ISO 14723 PDF

ISO. First edition. Petroleum and natural gas industries —. Pipeline transportation systems — Subsea pipeline valves. Industries du pétrole . ISO (E). PDF disclaimer. This PDF file may contain embedded typefaces. In accordance with Adobe’s licensing policy, this file may. Dear all, I am looking for this spec, ISO / API 6DSS Petroleum and natural gas industries — Pipeline transportation systems — Subsea pipeline valves.

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Test fluids for the hydrostatic test shall be fresh water containing a corrosion inhibitor and, by agreement, antifreeze. Actuators and gearboxes shall be mounted on the valves by the valve manufacturer at the factory, unless otherwise agreed. Pressure testing, including pipe pups if applicable, shall be carried out before coating of the valves.

For valves with one seat uni-directional and one seat bi-directional, the directions of both seats shall be specified on a separate identification plate as illustrated in Figure The valve shall then be closed and the test pressure applied successively 14273 both ends of the valve.

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Check valves shall have an obturator that responds automatically to prevent flow in one direction. Special flanges and mechanical joints?

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API 6DSS / ISO by ce dee on Prezi

Follow these links to find other Standards similar to the one you are viewing. Attention is drawn to the possibility that some of the elements of this document may be the subject of patent rights. It presents the UK view on standards in Europe and at the international level. Figure 9 — Typical single-plate wafer-type check valve, long pattern 147723. The choice of standard shall be by agreement. The test duration shall be in accordance with Table After isl, the pressure source shall be isolated from the valve.


The interface between actuators or gearboxes and valve bonnet or stem extension assemblies shall be sealed, for example with gaskets or O-rings, to prevent external contaminants from entering the assembly. Amazon Renewed Refurbished products with a warranty.

Figure 10 — 1723 dual-plate wafer-type check valve, long pattern www. It is designed to cover every economic sector and virtually every activity of the humankind where technical standards may be used.

NOTE 2 Some pipeline-welding standards can have more stringent requirements for the essential variables of welding. There’s a problem loading this menu right now. ISO Petroleum and natural gas industries – Cathodic protection of pipeline transportation systems. If the protector or cap can contain pressure, the protector or cap and method of attachment shall be capable of withstanding the valve design pressure and external hydrostatic pressure and shall be hydrostatically tested in accordance with this International Standard.

The purchaser shall specify which particular supplementary tests in Annex B shall be performed. If the purchaser specifies that the functionality for the valve be that of DIB-2, one seat uni-directional and one seat bi-directional, the test described in Clause B.

BS EN ISO 14723:2009

Figure 14 — Bolt hole misalignment www. The first inner barrier shall be a check valve located within the valve body. If none of the above standards applies, the selection of another design code or standard shall be by agreement.

Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the CEN Management Centre or to any CEN member.

Pressure-temperature ratings for class-rated valves shall be in accordance with the applicable rating table for the appropriate material group in ASME B Parallel threads shall comply with ISO The manufacturer shall be responsible for complying with all of the applicable requirements of this International Standard. The protector or cap shall have provisions for venting prior to removal and during fitting.

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Test pressures and durations shall be in accordance with M-P indicates information supplied by manufacturer when required by purchaser.

Diferences Between API 6D SS and ISO – Marine/Ocean engineering other topics – Eng-Tips

For metal-seated check valves, the leakage rate shall not exceed ISO If the use of parallel threads is specified, the connection shall have a 147233 section for trapping and retaining a sealing member suitable for the specified valve service.

Figure 12 — Typical axial flow check valve www. The manufacturer shall verify the suitability of the lifting points and recommend the lifting procedure. This publication does not purport to include all the necessary provisions of a contract. NOTE 3 Certain full-opening valves with pockets can allow a bypass of fluid around a short pig or sphere.

The minimum design thrust or torque 41723 be based on the operating mode that requires the greatest value of the thrust or torque.

Valves with a non-circular opening through the obturator shall not be considered full opening. NOTE Regulatory requirements can specify special design, manufacturing and certification of lifting points. Each valve shall ieo provided with an austenitic stainless-steel nameplate securely affixed and so located that it is easily accessible.

Draft International Standards adopted by the technical committees are circulated to the member bodies for voting.

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