall be as specified in 3.4.1 through 3.4.18. 3.4.1 Walls and bodies. The walls of valve bodies and bonnets shall be curved
40、 surfaces. Flat surfaces shall not be permitted. Ribbing shall be provided as necessary to prevent distortion. Provisions shall be made on type II valves so that the valve body and bonnet may be assembled in one relative pos it ion only. 6 Provided by IHSNot for ResaleNo reproduction or networking p
41、ermitted without license from IHS-,-,-! i.-.- i lS3D(SlI) 3.4.2 Packing. Valves shall be constructed so that the valve stem may be packed when the valve is in the fully opened position (backseated) with the masimum working pressure in the valve. 3.4.3 Flanges. Valves shall have flanged ends. Flanges
42、 shall be in ccordance with MIL-F-20042 for pressure rating and drilling. Drilled holes shall straddle and be equally spaced from the vertical centerline and from each other. Where special drilling is required, flanges may be supplied blank or drilled special as specified (see 6.2.1). 3.4.4 Spot fac
43、ing. Flanges shall be spot faced or finished on the back parallel to the flange face within 1 degree for the bolt heads and nuts. The spot face shall not cut more than 1/32 inch below the minimum plate thickness. Eccentricity of the spot face diameter with the bolt hole shall be minimized to provide
44、 facing for the bolt head. The diameter for spot facing shall be equal to or greater than 110 percent of the bolt head corner to corner dimension. Rims need not be finished provided they are cast smooth and true. 3.4.5 Flow area. When the valve is fully open, there shall be an unobstructed flow. The
45、 area at any point within the valve in the line of flow shall be not less than that of the bore of the valve (see 3.9.1 and 3.9.2). 3.4.6 Disc guide ribs. The valves shall be provided with disc guide ribs in the body which shall maintain alignment of the gate during operation. The ribs shall be accu
46、rately machined unless they are cast smooth and true. 3.4.7 Bonnets. Bonnets for all valves shall be flanged. The bonnets shall be bolted with the bolt studs threaded the full length and fitted with a nut at each end or bolted with headed bolts having a nut at one end. Bonnet flange shape shall be e
47、ither circular or elliptical. 3.4.8 Stuffing boxes. Stuffing boxes shall be of a depth approximating the stuffing box bore and shall have not less than four full rings of square packing. 3.4.9 Threads. Each stem shall be threaded with National ACNE form threads for valve operation in accordance with
48、 FED-STD-H28 or ANSI B1.l. Handwheel hold downthreads shall be in accordance with FED-STD-H28. The valve shall close when facing the handwheel and the handwheel is turned in the clockwise direction. 3.4.10 Valve handwheels. Handwheel sizes shall be in accordance with 3.9.1 and 3.9.2. Tangential forc
49、es shall be not more than the values specified in table III. TABLE III. Maximum allowable tangential force to seat valve based on valve handwheel size. Handwheel diameter (pounds ) ( inches ) Tangential force 2 90 3 98 4 112 5 106 7 Provided by IHSNot for ResaleNo reproduction or networking permitted without license from IHS-,-,-MIL-V-LLBSD 48 979940b 0270231 3 m TABLE III. Maximum allowable tangential force to seat valve based
