ISO 23555-2:2022
Gas pressure safety and control devices for use in gas transmission, distribution and installations for inlet pressures up to and including 10 MPa — Part 2: Gas pressure regulator
Gas pressure safety and control devices for use in gas transmission, distribution and installations for inlet pressures up to and including 10 MPa — Part 2: Gas pressure regulator
- Статус документа:
- Действующий
- Формат:
- Электронный (PDF)
- Количество страниц:
- 58
- Дата публикации:
- 11 января 2022 г.
- Издание:
- ISO IS 23555 edition 1 version 1
- ICS:
- 23.060.40
This document specifies safety, constructional, performance, testing and documentation requirements for gas pressure regulators for use in gas transmission and distribution installations (hereafter referred to as regulators). This document is applicable to regulators with operating pressures greater than 500 kPa and up to and including 10 MPa (100 bar) and nominal diameters up to DN 400 for use with fuel gases as natural gas, manufactured gas, biomethane or liquefied petroleum gas (LPG). This document is applicable to: — test methods which are intended for product type test, routine tests and product surveillance tests; — regulators which use the pipeline gas as a source of control energy unassisted by any external power source; — regulators integrating on the same body a second regulator, used as monitor, complying with the requirements in this document; — regulators integrating a safety shut off device (SSD) according to ISO 23555-3; — regulators incorporating a creep (venting) relief device and/or a vent limiter complying with the requirements in this document. This document does not apply to: — regulators upstream from/on/in domestic gas‑consuming appliances which are installed downstream of domestic gas meters; — regulators designed to be incorporated into pressure control systems used in service lines (pipework from the main pipework in a gas infrastructure to the point of delivery of the gas) with declared volumetric flow rate ≤ 200 m3/h at normal conditions and declared inlet pressure ≤ 500 kPa (5 bar); — industrial process control valves, such as IEC 60534 (all parts); — regulators used in aggressive/sour gas environments (gas environments containing water and H2S are considered sour) or severely corrosive conditions; — regulators in service conditions with renewables (e.g. H2NG with hydrogen more than 10 %) and/or waste gases (e.g. biogas etc.), if additional information is not provided (e. g. contaminant, liquid, etc.).
Abstract
Overview - ISO 23555-2:2022 (Gas pressure regulator)
ISO 23555-2:2022 defines safety, constructional, performance, testing and documentation requirements for gas pressure regulators used in gas transmission and distribution systems. It applies to regulators with inlet pressures > 500 kPa and up to 10 MPa (100 bar) and nominal diameters up to DN 400, intended for fuel gases such as natural gas, manufactured gas, biomethane and LPG. The standard covers product type tests, routine and surveillance tests, and regulators that use pipeline gas as control energy (no external power). It also applies to devices integrating a monitor regulator, a safety shut‑off device (SSD) per ISO 23555‑3, and creep (venting) relief devices and vent limiters.
Key topics and technical requirements
- Scope & limits: Operating pressure and size limits, permitted gas types, and explicit exclusions (see below).
- Design and materials: Requirements for metallic and elastomeric parts, diaphragms, welding and strength of pressure-containing parts.
- Performance & testing: Test rig requirements, type/routine/surveillance tests, shell strength, internal/external tightness, antistatic characteristics, sound emission, control classification, fail‑safe behaviour (fail‑open / fail‑close).
- Functional features: Requirements for monitor regulators, integrated SSDs, creep (token) relief devices and high‑pressure vent limiters.
- Documentation & marking: Type test and batch documentation, routine test records, marking and packaging requirements.
- Annexes: Normative and informative annexes provide materials lists, elastomer guidance, vent limiter and creep device definitions, compliance evaluation, inspection certificate and test templates, dynamic force calculations and order specification guidance.
Important exclusions noted by the standard:
- Regulators for domestic appliances downstream of domestic meters.
- Service‑line regulators with declared flow ≤ 200 m3/h and inlet ≤ 500 kPa.
- Industrial process control valves (referenced IEC 60534).
- Use in aggressive/sour gas or severely corrosive environments, and in renewable/waste gas mixes with H2 >10% unless additional data is provided.
Applications - who uses ISO 23555-2
- Manufacturers of gas pressure regulators for high‑pressure transmission and distribution networks.
- Gas network operators / utilities specifying compliant equipment for mains and transmission.
- Testing and certification bodies carrying out type, routine and surveillance tests.
- System designers, procurement and maintenance teams ensuring safe selection, installation and documentation of regulators.
- Supports compliance, safety assurance, product specification and interoperability for high‑pressure gas infrastructure.
Related standards
- ISO 23555 series (other parts, e.g., ISO 23555‑3 for SSD integration).
- IEC 60534 (industrial process control valves) - explicitly excluded from ISO 23555‑2 scope.
Keywords: ISO 23555-2:2022, gas pressure regulator, gas transmission and distribution, 10 MPa, safety testing, vent limiter, creep relief, monitor regulator.
Технические детали
- Технический комитет
- ISO/TC 161 - Controls and protective devices for gas and/or oil
- SKU
- ISO 23555-2:2022
Похожие стандарты
Стандарты, упомянутые в описании