ASME B16.38

ASME B16.38

Large Metallic Valves for Gas Distribution Manually Operated, NPS 2 1/2 (DN 65) to NPS 12 (DN 300), 125 psig (8.6 bar) Maximum
Large Metallic Valves for Gas Distribution Manually Operated, NPS 21/2 (DN 65) to NPS 12 (DN 300), 125 psig (8.6 bar) Maximum
Large Metallic Valves for Gas Distribution (Manually Operated, NPS 2 1/2 to 12, 125 psig Maximum)
Large Metallic Valves for Gas Distribution (Manually Operated, NPS 2 1/2 to 12, 125 psig Maximum)

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Standard Details

Scope:
Valve Types

This Standard covers requirements for manually operated metallic valves in nominal sizes 21⁄2 (DN 65) through 12 (DN 300) having the inlet and outlet on a common centerline. These valves are intended for controlling the flow of gas from open to fully closed positions, for use in distribution and service lines where the maximum gage pressure does not exceed 125 psig (8.6 bar). Valve seats, seals, and stem packing may be nonmetallic.

Application

This Standard sets forth the minimum capabilities, characteristics, and properties that a newly manufactured metallic valve must possess in order to be considered suitable for use in piping systems indicated above, carrying natural gas, manufactured gas [includes synthetic natural gas (SNG)], and liquefied petroleum gases (distributed as a vapor, with or without the admixture of air) or mixtures thereof.

Organization: ASME International
Document Number: asme b16.38
Publish Date: 2012-09-21
Page Count: 20
Available Languages: EN
DOD Adopted: NO
ANSI Approved: YES
Most Recent Revision: YES
Current Version: YES
Status: Active

Publication Date: 09/21/2012 - Complete Document

Description :

Valve Types

This Standard covers requirements for manually operated metallic valves in nominal sizes 21⁄2 (DN 65) through 12 (DN 300) having the inlet and outlet on a common centerline. These valves are intended for controlling the flow of gas from open to fully closed positions, for use in distribution and service lines where the maximum gage pressure does not exceed 125 psig (8.6 bar). Valve seats, seals, and stem packing may be nonmetallic.

Application

This Standard sets forth the minimum capabilities, characteristics, and properties that a newly manufactured metallic valve must possess in order to be considered suitable for use in piping systems indicated above, carrying natural gas, manufactured gas [includes synthetic natural gas (SNG)], and liquefied petroleum gases (distributed as a vapor, with or without the admixture of air) or mixtures thereof.

Document Type : Complete Document

Language : English

Page Count : 20

Publication Date : 09/21/2012

Revision : 12

Status : Current

Title : Large Metallic Valves for Gas Distribution Manually Operated, NPS 2 1/2 (DN 65) to NPS 12 (DN 300), 125 psig (8.6 bar) Maximum

Publication Date: 01/01/2007 - Complete Document

Description :

Valve Types

This Standard covers requirements for manually operated metallic valves in nominal sizes 2½ (DN 65) through 12 (DN 300) having the inlet and outlet on a common centerline. These valves are intended for controlling the flow of gas from open to fully closed positions, for use in distribution and service lines where the maximum gage pressure does not exceed 125 psig (8.6 bar). Valve seats, seals, and stem packing may be nonmetallic.

Application

This Standard sets forth the minimum capabilities, characteristics, and properties that a newly manufactured metallic valve must possess in order to be considered suitable for use in piping systems indicated above, carrying natural gas, manufactured gas [includes synthetic natural gas (SNG)], and liquefied petroleum gases (distributed as a vapor, with or without the admixture of air) or mixtures thereof.

Referenced Standards

Standards and specifications adopted by reference in this Standard and the names and addresses of the sponsoring organizations are shown in Mandatory Appendix I. It is not considered practical to refer to a specific edition of each of the standards and specifications in the individual references. Instead, the specific edition references are included in Mandatory Appendix I. A product made in conformance with a prior edition of reference standards will be considered to be in conformance, even though the edition reference may be changed in a subsequent revision of the standard.

Quality Systems

Nonmandatory requirements relating to the product manufacturer's Quality System Program are described in Nonmandatory Appendix A.

Convention

For the purpose of determining conformance with this Standard, the convention for fixing significant digits where limits, maximum or minimum values, shall be "rounded off" as defined in ASTM Practice E 29. This requires that an observed or calculated value shall be rounded off to the nearest unit in the last right-hand digit used for expressing the limit. Decimal values and tolerances do not imply a particular method of measurement.

Codes and Regulations

A valve used under the jurisdiction of a Federal Regulation, such as CFR Title 49, Part 192; the ASME Code for Pressure Piping, such as ASME B31.8; or the National Fuel Gas Code, Z223.1, is subject to any limitation of that code or regulation.

Definitions

NPS: nominal pipe size

NVS: nominal valve size

one bar: 100 kPa

PTFE: materials that comply with ASTM D 4894, Specification for Polytetrafluoroethylene (PTFE) Granular Molding and Extrusion Materials

All pressures, unless otherwise stated, are gage pressures.

Document Type : Complete Document

Language : English

Page Count : 18

Publication Date : 01/01/2007

Revision : 07

Status : Historical

Title : Large Metallic Valves for Gas Distribution Manually Operated, NPS 21/2 (DN 65) to NPS 12 (DN 300), 125 psig (8.6 bar) Maximum

Publication Date: 01/01/1985 - Complete Document Changes Incorporated

Document Type : Complete Document

Language : English

Page Count : 16

Publication Date : 01/01/1985

Revision : 85

Status : Historical

Supplement : W/

Title : Large Metallic Valves for Gas Distribution (Manually Operated, NPS 2 1/2 to 12, 125 psig Maximum)

Publication Date: 01/01/1985 - Base Document Changes Incorporated

Description :

Valve Types

This Standard covers only manually operated metallic valves in nominal pipe sizes 2½ through 12 having the inlet and outlet on a common center line, which are suitable for controlling the flow of gas from open to fully closed, for use in distribution and service lines where the maximum gage pressure at which such distribution piping systems may be operated in accordance with the Code of Federal Regulations (CFR), Title 49, Part 192, Transportation of Natural and Other Gas by Pipeline; Minimum Safety Standard, does not exceed 125 psi (8.6 bar). Valve seats, seals, and stem packing may be nonmetallic.

Application

This Standard sets forth the minimum capabilities, characteristics, and properties which a newly manufactured metallic valve must possess in order to be considered suitable for use in piping systems indicated above with natural gas, manufactured gas [includes synthetic natural gas (SNG)], and liquefied petroleum gases (distributed as a vapor, with or without the admixture of air) or mixtures thereof. (Nonmetallic components, such as elastomer seals or sealants, may be adversely affected by gases having high hydrogen content or compounds likely to form condensates. Specific application details must be considered.) Details of design and manufacture, including design and production tests other than those stated in this Standard, remain the responsibility of the manufacturer.

Referenced Standards

Standards and specifications referenced under this Standard are shown in Annex A.

Document Type : Base Document

Language : English

Page Count : 16

Publication Date : 01/01/1985

Revision : 85

Status : Historical

Supplement : W/

Title : Large Metallic Valves for Gas Distribution (Manually Operated, NPS 2 1/2 to 12, 125 psig Maximum)

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