1、 MSS SP-145-2013 Metal Ball Valves for Low Pressure/ Low Temperature Plumbing Applications 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) 2
2、81-6671 E-mail: standardsmss-hq.org MSS www.mss-hq.org MSS STANDARD PRACTICE SP-145 This MSS Standard Practice was developed under the consensus of the MSS Technical Committee 401 and the MSS Coordinating Committee. The content of this Standard Practice is the resulting efforts of competent and expe
3、rienced volunteers to provide 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
4、 MSS Standard Practice does not 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 a
5、pplicable. MSS has no power, 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 t
6、he statement. “Unless indicated 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 B). This Standard Practice sh
7、all remain silent on the validity 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 c
8、onnection therewith. MSS shall 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, figure
9、s, and references are construed 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
10、 include mandatory requirements. Excerpts of this Standard Practice may be quoted with permission. Credit lines should read Extracted from MSS SP-145-2013 with permission of the publisher, Manufacturers Standardization Society of the Valve and Fittings Industry. Reproduction and/or electronic transm
11、ission or dissemination is prohibited under copyright convention unless written permission is granted by the Manufacturers Standardization Society of the Valve and Fittings Industry Inc. All rights reserved. Originally Approved: August 2012 (Updated March 2013) Originally Published: May 2013 MSS is
12、a registered trademark of Manufacturers Standardization Society of the Valve and Fittings Industry, Inc. Copyright 2013 by Manufacturers Standardization Society of the Valve and Fittings Industry, Inc. Printed in U.S.A. i MSS STANDARD PRACTICE SP-145 TABLE OF CONTENTS SECTION PAGE 1 SCOPE . 1 2 PRES
13、SURE-TEMPERATURE RATINGS . 1 3 MATERIALS . 1 4 DESIGN . 2 5 DIMENSIONS . 3 6 MARKING . 3 7 TESTING . 3 TABLE 1 Port Sizes for Ball Valves 5 2 Shell and Seat Test Duration (Visual Test Methods) . 5 FIGURE A1 Threaded . 6 A2 Solder . 6 A3 Press . 7 A4 PEX . 7 ANNEX A Typical Design and Nomenclature fo
14、r Ball Valves 6 B Referenced Standards and Applicable Dates 8 ii MSS STANDARD PRACTICE SP-145 1. SCOPE 1.1 General 1.1.1 This Standard Practice establishes requirements for ball valves with CWP ratings. This Standard Practice provides requirements for the following: a) Pressure-Temperature Ratings b
15、) Materials c) Design d) Dimensions e) Marking f) Testing 1.2 References 1.2.1 Standards and specifications adopted by reference in this Standard Practice and names and addresses of the sponsoring organizations are shown in Annex B. It is not considered practical to refer to a specific edition of ea
16、ch of the standards and specifications in the individual references. Instead, the specific edition references are included in Annex B. A product made in conformance with the edition reference applicable during the time of manufacture, and in all other respects conforming to this Standard Practice, w
17、ill be considered to be in conformance even though the edition reference may be changed in a subsequent revision of this Standard Practice. 1.3 Description 1.3.1 The term ball valve as used in this Standard Practice refers to a valve whose closure member is spherical and rotates 90 between full open
18、 and full closed. Examples of typical designs and the names of the basic parts are shown in Annex A. NOTE: The valve sketches shown in Figures A1 through A4 are for the purpose of illustration and nomenclature only and do not represent or endorse any manufacturers product. 2. PRESSURE-TEMPERATURE RA
19、TINGS 2.1 Basis of Rating The pressure-temperature ratings for assembled valves shall be determined by the material of the body, seats, stem seals, end connections, or any other component or type of construction that would be restrictive. The minimum rated temperature shall be 200 F. Manufacturers s
20、hould be consulted for exact ratings applicable for a particular material or type. 2.2 Cold Working Pressure (CWP) 2.2.1 The minimum cold working pressure shall be 125 psi. 2.2.2 The cold working pressure rating of the valve shell and components is the maximum allowable non-shock pressure at 100 F.
21、2.2.3 The maximum working pressure at any other temperature shall not exceed the cold working pressure rating. 3. MATERIALS 3.1 The valve pressure boundary parts and bolts shall be made from metals that have the allowable stress established for the temperature range for which the valve is designed.
22、Materials shall be made to ASTM or other internationally recognized standards for which mechanical properties and chemical composition data are available. 3.2 All wetted parts shall be constructed of materials such that the assembled valve will meet the requirements of NSF 61, Section 8. 3.3 Preferr
23、ed bolting materials are as specified in ASME B16.34 Table 1, Group 4. If non-listed materials are used, the valve manufacturer shall be prepared to certify that the products are at least equally suitable for the intended use. METAL BALL VALVES FOR LOW PRESSURE/LOW TEMPERATURE PLUMBING APPLICATIONS
24、1 MSS STANDARD PRACTICE SP-145 4. DESIGN 4.1 General 4.1.1 The valve shall be of substantial construction to resist permanent distortion under normal service conditions and shall be free of imperfections and defects, which may be injurious to the performance of the valve. 4.1.2 The valve shall be de
25、signed such as to provide against detrimental distortion, under hydrostatic test conditions, assembly stresses, and closing stresses. 4.2 Joints 4.2.1 The design of the valve shall be such as to provide against detrimental distortion under hydrostatic test conditions, assembly stresses, closing stre
26、sses, pipe reaction stresses, or when rated pressure is applied across a closed valve. 4.2.2 Bolting shall be threaded in accordance with ASME B1.1. 4.2.3 Threaded body joints exposed to piping loads shall satisfy the following thread shear area requirements: P(Ag/As) .47Sa Where: P = Valve cold wor
27、king pressure, psi. Ag = Area bounded by the effective outside periphery of a gasket or o-ring, or other seal effective periphery, except that in the case of a ring-joint, the bounded area is defined by the pitch diameter of the ring, square inches. As = Total effective thread shear area, square inc
28、hes. Sa = Allowable minimum body/bonnet stress, from ASME Boiler ANSI/ASME A112.4.14-2004 (R2010) Manually Operated, Quarter-Turn Shutoff Valves for Use in Plumbing Systems B1.1-2003 (R2008) Unified Inch Screw Threads (UN and UNR Thread Form) B1.20.1-1983 (R2006) Pipe Threads, General Purpose (Inch)
29、 B16.18-2012 Cast Copper Alloy Solder Joint Pressure Fittings B16.26-2011 Cast Copper Alloy Fittings for Flared Copper Tubes B16.34-2013 Valves Flanged, Threaded and Welding End BPVC-VIII-Div.1-2013 Boiler ANSI/ASSE 1061-2011 Performance Requirements for Push-Fit Fittings (Plumbing) ASTM F1807-12 St
30、andard Specification for Metal Insert Fittings Utilizing a Copper Crimp Ring for SDR9 Cross-linked Polyethylene (PEX) Tubing and SDR9 Polyethylene of Raised Temperature (PE-RT) Tubing F1960-12 Standard Specification for Cold Expansion Fittings with PEX Reinforcing Rings for Use with Cross-linked Pol
31、yethylene (PEX) Tubing AWWA; ANSI/AWWA C606-11 Grooved and Shouldered Joints IAPMO R NSF/ANSI 61-2012 Drinking Water System Components Health Effects 8 MSS STANDARD PRACTICE SP-145 ANNEX B (Continued) Referenced Standards and Applicable Dates The following organizations appear on the previous page o
32、f this Annex. ANSI American National Standards Institute, Inc. 25 West 43rd Street, Fourth Floor New York, NY 10036-7406 ASME American Society of Mechanical Engineers (ASME International) Two Park Avenue New York, NY 10016-5990 ASSE American Society of Sanitary Engineering 901 Canterbury Road, Suite
33、 A Westlake, OH 44145-1480 ASTM ASTM International 100 Barr Harbor Drive, P.O. Box C-700 West Conshohocken, PA 19428-2959 AWWA American Water Works Association 6666 West Quincy Avenue Denver, CO 80235-3098 IAPMO International Association of Plumbing and Mechanical Officials 5001 E. Philadelphia Stre
34、et Ontario, CA 91761-2816 MSS Manufacturers Standardization Society of the Valve and Fittings Industry, Inc. 127 Park Street, NE Vienna, VA 22180-4602 NSF NSF International 789 North Dixboro Road, P.O. Box 130140 Ann Arbor, MI 48113-0140 9 Listing of MSS Standard Practices (as of May, 2013) TITLE SP
35、-6-2012 Standard Finishes for Contact Faces of Pipe Flanges and Connecting-End Flanges of Valves and Fittings SP-9-2013 Spot Facing for Bronze, Iron, and Steel Flanges SP-25-2008 Standard Marking System for Valves, Fittings, Flanges, and Unions SP-42-2013 Corrosion-Resistant Gate, Globe, Angle, and
36、Check Valves with Flanged and Butt Weld Ends (Classes 150, 300 & 600) SP-43-2013 Wrought and Fabricated Butt-Welding Fittings for Low Pressure, Corrosion Resistant Applications SP-44-2010 Steel Pipeline Flanges (incl. 2011 Errata Sheet) SP-45-2003 (R 2008) Bypass and Drain Connections SP-51-2012 Cla
37、ss 150LW Corrosion Resistant Flanges and Cast Flanged Fittings SP-53-2012 Quality Standard for Steel Castings and Forgings for Valves, Flanges, Fittings, and Other Piping Components Magnetic Particle Examination Method SP-54-2013 Quality Standard for Steel Castings and Forgings for Valves, Flanges,
38、Fittings, and Other Piping Components Radiographic Examination Method SP-55-2011 Quality Standard for Steel Castings for Valves, Flanges, Fittings, and Other Piping Components Visual Method for Evaluation of Surface Irregularities (ANSI-approved American National Standard) SP-58-2009 Pipe Hangers an
39、d Supports Materials, Design, Manufacture, Selection, Application, and Installation (incorporates content of SP-69, 77, 89, and 90) (ANSI-approved American National Standard) SP-60-2012 Connecting Flange Joints between Tapping Sleeves and Tapping Valves SP-61-2013 Pressure Testing of Valves SP-65-20
40、12 High Pressure Chemical Industry Flanges and Threaded Stubs for Use with Lens Gaskets SP-67-2011 Butterfly Valves SP-68-2011 High Pressure Butterfly Valves with Offset Design SP-69-2003 Pipe Hangers and Supports Selection and Application (ANSI-approved American National Standard) SP-70-2011 Gray I
41、ron Gate Valves, Flanged and Threaded Ends SP-71-2011 Gray Iron Swing Check Valves, Flanged and Threaded Ends (incl. 2013 Errata Sheet) SP-72-2010a Ball Valves with Flanged or Butt-Welding Ends for General Service SP-75-2008 Specification for High-Test, Wrought, Butt-Welding Fittings SP-78-2011 Gray
42、 Iron Plug Valves, Flanged and Threaded Ends SP-79-2011 Socket Welding Reducer Inserts SP-80-2013 Bronze Gate, Globe, Angle, and Check Valves SP-81-2013 Stainless-Steel or Stainless-Steel-Lined, Bonnetless, Knife Gate Valves with Flanged Ends SP-83-2006 Class 3000 Steel Pipe Unions Socket Welding an
43、d Threaded SP-85-2011 Gray Iron Globe & Angle Valves, Flanged and Threaded Ends SP-86-2009 Guidelines for Metric Data in Standards for Valves, Flanges, Fittings, and Actuators (Incl. 2011 Errata Sheet) SP-87-1991 (R 1996 Reinstated 2011) Factory-Made Butt-Welding Fittings for Class I Nuclear Piping
44、Applications SP-88-2010 Diaphragm Valves SP-91-2009 Guidelines for Manual Operation of Valves SP-92-2012 MSS Valve User Guide SP-93-2008 Quality Standard for Steel Castings and Forgings for Valves, Flanges, Fittings, and Other Piping Components Liquid Penetrant Examination Method SP-94-2008 Quality
45、Standard for Ferritic and Martensitic Steel Castings for Valves, Flanges, Fittings, and Other Piping Components Ultrasonic Examination Method SP-95-2006 Swage(d) Nipples and Bull Plugs SP-96-2011 Guidelines on Terminology for Valves and Fittings SP-97-2012 Integrally Reinforced Forged Branch Outlet
46、Fittings Socket Welding, Threaded, and Buttwelding Ends SP-98-2012 Protective Coatings for the Interior of Valves, Hydrants, and Fittings SP-99-2010 Instrument Valves SP-100-2009 Qualification Requirements for Elastomer Diaphragms for Nuclear Service Diaphragm Valves SP-101-1989 (R 2001) Part-Turn V
47、alve Actuator Attachment Flange and Driving Component Dimensions and Performance Characteristics SP-102-1989 (R 2001) Multi-Turn Valve Actuator Attachment Flange and Driving Component Dimensions and Performance Characteristics SP-104-2012 Wrought Copper Solder-Joint Pressure Fittings SP-105-2010 Ins
48、trument Valves for Code Applications SP-106-2012 Cast Copper Alloy Flanges and Flanged Fittings: Class 125, 150, and 300 SP-108-2012 Resilient-Seated Cast Iron Eccentric Plug Valves SP-109-2012 Weld-Fabricated Copper Solder-Joint Pressure Fittings (incl. 2012 Errata Sheet) SP-110-2010 Ball Valves Th
49、readed, Socket-Welding, Solder Joint, Grooved and Flared Ends (incl. 2010 Errata Sheet) SP-111-2012 Gray-Iron and Ductile-Iron Tapping Sleeves SP-112-2010 Quality Standard for Evaluation of Cast Surface Finishes Visual and Tactile Method. This SP must be used with a 10-surface, three dimensional Cast Surface Comparator, which is a necessary part of the standard. Additional Comparators available separately. SP-113-2012 Connecting Joints between Tapping Machines and Tapping Valves SP-114-2007 Corrosion Resistant Pipe Fittings Threaded and
