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API - SPEC 6D

Specification for Pipeline Valves (Gate, Ball, and Check Valves)

inactive
Organization: API
Publication Date: 31 March 1994
Status: inactive
Page Count: 63
scope:

Coverage. This specification covers flanged and butt-welding gate, plug, ball, and check valves.

Codes, Specifications, and Standards. Each code, specification, or standard referenced herein shall be the latest edition or supplement in effect at the time of manufacture of the product.

Definitions.

Bidirectional Valve: A valve designed for sealing in either direction.

Block Valve: A gate, plug or ball valve that prevents flow or leakage into the downstream conduit when in the closed position. Valves shall be single or double seated, bidirectional or unidirectional. Unidirectional valves shall be marked with a flow direction arrow.

Closure Member: That part of a valve which is positioned in the flow stream to permit, obstruct or regulate flow.

Double Block and Bleed Valve: A valve with two seating surfaces which, in the closed position, provides blockage of flow from both valve ends when the cavity between the seating surface is vented or drained. A means shall be provided for draining or venting the cavity between the seating surfaces.

Extended Operating Gear: An operating means located above its normal position on a valve, to allow above-ground access when the valve is installed below ground.

Handle Extension: A length of bar or pipe used to manually operate a plug or ball valve. The handle extension is sized to fit the head. The handle extension is separable from the head that is attached to the valve stem.

Handwheel: A wheel consisting of a rim connected to a hub by spokes, which is used to manually operate a valve requiring multiple turns.

Locking Device: A part or an arrangement of parts providing a means to secure a valve in the open or closed position.

NPS: Abbreviation for Nominal Pipe Size in inches.

Position Indicator: A device to show whether a valve is in the open or closed position.

Pressure-Containing Parts: Those parts whose failure to function as intended would result in a release of retained fluid to the atmosphere such as bodies, bonnets, and stems.

Pressure-Controlling Parts: Those parts intended to control or regulate the movement of pressurized fluids, such as valve bore sealing mechanisms.

Raised Face: A flange face having a flat surface protruding 1/16 or ¼ inch beyond the outer flange face.

Ring Joint Face: A flange face having a specially shaped groove located between the bolt holes and the flange bore.

Seating Surfaces: The contact surfaces of the closure member and seat which effect valve closure.

Support Ribs or Legs: A metal structure attached to a valve body to provide a stable footing when the valve is to be set on a fixed base.

Unidirectional Valve: A valve designed for sealing in one direction only.

Venturi Plug Valve: A valve with a substantially reduced opening through the plug, in which the transition from each full opening end to the reduced opening is well streamlined.

Wrench A device for manually operating a plug or ball valve consisting of a length of pipe or bar with one end prepared to fit the valve stem.

Document History

June 1, 2016
Specification for Pipeline and Piping Valves
A description is not available for this item.
March 1, 2015
Specification for Pipeline and Piping Valves
A description is not available for this item.
August 1, 2014
Specification for Pipeline and Piping Valves
General This specification defines the requirements for the design, manufacturing, assembly, testing, and documentation of ball, check, gate, and plug valves for application in pipeline and piping...
August 1, 2014
Specification for Pipeline and Piping Valves
General This specification defines the requirements for the design, manufacturing, assembly, testing, and documentation of ball, check, gate, and plug valves for application in pipeline and piping...
August 1, 2014
Specification for Pipeline and Piping Valves
A description is not available for this item.
August 1, 2014
Specification for Pipeline and Piping Valves
General This specification defines the requirements for the design, manufacturing, assembly, testing, and documentation of ball, check, gate, and plug valves for application in pipeline and piping...
August 1, 2014
Specification for Pipeline and Piping Valves
General This specification defines the requirements for the design, manufacturing, assembly, testing, and documentation of ball, check, gate, and plug valves for application in pipeline and piping...
August 1, 2014
Specification for Pipeline and Piping Valves
General This specification defines the requirements for the design, manufacturing, assembly, testing, and documentation of ball, check, gate, and plug valves for application in pipeline and piping...
August 1, 2014
Specification for Pipeline and Piping Valves
General This specification defines the requirements for the design, manufacturing, assembly, testing, and documentation of ball, check, gate, and plug valves for application in pipeline and piping...
August 1, 2014
Specification for Pipeline and Piping Valves
General This specification defines the requirements for the design, manufacturing, assembly, testing, and documentation of ball, check, gate, and plug valves for application in pipeline and piping...
August 1, 2014
Specification for Pipeline and Piping Valves
General This specification defines the requirements for the design, manufacturing, assembly, testing, and documentation of ball, check, gate, and plug valves for application in pipeline and piping...
August 1, 2014
Specification for Pipeline and Piping Valves
General This specification defines the requirements for the design, manufacturing, assembly, testing, and documentation of ball, check, gate, and plug valves for application in pipeline and piping...
August 1, 2014
Specification for Pipeline and Piping Valves
General This specification defines the requirements for the design, manufacturing, assembly, testing, and documentation of ball, check, gate, and plug valves for application in pipeline and piping...
April 1, 2008
Specification for Pipeline Valves
This International Standard specifies requirements and provides recommendations for the design, manufacturing, testing and documentation of ball, check, gate and plug valves for application in...
April 1, 2008
Specification for Pipeline Valves
This International Standard specifies requirements and provides recommendations for the design, manufacturing, testing and documentation of ball, check, gate and plug valves for application in...
April 1, 2008
Petroleum and natural gas industries—Pipeline transportation systems—Pipeline valves
This International Standard specifies requirements and provides recommendations for the design, manufacturing, testing and documentation of ball, check, gate and plug valves for application in...
April 1, 2008
Specification for Pipeline Valves
This International Standard specifies requirements and provides recommendations for the design, manufacturing, testing and documentation of ball, check, gate and plug valves for application in...
April 1, 2008
Specification for Pipeline Valves
This International Standard specifies requirements and provides recommendations for the design, manufacturing, testing and documentation of ball, check, gate and plug valves for application in...
April 1, 2008
Specification for Pipeline Valves
This International Standard specifies requirements and provides recommendations for the design, manufacturing, testing and documentation of ball, check, gate and plug valves for application in...
March 1, 2005
Specification for Pipeline Valves
A description is not available for this item.
January 1, 2002
ISO 14313:1999, Petroleum and Natural Gas Industries-Pipeline Transportation Systems-Pipeline Valves
This International Standard specifies requirements and gives recommendations for the design, manufacturing, testing and documentation of ball, check, gate and plug valves for application in pipeline...
January 1, 2002
Petroleum and Natural Gas Industries-Pipeline Transportation Systems-Pipeline Valves
A description is not available for this item.
SPEC 6D
March 31, 1994
Specification for Pipeline Valves (Gate, Ball, and Check Valves)
Coverage. This specification covers flanged and butt-welding gate, plug, ball, and check valves. Codes, Specifications, and Standards. Each code, specification, or standard referenced herein shall be...
March 31, 1994
Specification for Pipeline Valves (Gate, Ball, and Check Valves)
A description is not available for this item.
March 31, 1994
Specification for Pipeline Valves (Gate, Ball, and Check Valves)
Coverage. This specification covers flanged and butt-welding gate, plug, ball, and check valves. Codes, Specifications, and Standards. Each code, specification, or standard referenced herein shall be...

References

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