ISO 6993-3:2006 PDF

Buried, high-impact poly(vinyl chloride) (PVC-HI) piping systems for the supply of gaseous fuels — Part 3: Fittings and saddles for a maximum operating pressure of 1 bar (100 kPa)

Название (английский):

ISO 6993-3:2006

Buried, high-impact poly(vinyl chloride) (PVC-HI) piping systems for the supply of gaseous fuels — Part 3: Fittings and saddles for a maximum operating pressure of 1 bar (100 kPa)

Статус документа:: Действующий
Формат:: Электронный (PDF)
Количество страниц:: 25
Дата публикации:: 14 июня 2006 г.
Издание:: ISO IS 6993 edition 1 version 1
ICS:: 75.200

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Описание (английский):

ISO 6993-3:2006 gives the requirements for full-end load-resistant fittings and saddles made of high-impact poly(vinyl chloride) (PVC-HI) intended to be used for the supply of gaseous fuels through buried pipelines having an operating temperature range of 0 degrees Celsius up to and including +30 degrees Celsius and a maximum operating pressure of 1 bar (100 kPa). It is applicable only to fittings and saddles manufactured from the high-impact PVC materials PVC-A, PVC-CPE and PVC-EPR. It is applicable to joints with elastomeric sealing elements and of the solvent cement type. The fittings and saddles are suitable for those gases not containing potentially damaging components in such concentrations as to impair the properties of the fitting/saddle material.

Технические детали

Технический комитет: ISO/TC 138/SC 4 - Plastics pipes and fittings for the supply of gaseous fuels
SKU: ISO 6993-3:2006

Abstract

Overview

ISO 6993-3:2006 specifies requirements for buried, high-impact poly(vinyl chloride) (PVC‑HI) fittings and saddles used to supply gaseous fuels at a maximum operating pressure of 1 bar (100 kPa). It covers full end‑load resistant components manufactured from PVC‑HI grades (PVC‑A, PVC‑CPE and PVC‑EPR) for buried pipelines with an operating temperature range of 0 °C to +30 °C, and applies to solvent‑cement and elastomeric‑seal joint types. The standard is intended for gases that do not contain components in concentrations that would damage the PVC‑HI materials.

Key topics and technical requirements

Materials
- Components must be made from high‑impact PVC (impact modifier ≥ 7% by mass).
- Minimum long‑term strength (MRS) of the injection‑moulding material: ≥ 14 MPa (evaluated per ISO 9080).
- Vicat softening temperature ≥ 74 °C (ISO 2507).
- Resin K‑value > 57 (EN 922).
- Elastomeric sealing elements to conform to EN 682:2002 (type G).
Geometry and dimensions
- Dimensional verification per ISO 3126; socket and spigot dimensions referenced to ISO 6993‑1 and ISO 4422‑3 where applicable.
- Saddles have defined minimum wall thickness and cross‑sectional area by nominal pipe size (manufacturer declarations must meet these minimums).
Physical and mechanical performance
- Limits on contamination and surface defects (cracks, blisters, delaminations) after oven testing.
- Resistance to external blows at 0 °C for fittings and saddles (test methods and acceptance criteria included); fittings must have a true impact rate (TIR) ≤ 5% under test conditions.
- Leak‑tightness, tensile resistance of in‑line assemblies, and other performance tests are specified.
Test methods and annexes
- Normative annexes (A–F) detail test procedures for external‑blow resistance, tensile testing, leak tightness under internal/external pressure and mechanical loading, and more.

Practical applications

Design, manufacture and quality assurance of buried PVC‑HI fittings and tapping saddles for low‑pressure gas distribution networks (up to 1 bar).
Specification for procurement, type‑approval and factory testing of fittings and saddles used by gas utilities, pipeline contractors and component manufacturers.
Guideline for performance testing in accredited labs to demonstrate compliance (impact resistance, leak tightness, long‑term material strength).

Who should use this standard

Pipe and fitting manufacturers (moulding and compounding).
Gas network designers, utilities and asset owners.
Installation contractors and inspection/testing laboratories.
Regulators and procurement teams specifying buried gas distribution components.

Related standards

ISO 6993‑1, ISO 6993‑2, ISO 6993‑4 (other parts of the PVC‑HI gas piping series)
ISO 9080, ISO 2507, ISO 3126, ISO 3127, ISO 4422‑3
EN 682, EN 922

Keywords: ISO 6993‑3, PVC‑HI fittings and saddles, buried gas piping, 1 bar, solvent cement joints, elastomeric seals, MRS value, Vicat softening, impact resistance, tapping saddle.

Overview

Key topics and technical requirements

Materials
- Components must be made from high‑impact PVC (impact modifier ≥ 7% by mass).
- Minimum long‑term strength (MRS) of the injection‑moulding material: ≥ 14 MPa (evaluated per ISO 9080).
- Vicat softening temperature ≥ 74 °C (ISO 2507).
- Resin K‑value > 57 (EN 922).
- Elastomeric sealing elements to conform to EN 682:2002 (type G).
Geometry and dimensions
- Dimensional verification per ISO 3126; socket and spigot dimensions referenced to ISO 6993‑1 and ISO 4422‑3 where applicable.
- Saddles have defined minimum wall thickness and cross‑sectional area by nominal pipe size (manufacturer declarations must meet these minimums).
Physical and mechanical performance
- Limits on contamination and surface defects (cracks, blisters, delaminations) after oven testing.
- Resistance to external blows at 0 °C for fittings and saddles (test methods and acceptance criteria included); fittings must have a true impact rate (TIR) ≤ 5% under test conditions.
- Leak‑tightness, tensile resistance of in‑line assemblies, and other performance tests are specified.
Test methods and annexes
- Normative annexes (A–F) detail test procedures for external‑blow resistance, tensile testing, leak tightness under internal/external pressure and mechanical loading, and more.

Practical applications

Design, manufacture and quality assurance of buried PVC‑HI fittings and tapping saddles for low‑pressure gas distribution networks (up to 1 bar).
Specification for procurement, type‑approval and factory testing of fittings and saddles used by gas utilities, pipeline contractors and component manufacturers.
Guideline for performance testing in accredited labs to demonstrate compliance (impact resistance, leak tightness, long‑term material strength).

Who should use this standard

Pipe and fitting manufacturers (moulding and compounding).
Gas network designers, utilities and asset owners.
Installation contractors and inspection/testing laboratories.
Regulators and procurement teams specifying buried gas distribution components.

Related standards

ISO 6993‑1, ISO 6993‑2, ISO 6993‑4 (other parts of the PVC‑HI gas piping series)
ISO 9080, ISO 2507, ISO 3126, ISO 3127, ISO 4422‑3
EN 682, EN 922

Keywords: ISO 6993‑3, PVC‑HI fittings and saddles, buried gas piping, 1 bar, solvent cement joints, elastomeric seals, MRS value, Vicat softening, impact resistance, tapping saddle.

ISO 6993-3:2006 PDF

Технические детали

Abstract

Overview

Key topics and technical requirements

Practical applications

Who should use this standard

Related standards

Похожие стандарты

Abstract

Overview

Key topics and technical requirements

Practical applications

Who should use this standard

Related standards

Похожие стандарты

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