1、 MSS SP-80-2013 Bronze Gate, Globe, Angle, and Check 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: standardsmss-hq
2、.org www.mss-hq.org MSS MSS STANDARD PRACTICE SP-80i This MSS Standard Practice was developed under the consensus of the MSS Technical Committee 203 and the MSS Coordinating Committee. The content of this Standard Practice is the resulting efforts of competent and experienced volunteers to provide a
3、n 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 not
4、 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, no
5、r 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 indicated
6、 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 C). This Standard Practice shall remain silent on the validi
7、ty 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 shall
8、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 construed
9、 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 requirements
10、. U.S. customary units in this Standard Practice are the standard; (SI) metric units are for reference only. Substantive changes in this 2013 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 materia
11、l flagged with that in the previous edition. Excerpts of this Standard Practice may be quoted with permission. Credit lines should read Extracted from MSS SP-80-2013 with permission of the publisher, Manufacturers Standardization Society of the Valve and Fittings Industry. Reproduction and/or electr
12、onic 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: November 1974 Current Edition Approved: August 2012/Updated
13、 March 2013 Current Edition Published: March 2013 MSS is 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. MSS STANDARD PRACTICE S
14、P-80ii TABLE OF CONTENTSSECTION PAGEPURPOSE 1 1 SCOPE AND VALVE TYPES 1 2 PRESSURE-TEMPERATURE RATINGS . 1 3 MATERIALS . 2 4 DESIGN . 2 5 MARKINGS . 4 6 TOLERANCE 5 7 INSPECTION AND TESTING . 5 TABLE 1 Pressure-Temperature Ratings . 6 2 List of Material Specifications . 7 3 Minimum Length and Depth
15、of Thread . 10 4 Bronze Gate Valves Diameter of Stem . 11 5 Bronze Globe and Angle Valves Diameter of Stem . 11 6 Bronze Gate Valves Diameter of Handwheel . 12 7 Bronze Globe and Angle Valves Diameter of Handwheel . 12 8 Shell Test Threaded and Solder-End Valves . 13 9 Shell Test Flanged-End Valves
16、. 13 10 Seat Test Threaded and Solder-End Valves 14 11 Seat Test Flanged-End Valves 14 A1 Pressure-Temperature Limitations . 15 X1-1 Pressure-Temperature Limitations . 25 X1-2 Pressure-Temperature Ratings . 26 X1-3 Minimum Length and Depth of Thread . 27 X1-4 Bronze Gate Valves Diameter of Stem . 28
17、 X1-5 Bronze Globe and Angle Valves Diameter of Stem . 28 X1-6 Bronze Gate Valves Diameter of Handwheel . 29 X1-7 Bronze Globe and Angle Valves Diameter of Handwheel . 29 X1-8 Shell Test Threaded and Solder-End Valves . 30 X1-9 Shell Test Flanged-End Valves . 30 X1-10 Seat Test Threaded and Solder-E
18、nd Valves 30 X1-11 Seat Test Flanged-End Valves 30 FIGURE B1 Gate Valve Type 1A: Solid Wedge, Non-Rising Stem, External Stuffing Box . 16 B2 Gate Valve Type 1B: Solid Wedge, Non-Rising Stem, Internal Retaining Nut . 16 B3 Gate Valve Type 2: Solid Wedge, Inside Screw, Rising Stem . 17 B4 Gate Valve T
19、ype 3: Split Wedge (Double Disc), Inside Screw, Rising Stem 18 B5 Gate Valve Type 4: Double Disc, Parallel Seat, Inside Screw, Rising Stem 18 B6 Globe and Angle Valves Type 1: Metallic Disc, Integral Seat . 19 B7 Globe and Angle Valves Type 2: Non-Metallic Disc, Integral Seat . 19 B8 Globe and Angle
20、 Valves Type 3: Metallic Disc, Removable Seat . 20 B9 Check Valve Type 1: Horizontal Lift Check, Metallic Disc-to-Metallic Seat 21 B10 Check Valve Type 1: Angle Lift Check, Metallic Disc-to-Metallic Seat . 21 B11 Check Valve Type 2: Horizontal and Angle Lift Check, Non-Metallic Disc-to-Metallic Seat
21、 22 B12 Check Valve Type 2: Vertical Lift Check, Non-Metallic Disc-to-Metallic Seat 22 B13 Check Valve Type 3: Swing Check, Metallic Disc-to-Metallic Seat . 23 B14 Check Valve Type 4: Swing Check, Non-Metallic Disc-to-Metallic Seat . 23 MSS STANDARD PRACTICE SP-80iii TABLE OF CONTENTS (Continued)SEC
22、TION PAGE ANNEX A Strength of Solder Joints 15 B Valve Types 16 C Referenced Standards and Applicable Dates . 24 APPENDIX X1 (SI) Metric References . 25 MSS STANDARD PRACTICE SP-801 BRONZE GATE, GLOBE, ANGLE, AND CHECK VALVES PURPOSE This MSS Standard Practice establishes requirements for bronze gat
23、e, globe, angle, and check valves in Classes 125 (PN 20), 150 (PN 20), 200, 300 (PN 50) and 350 for threaded and solder ends and Classes 150 (PN 20) and 300 (PN 50) for flanged ends. Pressures in this Standard Practice are expressed as gauge pressure in pounds per square inch (Kilopascals). Hereafte
24、r the pressure will appear as psi (kPa). 1. SCOPE AND VALVE TYPES 1.1 Scope This Standard Practice establishes requirements for bronze gate, globe, angle, and check valves for general purpose services and provides requirements for the following: a) Pressure-Temperature Ratings b) Materials c) End Co
25、nnections (Design) d) Dimensions (Design) e) Markings f) Inspection and Testing 1.2 Valve Types 1.2.1 Gate Valves a) Type 1A Solid Wedge, Non-Rising Stem (NRS), External Stuffing Box for Stem Retention (see Figure B1, Annex B) b) Type 1B Solid Wedge, Non-Rising Stem (NRS), Internal Stem Retaining Nu
26、t for Stem Retention (see Figure B2, Annex B) c) Type 2 Solid Wedge, Inside Screw, Rising Stem (ISRS) (see Figure B3, Annex B) d) Type 3 Split Wedge (Double Disc), Inside Screw, Rising Stem (ISRS) (see Figure B4, Annex B) e) Type 4 Double Disc, Parallel Seat, Inside Screw, Rising Stem (ISRS) (see Fi
27、gure B5, Annex B) 1.2.2 Globe and Angle Valves a) Type 1 Metallic Disc, Integral Seat (see Figure B6, Annex B) b) Type 2 Non-Metallic Disc, Integral Seat (see Figure B7, Annex B) c) Type 3 Metallic Disc, Removable Seat (see Figure B8, Annex B) 1.2.3 Check Valves a) Type 1 Horizontal and Angle Lift C
28、heck, Metallic Disc-to-Metallic Seat (see Figures B9 and B10, Annex B) b) Type 2 Horizontal, Angle, and Vertical Lift Check, Non-Metallic Disc-to-Metallic Seat (see Figures B11 and B12, Annex B) c) Type 3 Swing Check, Metallic Disc-to-Metallic Seat (see Figure B13, Annex B) d) Type 4 Swing Check, No
29、n-Metallic Disc-to-Metallic Seat (see Figure B14, Annex B) 1.3 Nominal Pipe Sizes (Nominal Diameter) a) Threaded Ends NPS 1/8 to 3 (DN 6 to 80) b) Solder Ends NPS 1/4 to 3 (DN 8 to 80) c) Flanged Ends NPS 1/2 to 3 (DN 15 to 80) 2. PRESSURE-TEMPERATURE RATINGS 2.1 The pressure-temperature ratings in
30、Table 1 (Table X1-2) apply to all products governed by this Standard Practice. Valves conforming to the requirements of this Standard Practice shall, in all respects, merit these ratings. 2.2 These ratings are the maximum allowable, non-shock pressures at the temperatures shown, and allowable pressu
31、res may be interpolated between temperatures shown. 2.3 The temperature shown, corresponding to the pressure rating, shall be the material temperature of the pressure retaining structure (the temperature rating). MSS STANDARD PRACTICE SP-802 In view of the various environments in which piping compon
32、ents may be installed (i.e., insulated or not, and either heated or cooled), it is assumed that the material temperature of the pressure retaining structure is the temperature of the contained fluid. Use of a pressure rating at a material temperature other than the temperature of the contained fluid
33、 is the responsibility of the user, and subject to the requirements of applicable codes. 2.4 The safe pressure-temperature rating of a solder-joint piping system is dependent, not only on the valve, fitting, and tubing strength, but also on the composition of the solder used for joints. Pressure-tem
34、perature limitations for solder joints made with typical commercial solders are given in Table A1 (Table X1-1). It shall be the responsibility of the user to select a solder composition that is compatible with the service conditions, as well as to assure the adequacy of workmanship employed in makin
35、g the joints. 2.5 The ratings given in Table 1 at -20 F (-29 C) to 150 F (66 C) shall also apply at lower temperatures. Products that are to operate at low temperatures shall conform to the rules of the applicable codes under which they are to be used. 2.6 The safe pressure-temperature rating of val
36、ves fitted with non-metallic discs, (i.e., Type 2 globe and angle valves, and Types 2 and 4 check valves) is dependent upon the composition of the disc material. It shall be the responsibility of the user to specify the service application. When no service application is specified, discs suitable fo
37、r steam service at rated working conditions shall be furnished in all Type 2 bronze globe and angle valves, and in all Type 2 and 4 bronze check valves. Users are advised to consult with manufacturer in cases of doubt. 3. MATERIALS 3.1 General All valve components manufactured to this Standard Pract
38、ice shall be made from materials produced under recognized quality control procedures. Recommended materials are listed in Table 2. 3.2 Castings All castings shall be clean and sound, without defects which will impair their service. No plugging, welding, repairing, or impregnating is allowed. 3.3 Co
39、rrosion Users are cautioned against application with fluids that may react chemically with any material used in these valves. In certain areas of the country, where water conditions are particularly “aggressive“, piping components made from certain zinc-bearing copper-base alloys are susceptible to
40、a form of corrosion known as dezincification. Consultation with the manufacturer is advised to determine suitability in cases of doubt. 4. DESIGN 4.1 General Valves shall be of substantial construction to resist permanent distortion under normal service conditions and shall be free of imperfections
41、and defects which may be injurious to the performance of the valve. 4.2 Flow Passage Area 4.2.1 The flow passageway of bronze gate valves shall have a minimum area of not less than the area of a circle having a diameter equal to the nominal pipe size except that valves fitted with seat rings may red
42、uce the passageway area by the area of the seat ring driving lugs. The valve shall be so designed that the stem and/or wedge clear the waterway when the valve is fully open. 4.2.2 The flow passageway of Types 1 and 2 bronze globe and angle valves designed with integral seats and when fully opened, s
43、hall have an area at all points equal to the area of a circle having a diameter equal to the nominal pipe size, except the area through the seat may be reduced by the area of the disc guides. 4.2.3 The flow passageway area of Type 3 bronze globe and angle valves of the full flow design may be reduce
44、d by the area of the seating driving lugs. 4.2.4 The flow passageway of Type 3 bronze globe and angle valves of the plug design, for throttling service, may have a reduced area through the seat. MSS STANDARD PRACTICE SP-803 4.2.5 The flow passageway of bronze check valves, Types 3 and 4, shall have
45、a minimum area of not less than the area of a circle having a diameter equal to the nominal pipe size, except that valves fitted with seat rings may reduce the passageway area by the area of the seat-ring driving lugs. 4.3 Body and Bonnet 4.3.1 The body-bonnet joint on bronze gate, globe and angle v
46、alves and the body-cap joint on bronze check valves may be inside screw, screw-over, union ring, or bolted construction. 4.3.2 Threaded Ends 4.3.2.1 Threaded end bodies may have polygon ends or may have rounded ends with ribs. Valves with threaded ends shall be threaded in accordance with the requir
47、ements of ASME B1.20.1. 4.3.2.2 All threads shall be countersunk a distance not less than one-half the pitch of the threads at an angle of approximately 45 degrees (45). Countersinking shall be concentric with threads. 4.3.2.3 The length of the threads specified in Table 3 (Table X1-3) shall be meas
48、ured to include the countersink or chamfer and comply with L1 and L3 gauging. The maximum allowable variation in the alignment of threads of all openings of threaded valves shall be 0.06 inches (1.5 mm) in 12 inches (305 mm). 4.3.3 Solder-Joint Ends Solder-joint ends shall be prepared in accordance
49、with applicable requirements of ASME B16.18. 4.3.4 Flanged Ends Flanges and drilling of flanged end valves shall be in accordance with applicable requirements of ASME B16.24. The finish of facing shall be in accordance with MSS SP-6. 4.3.5 Stem Thread Engagement 4.3.5.1 Rising-stem valves shall have a minimum length of stem-thread engagement equal to the outside diameter of the thread when the valve is closed and 75% of the outside diameter of the stem thread when the valve
