MSS SP-116-2014 Service-Line Valves and Fittings for Drinking Water Systems.pdf

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1、MSS SP-116-2014 Service-Line Valves and Fittings for Drinking Water Systems 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:

2、 standardsmss-hq.org www.mss-hq.org MSS STANDARD PRACTICE SP-116i This MSS Standard Practice was developed under the consensus of the MSS Technical Committee 112 and the MSS Coordinating Committee. The content of this Standard Practice is the resulting efforts of competent and experienced volunteers

3、 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 MSS Standard Prac

4、tice 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 applicable. MSS has

5、 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 the statement. “Unl

6、ess 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 A). This Standard Practice shall remain silent

7、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 connection therewit

8、h. 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, figures, and references

9、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 include mandatory

10、 requirements. U.S. customary units in this Standard Practice are the standard; (SI) metric units are for reference only. This Standard Practice has been substantially revised from the previous 2011 edition. It is suggested that if the user is interested in knowing what changes have been made, that

11、direct page by page comparison should be made of this document. 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-116-2014 with permission of the

12、 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 the Valve and Fittings Indu

13、stry Inc. All rights reserved. Originally Approved: February (April) 1996 Originally Published: May 1996 Current Edition Approved: September 2014 Current Edition Published: December 2014 MSS is a registered trademark of Manufacturers Standardization Society of the Valve and Fittings Industry, Inc. C

14、opyright 2014 by Manufacturers Standardization Society of the Valve and Fittings Industry, Inc. Printed in U.S.A. MSS STANDARD PRACTICE SP-116ii FOREWORD In the mid 1990s, the Manufacturers Standardization Society was requested to develop a Standard Practice for line valves and assigned this as a pr

15、oject to the MSS Committee 112, Water Works Valves and Fittings. Many of the significant components of service-lines for drinking water systems have not been specifically covered by standards. The MSS Committee 112 decided to fill this need in the water works industry by creating this Standard Pract

16、ice, which has a broader scope than previous drinking water service line standards. However, the tubing, pipe, water main, water meter, and machines associated with drinking water service-lines are not covered by this Standard Practice. The 2003 version was substantially revised from the original 19

17、96 version. The 2011 version was substantially updated and revised from the 2003 version; including an update of Sections 2, 4, 9, multiple Tables, and Annex A. This 2014 version includes minor editing of the text, formatting adjustments, the addition of several new definitions in Section 2, approve

18、d revisions to Sections 1, 5, 6, and 9, errata corrections in Table 10 through 13, the movement of the optional field testing instructions in Section 6 from the body of the Standard Practice to the Appendix, and updating of references in Annex A. MSS STANDARD PRACTICE SP-116iii TABLE OF CONTENTS SEC

19、TION PAGE PURPOSE . 1 1 SCOPE . 1 2 DEFINITIONS 1 3 INFORMATION THAT MAY BE REQUESTED OF THE MANUFACTURER 3 4 MATERIALS 3 5 DESIGN 4 6 INSPECTION AND TESTING 9 7 MARKINGS 9 8 PREPARATION FOR SHIPMENT 9 9 INSTALLATION 9 TABLE 1 Drill Clearance through Corporation Valves . 14 2 Maximum Swing Radius .

20、14 3 Maximum Length for Corporation Valves 15 4 Standard AWWA Corporation Valve Inlet External Threads . 15 5 NPT Corporation Valve Inlet External Threads 16 6 NPT Corporation Valve Outlet External Threads . 16 7 External Outlet Threads for Use with Flared Copper Tubing . 17 8 Coupling Nuts for Use

21、with Flared Copper Tubing 17 9 Corporation Valve Outlet External Special Purpose Coupling Threads . 18 10 Coupling Nut for Connecting to Corporation Valve Outlet Special Purpose Coupling Threads 18 11 Internal Driving Threads for Corporation Valves . 19 12 Meter Coupling 19 13 Oval Flange Meter Conn

22、ections 20 14 Standard AWWA Threads for Service Saddle Clamps . 20 FIGURE 1 Straight Design Meter Valve/Angle Design Meter Valve . 10 2 NPS 1/2 through NPS 2 Curb Valve Keyhead Compatible with Shut-off Rod . 11 3 NPS 1/2 through NPS 1 Curb Valve Keyhead Compatible with Both NPS Shut-off Rod and NPS

23、1/2 through NPS 1 Stationary Rod 12 4 NPS 1 through NPS 2 Curb Valve Keyhead Compatible with Both NPS Shut-off Rod and NPS 1 through NPS 2 Stationary Rod 13 ANNEX A Referenced Standards and Applicable Dates . 21 APPENDIX X1 Field Testing 23 MSS STANDARD PRACTICE SP-1161 PURPOSE To provide a Standard

24、 Practice covering most of the significant valves and fittings used in drinking water service-line systems including both buried and non-buried valves, fittings, meter setters, and service saddle clamps. 1. SCOPE 1.1 This Standard Practice covers valves and fittings in sizes NPS 1/2 through NPS 2, f

25、or use in drinking water system service-lines between the main and the meter. Included are: a) Buried valves and fittings that are designed to be in direct contact with the soil (corporation valves, service saddle clamps, and curb valves). b) Non-buried valves and fittings that are designed for inst

26、allation within an enclosure such as a meter box or building structure (meter valves, check valves, meter fittings, and meter setters). c) Fittings include various types of couplings and adapters. Not Included: a) Reduced pressure backflow preventers. 1.2 This Standard Practice establishes the minim

27、um requirements that a drinking water service-line valve or fitting must possess at the time of manufacture. Details of design and manufacture, other than those stated in this standard, including such design and production tests to ensure that each valve or fitting will have these capabilities, rema

28、in the responsibility of the manufacturer. 2. DEFINITIONS 2.1 Under this Standard Practice the following definitions shall apply: 2.1.1 Angle Design Meter Valve A meter valve in which the inlet and outlet are at right angles (i.e., 90) to one another. 2.1.2 Adapter Facilitates the connection of an i

29、tem to a size or type of tubing, pipe, or fitting, which is different from that to which the item was designed to be connected. 2.1.3 Body The principal pressure containing shell of a valve or fitting which has ends adapted for connection to tubing or piping. 2.1.4 Clamp See “Service Saddle Clamp”.

30、2.1.5 Check Valve A unidirectional valve which is opened by the fluid flow in one direction and which closes automatically to prevent flow in the reverse direction. 2.1.6 Compression Fitting A fitting for tube or pipe which seals and grips by radial deformation of circumferential sealing elements. 2

31、.1.7 Corporation Valve Buried valve which connects to a water main or service saddle to prevent water flow while installing or maintaining service-line components. 2.1.8 Coupling A fitting used to make a linear connection between two lengths of tubing or piping. 2.1.9 Curb Box A vertical sleeve exte

32、nding downward from the street or sidewalk level which provides above-ground access to a buried valve, meter, or other appurtenance. 2.1.10 Curb Valve Water service-line valve located partway between the main and meter, generally buried near the curb of the street and usually with a curb box install

33、ed over it for convenient operation from above ground. 2.1.11 Driving Thread Thread in an outlet end of a corporation stop to attach the valve to a tapping machine adapter during the valve installation. 2.1.12 Fitting Connector or closure used with piping or piping components to form fluid lines and

34、 passages with a desired system configuration. 2.1.13 Flange An annular collar designed to permit a bolted connection with similar collars. SERVICE-LINE VALVES AND FITTINGS FOR DRINKING WATER SYSTEMS MSS STANDARD PRACTICE SP-1162 2.1.14 Flanged Ends Refers to a type of connection on a valve or fitti

35、ng, used for joining to other components with mating flanges. 2.1.15 Half-Turn Valve A valve whose closure member rotates approximately 180 to move from full open to full closed position. 2.1.16 Inlet End of valve or fitting through which flow enters. 2.1.17 Manufacturer The party producing the valv

36、es, fittings, tubing, and pipe utilized in the water system, in accordance with this Standard Practice. 2.1.18 Meter Box An enclosure for water meters, meter valves, check valves, meter fittings, meter setters, and associated piping designed for direct burial in the soil. 2.1.19 Meter Setter A confi

37、guration of tubing, valves, and fittings that provide for the retention of a water meter. Tail pieces are not included. 2.1.20 Meter Swivel Nut The free spinning nut on the meter connecting ends of some meter valves and meter fittings, which has an inside thread that engages that outside thread on t

38、he end of the meter. 2.1.21 Meter Valve A valve installed at the meter in a water service-line, and accessible for routinely interrupting the flow through the meter line and as a convenient shut-off for meter servicing. 2.1.22 Meter Yoke A service-line device which serves as a receptacle to hold the

39、 meter in its place. 2.1.23 Multi-Turn Valve A multi-turn valve is any valve that is operated ( fully opened to fully closed) by turning or rotating its stem multiple times. 2.1.24 NPS Indicates “Nominal Pipe Size” (U.S. customary). A standard size identification number, not necessarily an actual di

40、mension. The European designation equivalent to NPS is called DN (diametre nominal/diameter nominal) in which sizes are based on (SI) metric units. Guidelines for (SI) metric data may be found in MSS SP-86. 2.1.25 NPT Abbreviation for “National Pipe Thread” (U.S. customary) standard, as per ASME B1.

41、20.1. 2.1.26 Nominal Pipe Size (NPS) See Section 2.1.24. 2.1.27 Outlet End of valve or fitting through which flow exits. 2.1.28 Packing Deformable material which provides a seal around a movable penetration through a pressure boundary. 2.1.29 Pipe Threads Threaded end connections used to join piping

42、 components. 2.1.30 Purchaser The party entering into a contract or agreement to purchase product or work to be performed, in accordance with this Standard Practice. 2.1.31 Quarter-Turn Valve A valve whose closure member rotates approximately 90 to move from the full open to full closed position. 2.

43、1.32 Rated Pressure The maximum sustained operating pressure for which a valve or fitting is designed and manufactured for use. 2.1.33 Reduced Port Valve A valve equipped with a reduced flow passage through the closure member for a given end connect size. 2.1.34 Saddle See “Service Saddle Clamp”. 2.

44、1.35 Seal Wire or Security Seal Wire A locking wire, generally applied by the utility, which prevents operation of a valve without breaking the wire and thus providing evidence of tampering. 2.1.36 Service Saddle Clamp Fitting which provides a sealed connection between the inlet end of a corporation

45、 stop and the service outlet hole in a main pipe (also known as a service saddle, or service clamp, or saddle, or clamp, or saddle clamp). 2.1.37 Starting Thread Chamfer Bevel at the starting end of a thread, usually to make the thread easier to start turning into a mating thread. 2.1.38 Stem A valv

46、e component to which motion is imparted outside the valve assembly to move the closure member inside the valve. MSS STANDARD PRACTICE SP-1163 2.1.39 Other Definitions Other Definitions may be found in MSS SP-96. 3. INFORMATION THAT MAY BE REQUESTED OF THE MANUFACTURER 3.1 Purchase Requirements If re

47、quired by the purchasers supplementary specifications, the manufacturer shall furnish the following information: 3.1.1 Catalog Data The manufacturer shall supply catalog data, including illustrations and a parts schedule that identifies the materials to be used for manufacturing these items. This in

48、formation shall be in sufficient detail to serve as a guide in the assembly and disassembly of the valve and for ordering repair parts. 3.1.2 Approval Drawings When specified on the purchase order, the manufacturer shall submit to the purchaser for approval one set of drawings showing the installati

49、on dimensions, construction details, and materials used for all parts of the valve. All work shall be done and all valves shall be furnished in accordance with these drawings approved by the purchaser. 3.1.3 Certification When specified on the purchase order, the manufacturer shall furnish a letter of certification stating that the valves and/or fittings and all materials used in their construction conform to the applicable requirements of this Standard Practice and the applicable specifications, and that all tests specified therein have been performed and