1、 MSS SP-104-2012 Wrought Copper Solder-Joint Pressure Fittings 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: standardsmss
2、-hq.org www.mss-hq.org MSS MSS STANDARD PRACTICE SP-104 i This MSS Standard Practice was developed under the consensus of the MSS Technical Committee 201 and the MSS Coordinating Committee. The content of this Standard Practice is the resulting efforts of competent and experienced volunteers to prov
3、ide 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 doe
4、s 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 applicable. MSS has no powe
5、r, 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 indi
6、cated otherwise within this MSS Standard Practice, other standards documents referred 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 shall remain silent on the val
7、idity 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 sha
8、ll 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 constr
9、ued 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 requireme
10、nts. Substantive changes in this 2012 addition 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. Non-toleranced dimensions in this Standard Practice are no
11、minal, and, unless otherwise specified, shall be considered “for reference only”. Excerpts of this Standard Practice may be quoted with permission. Credit lines should read Extracted from MSS SP-104-2012 with permission of the publisher, Manufacturers Standardization Society of the Valve and Fitting
12、s Industry. Reproduction and/or electronic transmission 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 Published: April 1990 Current Ed
13、ition Approved: July 2011 Current Edition Published: March 2012 MSS is a registered trademark of Manufacturers Standardization Society of the Valve and Fittings Industry, Inc. Copyright , 2012 by Manufacturers Standardization Society of the Valve and Fittings Industry, Inc. Printed in U.S.A. MSS STA
14、NDARD PRACTICE SP-104 ii TABLE OF CONTENTS SECTION PAGE 1 SCOPE . 1 2 DESIGN . 1 3 ABBREVIATIONS 1 4 DEFINITIONS . 1 5 SIZE . 1 6 MARKINGS 2 7 MATERIALS . 2 8 LAYING LENGTHS . 2 9 INSPECTION TOLERANCE 2 10 THREADED ENDS . 3 11 DESIGN OF THREADED ENDS . 3 12 ALIGNMENT 3 13 TEST 3 14 GAUGING . 4 TABLE
15、 1 Inspection Tolerance 2 2 Dimensions of Solder-Joint Fittings . 5 A1 Pressure-Temperature Ratings of Solder Joints . 8 FIGURE 1 Method of Designating Laying Lengths of Fittings and Openings of Fittings . 6 ANNEX A Strength of Solder Joints . 8 B Referenced Standards and Applicable Dates . 9 MSS ST
16、ANDARD PRACTICE SP-104 1 WROUGHT COPPER SOLDER-JOINT PRESSURE FITTINGS 1. SCOPE 1.1 This Standard Practice covers seamless wrought-copper fittings in nominal size 1/8 through 8, straight and reducing size, with solder-joint or threaded end connections, and for use with copper water tube per ASTM B88
17、 at the pressures and temperatures shown in Table A1. The fittings in this Standard Practice have dimensions and ratings not covered in ASME B16.22. Included in this Standard Practice are: a) Pressure-temperature ratings b) Abbreviations for end connections c) Size and method of designating openings
18、 and fittings d) Markings e) Materials f) Dimensions and tolerances g) Tests 2. DESIGN 2.1 Rating of Fitting Fittings manufactured to this Standard Practice shall have pressure-temperature ratings that are the lower of either the calculated tube rating (see Section 2.2) or the rating of the joint (s
19、ee Section 2.3). 2.2 Rating of Tube The pressure-temperature rating for ASTM B88 Type “M“ annealed copper water tube, is calculated as follows: mmtDStP8.02= Where: P = working pressure at temperature, psi S = allowable stress at temperature, psi (per ASME B31.1 or ASME B31.9) tm= minimum wall thickn
20、ess, in. (per ASTM B88) D = maximum tube outside diameter, in. 2.3 Rating of Tube The working pressure-temperature rating for a solder joint piping system is dependent not only on fitting and tube strength, but also on the composition of the solder used for the joint. Pressure-temperature ratings fo
21、r solder joints to the dimensions of Table 2 made with typical commercial solders are given in Annex A. 3. ABBREVIATIONS 3.1 The following abbreviations are used to designate the type of fitting end: Symbol Definition C = Solder-joint fittings end made to receive copper tube diameter (female) FTG =
22、Solder-joint fitting end made to copper tube diameter (male) F = Internal (female) American National Standard Taper Pipe Thread (NPT), as per ASME B1.20.1 M = External (male) American National Standard Taper Pipe Thread (NPT) 4. DEFINITIONS 4.1 Out-of-roundness The maximum measured diameter minus mi
23、nimum measured diameter. 4.2 Ovality An elliptical condition associated with out-of-roundness. 5. SIZE 5.1 The sizes of the solder-joint end connections shown in Table 2 shall correspond to standard water tube size as defined in ASTM B88. The sizes of the threaded ends shall correspond to nominal pi
24、pe sizes, as defined in ASME B1.20.1. MSS STANDARD PRACTICE SP-104 2 5.2 Fittings are designated by the size of the openings in the sequence illustrated in Figure 1. 6. MARKINGS 6.1 Each fitting shall be permanently marked with the manufacturers name or trademark in accordance with MSS SP-25. Markin
25、gs may be omitted from any fitting where it may damage soldering surfaces. 7. MATERIALS 7.1 Fittings shall be made from copper alloy UNS designations C10200, C12000, or C12200 for which allowable stresses are found in ASME B31.1 or B31.9. 7.2 Other copper alloys may be used provided they meet the ch
26、emical requirements of 84% minimum copper and 16% maximum zinc, and provided the fittings produced from the copper materials meet all the mechanical and corrosion resistant properties suitable for the end purposes of the fittings. The composition of the copper materials shall contain nothing which w
27、ill inhibit joining to tube or to other fittings. 8. LAYING LENGTHS 8.1 Due to widely varying manufacturing processes, uniform laying length dimensions of fittings cannot be established. Consult the manufacturer for these dimensions. 9. INSPECTION TOLERANCE 9.1 Linear Dimensions An inspection tolera
28、nce, as shown in Table 1, shall be allowed on center-to-shoulder, center-to-center, center-to-threaded end, and shoulder-to-threaded end dimensions on all fittings having female solder (solder cup) ends, and on center-to-solder end and solder end-to-threaded end dimensions on all fittings having mal
29、e solder (fitting) ends. Coupling inspection limits for shoulder-to-shoulder and shoulder-to-end dimensions shall be double those shown in Table 1, except that the minus tolerance applied to dimension “L“ shall not result in a dimension less than 0.06 inch. 9.2 Ovality Maximum ovality shall not exce
30、ed 1% of the maximum diameters shown in Table 2. The average of the maximum and minimum diameters must be within the dimensions shown in the table. TABLE 1 Inspection Tolerance Nominal Size Water Tube and Threads Tolerance, Plus or Minus, (in.) 1/8(a), 1/4, 3/8 0.05 1/2, 5/8, 3/4 0.06 1, 1, 1, 2 0.0
31、8 2, 3, 3 0.11 4 and 5 0.12 6 and 8 0.16 9.3 Minimum Wall Thickness The average of the wall thickness shall not be less than the thickness shown in Table 2 and the wall at any given point shall not be less than 90% of the wall thickness shown in the table. 9.4 Inside Diameter, “O“ The minimum cross-
32、sectional area of the inside diameter through the fitting body shall not be less than the theoretical minimum area defined by diameter “O“ in Table 2. The maximum out-of-roundness of diameter “O“, shall not exceed 3% of the given minimum diameter. For reducer or adapter fittings, the smallest end di
33、ameter shall apply. _ NOTE: (a)Nominal size 1/8 is 1/4 O.D. seamless copper tube for refrigeration service, etc., as listed in ASTM B280. MSS STANDARD PRACTICE SP-104 3 10. THREADED ENDS 10.1 Threading of fitting end connections shall be right-hand, conforming to ASME B1.20.1. They shall be taper th
34、reads (NPT). 10.2 Countersink or Chamfer All internal threads shall be countersunk a distance not less than one-half the pitch of the thread at an angle of approximately 45 degrees with the axis of the thread. All external threads shall be chamfered at an angle of 30 to 45 degrees from the axis, for
35、 the purpose of easier entrance in making a joint and protection of the thread. Countersinking and chamfering shall be concentric with the threads. The length of threads shall be measured to include the countersink or chamfer. 10.3 Threading Tolerances Tapered pipe threads (NPT) shall be checked by
36、use of working plug or ring gauges in either standard or limit types. Gauges shall be threaded on/in hand tight. The reference point for gaging internal product threads depends upon the chamfer diameter. When the internal chamfer diameter exceeds the major diameter of the internal thread, the refere
37、nce point is the last thread scratch on the chamfer cone. Otherwise, when the internal chamfer diameter does not exceed the major diameter of the internal thread, the reference point is the end of the fitting. On the external thread, the reference point shall be flush with the end of the fitting. To
38、lerance for an internal threaded end having an internal shoulder shall be from the gauge reference point (notch) to one turn small. Tolerance for an internal threaded end without shoulder and for an external threaded end shall be from one turn small to one turn large. 11. DESIGN OF THREADED ENDS 11.
39、1 The wrenching section of internal threaded ends shall be polygonal, and the wrenching section of external threaded ends shall be furnished with a polygon or flats, at the manufacturers option. 12. ALIGNMENT 12.1 The maximum allowable deviation in the angular alignment of any opening shall be 0.06
40、in/ft (0.5%). 13. TEST 13.1 When required, these fittings shall be tested with air at a gauge pressure of 60 psi minimum while under water or at a hydrostatic gauge pressure of 250 psi. 14. GAUGING 14.1 Standard Gaging Method of Solder-Joint Ends The standard method of gaging the diameter tolerance
41、for male and female ends shall be by the use of plain plug and ring gauges designed to hold the product within the limits established in Table 2. 14.2 Plug ANSI/ASME B1.20.1-1983 (R2006) Pipe Threads, General Purpose (Inch) B16.22-2001 (R2010) Wrought Copper and Copper Alloy Solder Joint Pressure Fi
42、ttings B31.1-2010 Power Piping B31.9-2011 Building Services Piping ASTM Standard Specification for: B32-08 Solder Metal B88-09 Seamless Copper Water Tube B280-08 Seamless Copper Tube for Air Conditioning and Refrigeration Field Service MSS SP-25-2008 Standard Marking Systems for Valves, Fittings, Fl
43、anges, and Unions The following organizations appear in the above list: ANSI American National Standards Institute, Inc. 25 West 43rdStreet, Fourth Floor New York, NY 10036-7406 ASME American Society of Mechanical Engineers (ASME International) Three Park Avenue New York, NY 10016-5990 ASTM ASTM Int
44、ernational 100 Barr Harbor Drive, P.O. Box C700 West Conshohocken, PA 19428-2959 MSS Manufacturers Standardization Society of the Valve and Fittings Industry, Inc. 127 Park Street, NE Vienna, VA 22180-4602 Listing of MSS Standard Practices TITLE SP-6-2012 Standard Finishes for Contact Faces of Pipe
45、Flanges and Connecting-End Flanges of Valves and Fittings SP-9-2008 Spot Facing for Bronze, Iron and Steel Flanges SP-25-2008 Standard Marking System for Valves, Fittings, Flanges, and Unions SP-42-2009 Corrosion Resistant Gate, Globe, Angle and Check Valves with Flanged and Butt Weld Ends (Classes
46、150, 300 & 600) SP-43-2008 Wrought and Fabricated Butt-Welding Fittings for Low Pressure, Corrosion Resistant Applications (Incl. 2010 Errata Sheet) SP-44-2010 Steel Pipeline Flanges (incl. 2011 Errata Sheet) SP-45-2003 (R 2008) Bypass and Drain Connections SP-51-2007 Class 150LW Corrosion Resistant
47、 Flanges and Cast Flanged Fittings SP-53-1999 (R 2007) Quality Standard for Steel Castings and Forgings for Valves, Flanges, and Fittings and Other Piping Components Magnetic Particle Examination Method SP-54-1999 (R 2007) Quality Standard for Steel Castings and Forgings for Valves, Flanges, and Fit
48、tings 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 and Su
49、pports Materials, Design, Manufacture, Selection, Application, and Installation (incorporates content of SP-69, 77, 89, and 90) (ANSI-approved American National Standard) SP-60-2004 Connecting Flange Joint between Tapping Sleeves and Tapping Valves SP-61-2009 Pressure Testing of Valves SP-65-2008 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
