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Piping codes, valve standards and ball valve selection

Piping codes, valve standards and ball valve selection Ron Manson, March 2015 ENGINEERED & PROCESS VALVES valve Requirements for Piping Codes - 2 asme - Power Piping , 2014 asme - Process Piping , 2012 asme - Pipeline Transportation Systems for Liquids and Slurries, 2012 asme - Gas Transmission and Distribution Piping Systems, 2012 All the above codes list valves as a Piping component. See sections , , & respectively asme - Power Piping , 2014 Listed valves (table ) - asme - Valves Flanged, Threaded and Weld End MSS SP67 - Butterfly Valves MSS SP68 - High Pressure Butterfly Valves with Offset Design Note: the list excludes cast iron and bronze valves 107 VALVES general (A) Valves complying with the standards and specifications listed in Table shall be used within the spec

ASME B31.3 - Process Piping, 2012 Listed valves (table 326.1) - ASME B16.34 - Valves – Flanged, Threaded and Weld End MSS SP72 - Ball Valves with Flanged or Butt-Welding Ends for General Service API 608 - Metal Ball Valves-Flanged, Threaded and Welding Ends

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Transcription of Piping codes, valve standards and ball valve selection

1 Piping codes, valve standards and ball valve selection Ron Manson, March 2015 ENGINEERED & PROCESS VALVES valve Requirements for Piping Codes - 2 asme - Power Piping , 2014 asme - Process Piping , 2012 asme - Pipeline Transportation Systems for Liquids and Slurries, 2012 asme - Gas Transmission and Distribution Piping Systems, 2012 All the above codes list valves as a Piping component. See sections , , & respectively asme - Power Piping , 2014 Listed valves (table ) - asme - Valves Flanged, Threaded and Weld End MSS SP67 - Butterfly Valves MSS SP68 - High Pressure Butterfly Valves with Offset Design Note: the list excludes cast iron and bronze valves 107 VALVES general (A) Valves complying with the standards and specifications listed in Table shall be used within the specified pressure temperature ratings.

2 Unless otherwise required in the individual standards and specifications listed in Table , such steel valves shall be pressure tested in accordance with MSS SP-61. (B) Valves not complying with (A) above shall be of a design, or equal to the design, that the manufacturer recommends for the service as stipulated in para. Such valves shall be pressure tested in accordance with MSS SP-61. asme - Process Piping , 2012 Listed valves (table ) - asme - Valves Flanged, Threaded and Weld End MSS SP72 - Ball Valves with Flanged or Butt-Welding Ends for general Service API 608 - Metal Ball Valves-Flanged, Threaded and Welding Ends Note: the list excludes cast iron and bronze valves 307 VALVES AND SPECIALTY COMPONENTS The following requirements for valves shall also be met as applicable by other pressure containing Piping components, such as traps, strainers, and separators.

3 See also Appendix F, paras. and F307. general Listed Valves. A listed valve is suitable for use in Normal Fluid Service, except as stated in para. Unlisted Valves. Unlisted valves may be used only in accordance with para. Unless pressure temperature ratings are established by the method set forth in asme , pressure design shall be qualified as required by para. asme - Pipeline Transportation Systems for Liquids and Slurries, 2012 Listed valves (table ) - asme - Valves Flanged, Threaded and Weld End MSS SP68 - High Pressure Butterfly Valves with Offset Design MSS SP72 - Ball Valves with Flanged or Butt-Welding Ends for general Service API 600 - Steel Gate Valves - Flanged and Butt-welding Ends, Bolted Bonnets, Twelfth Edition API 602 - Steel Gate, Globe and Check Valves for Sizes DN 100 and Smaller for the Petroleum and Natural Gas Industries, 9th Ed API 603 - Corrosion-resistant, Bolted Bonnet Gate Valves-Flanged and Butt-welding Ends.

4 Eighth Edition API 6D - Specification for Pipeline and Piping Valves, 24th Ed API 6A - Specification for Wellhead and Christmas Tree Equipment Note: the list excludes cast iron and bronze valves asme - Pipeline Transportation Systems for Liquids and Slurries, 2012 Valves general . Steel valves conforming to standards and specifications listed in Tables and may be used. These valves may contain certain cast, malleable, or wrought iron parts as provided for in API 6D. Cast iron valves conforming to standards and specifications listed in Tables and may be used for pressures not to exceed 250 psi (17 bar).

5 Care shall be exercised to prevent excessive mechanical loading (see para. ). Working pressure ratings of the steel parts of steel valves are applicable with the temperature limitations of -20 F (-30 C) to 250 F (120 C) (see para. ). Where resilient, rubber-like, or plastic materials are used for sealing, they shall be capable of withstanding the fluid, pressure, and temperature specified for the Piping system. Special Valves. Special valves not listed in Tables and shall be permitted, provided that their design is of at least equal strength and tightness and they are capable of withstanding the same test requirements as covered in these standards , and structural features satisfy the material specification and test procedures of valves in similar service set forth in the listed standards .

6 asme - Gas Transmission and Distribution Piping Systems, 2012 Listed valves (table ) - asme - Manually Operated Metallic Gas Valves for Use in Gas Piping Systems up to 175 psi (Sizes NPS1/2 Through NPS 2) asme - Valves Flanged, Threaded, and Welding End asme - Large Metallic Valves for Gas Distribution: Manually Operated, NPS 21 .2 (DN 65) to NPS 12 (DN 300), 125 psig ( bar) Maximum API 6D - Specification for Pipeline and Piping Valves, 24th Ed API 6A - Specification for Wellhead and Christmas Tree Equipment Note: the list excludes cast iron and bronze valves asme - Gas Transmission and Distribution Piping Systems, 2012 Valves and Pressure-Reducing Devices Valves Without Threads.

7 Valves shall conform to standards and specifications referenced in this Code and shall be used only in accordance with the service recommendations of the manufacturer. (a)Valves manufactured in accordance with the following standards may be used: see previous list. (b) Valves having shell (body, bonnet, cover, and/or end flange) components made of cast ductile iron in compliance with ASTM A395 and having dimensions conforming to asme , asme , asme , asme , asme , or API 6D/ISO 14313 may be used at pressures not exceeding 80% of the pressure ratings for comparable steel valves at their listed temperature, provided the pressure does not exceed 1,000 psig (6 900 kPa), and welding is not employed on any ductile iron component in the fabrication of the valve shells or their assembly as part of the Piping system.

8 (c) Valves having shell components made of cast iron shall not be used in gas Piping components for compressor stations. Federal Codes for Transportation of Natural and Other Gas by Pipeline Valves. Link to an amendment published at 80 FR 181, Jan. 5, 2015. (a) Except for cast iron and plastic valves, each valve must meet the minimum requirements of API 6D (incorporated by reference, see ), or to a national or international standard that provides an equivalent performance level. A valve may not be used under operating conditions that exceed the applicable pressure-temperature ratings contained in those requirements.

9 (b) Each cast iron and plastic valve must comply with the following: (1) The valve must have a maximum service pressure rating for temperatures that equal or exceed the maximum service temperature. (2) The valve must be tested as part of the manufacturing, as follows: (i) With the valve in the fully open position, the shell must be tested with no leakage to a pressure at least times the maximum service rating. (ii) After the shell test, the seat must be tested to a pressure not less than times the maximum service pressure rating. Except for swing check valves, test pressure during the seat test must be applied successively on each side of the closed valve with the opposite side open.

10 No visible leakage is permitted. Federal Codes for Transportation of Natural and Other Gas by Pipeline (iii) After the last pressure test is completed, the valve must be operated through its full travel to demonstrate freedom from interference. (c) Each valve must be able to meet the anticipated operating conditions. (d) No valve having shell (body, bonnet, cover, and/or end flange) components made of ductile iron may be used at pressures exceeding 80 percent of the pressure ratings for comparable steel valves at their listed temperature. However, a valve having shell components made of ductile iron may be used at pressures up to 80 percent of the pressure ratings for comparable steel valves at their listed temperature, if: (1) The temperature-adjusted service pressure does not exceed 1,000 (7 Mpa) gage; and (2) Welding is not used on any ductile iron component in the fabrication of the valve shells or their assembly.


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