Specification for Pipeline Valves- Petroleum and natural gas industries
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Specification for Pipeline Valves -Petroleum and natural gas
industries



.pdf   Petroleum and naturalgasindustries.pdf (Size: 1.16 MB / Downloads: 12)
Introduction

This International Standard is the result of harmonizing the requirements of ISO 14313:1999 and
API Spec 6D-2002[5].
The revision of ISO 14313 is developed based on input from both ISO/TC67/SC2 WG2 and
API 6D TG technical experts. The technical revisions have been made In order to accommodate the needs of
industry and to move this International Standard to a higher level of service to the petroleum and natural gas
industry.
Users of this International Standard should be aware that further or differing requirements can be needed for
individual applications. This International Standard is not intended to inhibit a manufacturer from offering, or
the purchaser from accepting, alternative equipment or engineering solutions for the individual application.
This may be particularly applicable where there is innovative or developing technology. Where an alternative
is offered, the manufacturer should identify any variations from this International Standard and provide details.

Petroleum and natural gas industries — Pipeline transportation
systems — Pipeline valves


Scope

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 pipeline
systems meeting the requirements of ISO 13623 for the petroleum and natural gas industries.
This International Standard is not applicable to subsea pipeline valves, as they are covered by a separate
International Standard (ISO 14723).
This International Standard is not applicable to valves for pressure ratings exceeding PN 420 (Class 2 500).

Conformance

Units of measurement
In this International Standard, data are expressed in both SI units and USC units. For a specific order item,
unless otherwise stated, only one system of units shall be used, without combining data expressed in the
other system.
For data expressed in SI units, a comma is used as the decimal separator and a space is used as the
thousands separator. For data expressed in USC units, a dot (on the line) is used as the decimal separator
and a comma is used as the thousands separator.

Rounding

Except as otherwise required by this International Standard, to determine conformance with the specified
requirements, observed or calculated values shall be rounded to the nearest unit in the last right-hand place of
figures used in expressing the limiting value, in accordance with the rounding method of ISO 31-0:1992,
Annex B, Rule A.
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