1、MSS SP-131-2017 Metallic Manually Operated Gas Distribution Valves Standard Practice Developed and Approved by the Manufacturers Standardization Society of the Valve and Fittings Industry, Inc. 127 Park Street, NE Vienna, Virginia 22180-4602 Phone: (703) 281-6613 Fax: (703) 281-6671 E-mail: standard
2、smsshq.org www.msshq.org MSS STANDARD PRACTICE SP-131i This MSS Standard Practice was developed under the consensus of the MSS Technical Committee 501 and the MSS Coordinating Committee. The content of this Standard Practice is the resulting efforts of competent and experienced volunteers to provide
3、 an effective, clear, and non-exclusive standard that will benefit the industry as a whole. This MSS Standard Practice describes minimal requirements and is intended as a basis for common practice by the manufacturer, the user, and the general public. The existence of an MSS Standard Practice does n
4、ot in itself preclude the manufacture, sale, or use of products not conforming to the Standard Practice. Mandatory conformance to this Standard Practice is established only by reference in other documents such as a code, specification, sales contract, or public law, as applicable. MSS has no power,
5、nor does it undertake, to enforce or certify compliance with this document. Any certification or other statement of compliance with the requirements of this Standard Practice shall not be attributable to MSS and is solely the responsibility of the certifier or maker of the statement. “Unless indicat
6、ed otherwise within this MSS Standard Practice, other standards documents referenced to herein are identified by the date of issue that was applicable to this Standard Practice at the date of approval of this MSS Standard Practice (see Annex A). This Standard Practice shall remain silent on the vali
7、dity of those other standards of prior or subsequent dates of issue even though applicable provisions may not have changed.” By publication of this Standard Practice, no position is taken with respect to the validity of any potential claim(s) or of any patent rights in connection therewith. MSS shal
8、l not be held responsible for identifying any patent rights. Users are expressly advised that determination of patent rights and the risk of infringement of such rights are entirely their responsibility. In this Standard Practice, all text, notes, annexes, tables, figures, and references are constru
9、ed to be essential to the understanding of the message of the standard, and are considered normative unless indicated as “supplemental”. All appendices, if included, that appear in this document are construed as “supplemental”. Note that supplemental information does not include mandatory requiremen
10、ts. Substantive changes in this 2017 edition are “flagged” by parallel bars as shown on the margins of this paragraph. The specific detail of the change may be determined by comparing the material flagged with that in the previous edition. U.S. customary units in this Standard Practice are the stand
11、ard; SI (metric) units are for reference only unless no U.S. customary units are provided. Non-toleranced dimensions in this Standard Practice are nominal unless otherwise specified. Excerpts of this Standard Practice may be quoted with permission. Credit lines should read Extracted from MSS SP-131-
12、2017 with permission of the publisher, Manufacturers Standardization Society of the Valve and Fittings Industry. Reproduction and/or electronic transmission or dissemination is prohibited under copyright convention unless written permission is granted by the Manufacturers Standardization Society of
13、the Valve and Fittings Industry Inc. All rights reserved. Originally Approved: September 2003 Originally Published: November 2004 Current Edition Approved: July 2016 Current Edition Published: January 2017 MSS is a registered trademark of Manufacturers Standardization Society of the Valve and Fittin
14、gs Industry, Inc. Copyright , 2017 by Manufacturers Standardization Society of the Valve and Fittings Industry, Inc. Printed in U.S.A. MSS STANDARD PRACTICE SP-131ii TABLE OF CONTENTS SECTION PAGE PURPOSE 1 1 SCOPE . 1 2 DEFINITIONS AND ABBREVIATIONS 1 3 DOCUMENTATION 1 4 CONSTRUCTION . 1 5 DESIGN Q
15、UALIFICATION REQUIREMENTS . 4 6 PRODUCTION TESTING REQUIREMENTS 7 7 PACKAGING AND SHIPPING . 8 8 INSTALLATION INSTRUCTIONS . 8 TABLE 1 Maximum Operating Torque . 6 2 Minimum Operating Torque 6 3 Minimum Flow Capacity and Flow Coefficient 7 FIGURE 1 Two (2) Inch Square Operating Nut 4 ANNEX A Referen
16、ced Standards and Applicable Dates . 9 MSS STANDARD PRACTICE SP-1311 METALLIC MANUALLY OPERATED GAS DISTRIBUTION VALVES PURPOSE To provide a Standard Practice for metallic valves used in fuel gas piping systems which are manually operated both above and below ground. 1. SCOPE 1.1 This Standard Pract
17、ice covers Metallic Gas Distribution Valves designed for operation at any pressure from 0 psig to a maximum of 285 psig, at operating temperatures ranging from -20 F to 150 F, and sizes from NPS 1/2 to NPS 12. 2. DEFINITIONS AND ABBREVIATIONS 2.1 Gas Distribution System: The pipeline used for the de
18、livery of gas. 2.2 cc/sec: The abbreviation represents standard cubic centimeters per second. Also expressed as cm3/s. 2.3 Within this Standard Practice, definitions and abbreviations contained in MSS SP-96 shall also apply. 3. DOCUMENTATION 3.1 If required by the purchasers specifications, the manu
19、facturer shall furnish the following information: 3.1.1 Catalog Data or Installation Instructions The manufacturer shall supply catalog data, including illustrations and a parts bill that identifies the materials of construction list. This information shall provide sufficient detail to serve as a gu
20、ide for operation and for disassembly and assembly of the valve if servicing is required, and for ordering of spare parts. 3.1.2 Customer Approval Drawings When specified on the purchase order, the manufacturer shall submit to the purchaser for approval one set of drawings showing the installation d
21、imensions, construction details, materials of construction used for the components of the valve and testing parameters. All production valves furnished shall be in accordance with these drawings as approved by the purchaser. 3.1.3 Certification When specified on the purchase order, the manufacturer
22、shall furnish a letter or statement of certification stating that the products and materials used in their construction conform to the applicable requirements of this Standard Practice, other applicable specifications, and that all required tests specified herein have been performed and all requirem
23、ents have been met. 4. CONSTRUCTION 4.1 General All valves constructed in accordance with this Standard Practice shall provide gas tightness, safety, and reliability for the intended application. All materials used in valves produced under this Standard Practice shall conform to the requirements sti
24、pulated in the following sections and shall be suitable for the particular application. Corrosion considerations should be addressed during the materials selection process for valve components, and should be suitable for the anticipated service conditions of completed valve assemblies. Steel valves
25、must be constructed with steel bodies, covers, and bonnets. MSS STANDARD PRACTICE SP-1312 4.2 Castings All castings shall be produced without defects which will impair their serviceability. 4.2.1 Carbon Steel The requirements of ASTM A216 or ASTM A487 and ASTM A703 shall be met, as a minimum. The on
26、ly acceptable repair method for steel castings used for pressure containment shall be a weld repair procedure meeting the requirements of API 1104 and ASTM A488, including any necessary heat treatment. 4.2.2 Stainless Steel The requirements of ASTM A351 and ASTM A703 shall be met, as a minimum. The
27、only acceptable repair method for stainless steel castings used for pressure containment shall be a weld repair procedure meeting the requirements of API 1104 and ASTM A488, including any necessary heat treatment. 4.2.3 Iron The requirements of ASTM A126 for gray iron; or ASTM A395 or ASTM A536 for
28、ductile iron; or ASTM A47 or ASTM A197 for malleable iron, shall be met, as a minimum. Plugging, welding, impregnating or other repairing of any defects shall not be allowed for pressure containment castings. 4.2.4 Copper Alloy The requirements of ASTM B16 or ASTM B584 shall be met, as a minimum. Pl
29、ugging, welding, brazing, impregnating, or other repairing of any defects shall not be allowed for pressure containment castings. 4.3 Forgings 4.3.1 Steel Forgings Shall be produced to the requirements of ASTM A105. 4.3.2 Stainless Steel Forgings Shall be produced to the requirements of ASTM A473. 4
30、.3.3 Copper Alloy Forgings Shall be produced in accordance with ASTM B124. 4.4 Fabricated ANSI/API 6D-2014 Specification for Pipeline and Piping Valves; w/ Addendum 1 (2015), Errata 1 (2014), Errata 2 (2014), Errata 3 (2015), Errata 4 (2015), Errata 5 (2015), and Errata 6 (2015) 6FA-1999 (R2011) Spe
31、cification for Fire Test for Valves; w/Errata 1 (2006), Errata 2 (2008) 607-2010 Fire Test for Quarter-Turn Valves and Valves Equipped with Nonmetallic Seats 1104-2013 Welding of Pipelines and Related Facilities; w/ Addendum 1 (2014), Errata 1 (2013), Errata 2 (2014), and Errata 3 (2014) ASME; ANSI/
32、ASME B1.20.1-2013 Pipe Threads, General Purpose (Inch) B1.20.3-1976 (R2013) Dryseal Pipe Threads (Inch) B16.1-2015 Gray Iron Pipe Flanges and Flanged Fittings: Classes 25, 125, and 250 B16.5-2013 Pipe Flanges and Flange Fittings: NPS 1/2 through NPS 24 Metric/Inch Standard B16.10-2009 Face-to-Face a
33、nd End-to-End Dimensions of Valves B16.25-2012 Buttwelding Ends B16.33-2012 Manually Operated Metallic Gas Valves for Use in Gas Piping Systems up to 175 psi (Sizes NPS 1/2 NPS 2) B16.34-2013 Valves Flanged, Threaded, and Welding End B16.38-2012 Large Metallic Valves for Gas Distribution: Manual Ope
34、rated, NPS 21/2 (DN 65) to NPS 12 (DN 300), 125 psig (8.6 bar) Maximum ASTM Standard Specification for: A20/A20M-15 General Requirements for Steel Plates for Pressure Vessels A36/A36M-14 Carbon Structural Steel A47/A47M-99(2014) Ferritic Malleable Iron Castings A53/A53M-12 Pipe, Steel, Black and Hot
35、-Dipped, Zinc-Coated, Welded, and Seamless A105/A105M-14 Carbon Steel Forgings for Piping Applications A126-04(2014) Gray Iron Castings for Valves, Flanges, and Pipe Fittings A193/A193M-16 Alloy-Steel and Stainless Steel Bolting Materials for High Temperature or High Pressure Service and Other Speci
36、al Purpose Applications A197/A197M-00(2015) Cupola Malleable Iron A216/A216M-16 Steel Castings, Carbon, Suitable for Fusion Welding, for High-Temperature Service A240/A240M-15b Chromium and Chromium-Nickel Stainless Steel Plate, Sheet, and Strip for Pressure Vessels and for General Applications A351
37、/A351M-15 Castings, Austenitic, for Pressure-Containing Parts A395/A395M-99(2014) Ferritic Ductile Iron Pressure-Retaining Castings for Use at Elevated Temperatures A473-15 Stainless Steel Forgings A479/A479M-16 Stainless Steel Bars and Shapes for Use in Boilers and Other Pressure Vessels A487/A487M
38、-14 Steel Castings Suitable for Pressure Service A488/A488M-12 Steel Castings, Welding, Qualification of Procedures and Personnel MSS STANDARD PRACTICE SP-13110 ANNEX A (Continued) Referenced Standards and Applicable Dates This Annex is an integral part of this Standard Practice and is placed after
39、the main text for convenience. Standard Name Description ASTM Standard Specification for: A513/A513M-15 Electric-Resistance-Welded Carbon and Alloy Steel Mechanical Tubing A536-84(2014) Ductile Iron Castings A703/A703M-15 Steel Castings, General Requirements, for Pressure-Containing Parts B16/B16M-1
40、0(2015) Free-Cutting Brass Rod, Bar and Shapes for Use in Screw Machines B124/B124M-15 Copper and Copper Alloy Forging Rod, Bar, and Shapes B584-14 Copper Alloy Sand Castings for General Applications D2513-14e1 Polyethylene (PE) Gas Pressure Pipe, Tubing, and Fittings D2517-06(2011) Reinforced Epoxy
41、 Resin Gas Pressure Pipe and Fittings Standard Classification System for: D2000-12 Rubber Products in Automotive Applications ISA; ANSI/ISA 75.02.01-2008 Control Valve Capacity Test Procedure MSS; ANSI/MSS SP-6-2012 Standard Finishes for Contact Faces of Pipe Flanges and Connecting-End Flanges of Va
42、lves and Fittings SP-9-2013 Spot Facing for Bronze, Iron, and Steel Flanges SP-25-2013 Standard Marking System for Valves, Fittings, Flanges, and Unions SP-61-2013 Pressure Testing of Valves SP-67-2016 Butterfly Valves SP-72-2010a Ball Valves with Flanged or Butt-Welding Ends for General Service SP-
43、96-2011 Guidelines on Terminology for Valves and Fittings MSS STANDARD PRACTICE SP-13111 ANNEX A (Continued) Referenced Standards and Applicable Dates This Annex is an integral part of this Standard Practice and is placed after the main text for convenience. Publications of the following organizatio
44、ns appear on the previous page in this Annex: ANSI American National Standards Institute 25 West 43rdStreet, Fourth Floor New York, NY 10036-7406 API American Petroleum Institute 1220 L Street, N.W. Washington, DC 20005-4070 ASME American Society of Mechanical Engineers (ASME International) Two Park
45、 Avenue New York, NY 10016-5990 ASTM ASTM International 100 Barr Harbor Drive, P.O. Box C700 West Conshohocken, PA 19428-2959 ISA International Society of Automation 67 TW Alexander Drive Research Triangle Park, NC 27709-0185 MSS Manufacturers Standardization Society of the Valve and Fittings Indust
46、ry, Inc. 127 Park Street, NE Vienna, VA 22180-4602 Purchase or View a Full Listing of MSS Standards at: http:/msshq.org/Store/PriceList.cfm MSS Standard Practices (SPs) related to or referenced in this publication: MSS SP-6 Standard Finishes for Contact Faces of Pipe Flanges and Connecting-End Flang
47、es of Valves and Fittings MSS SP-9 Spot Facing for Bronze, Iron, and Steel Flanges ANSI/MSS SP-25 Standard Marking System for Valves, Fittings, Flanges, and UnionsMSS SP-61 Pressure Testing of Valves MSS SP-67 Butterfly Valves MSS SP-72 Ball Valves with Flanged or Butt-Welding Ends for General Servi
48、ce ANSI/MSS SP-96 Guidelines on Terminology for Valves and Fittings American National Standards Published by MSS, an ANSI-accredited Standards Developer:ANSI/MSS SP-25 Standard Marking System for Valves, Fittings, Flanges, and UnionsANSI/MSS SP-44 Steel Pipeline FlangesANSI/MSS SP-55 Quality Standar
49、d for Steel Castings for Valves, Flanges, Fittings, and Other Piping Components Visual Method for Evaluation of Surface IrregularitiesANSI/MSS SP-58 Pipe Hangers and Supports Materials, Design, Manufacture, Selection, Application, and InstallationANSI/MSS SP-96 Guidelines on Terminology for Valves and Fittings ANSI/MSS SP-114 Corrosion Resistant Pipe Fittings Threaded and Socket Welding Class 150 and 1000ANSI/MSS SP-134 Valves for Cryogenic Service, including Requirements for Body/Bonnet ExtensionsANSI/MSS SP-135 High Pressure Knife Gate Valves ANSI/MSS SP-13
