ISO 12619-4-2016 PDF

Full title and description

Road vehicles — Compressed gaseous hydrogen (CGH2) and hydrogen/natural gas blends fuel system components — Part 4: Check valve. This International Standard specifies requirements and definitions for check valves used in CGH2 and hydrogen/natural gas blend vehicle fuel systems, including design principles, instructions and marking requirements.

Abstract

ISO 12619‑4:2016 defines general requirements and terms for check valves intended for use in compressed gaseous hydrogen (CGH2) and hydrogen/natural gas blend fuel systems for road vehicles (as defined in ISO 3833). It covers design principles and requirements for instructions and markings, and it identifies specific exclusions such as liquefied hydrogen upstream components, fuel containers, stationary gas engines, container mounting hardware, electronic fuel management and refuelling receptacles. Applicable fuel quality references include ISO 14687‑1/‑2 and ISO 15403‑1 (and ISO/TR 15403‑2).

General information

• Status: Published (confirmed).
• Publication date: August 2016 (published 11 August 2016).
• Publisher: International Organization for Standardization (ISO).
• ICS / categories: 43.060.40 (Fuel systems).
• Edition / version: Edition 1 — ISO 12619-4:2016.
• Number of pages: 5.

Scope

Specifies general requirements, definitions and design principles for check valves used in compressed gaseous hydrogen (CGH2) and hydrogen/natural gas blend fuel system components for road vehicles (ISO 3833 vehicle types). The standard applies to vehicles using CGH2 (per ISO 14687‑1/‑2) and hydrogen/natural gas blends (per ISO 15403‑1 and ISO/TR 15403‑2). It explicitly excludes liquefied hydrogen (LH2) components upstream of and including vaporizers, fuel containers, stationary gas engines, container mounting hardware, electronic fuel management and refuelling receptacles.

Key topics and requirements

• Definitions and general requirements for check valves used in CGH2 and hydrogen/natural gas blend vehicle systems.
• Design principles addressing safe operation with compressed hydrogen and hydrogen/natural gas blends.
• Requirements for instructions, marking and identification of component function and service limits.
• Construction, assembly and test considerations specific to check valves (materials, pressure/temperature capability and leakage behaviour).
• Reference to fuel quality and compatibility standards (ISO 14687‑1/‑2, ISO 15403‑1 / ISO/TR 15403‑2) and vehicle type definitions (ISO 3833).

Typical use and users

Used by automotive manufacturers, fuel‑system component designers and suppliers (check‑valve manufacturers), test laboratories, certification and conformity assessment bodies, and regulatory authorities working on hydrogen and hydrogen‑blend vehicle fuel systems. Also referenced by system integrators and safety engineers developing or validating onboard compressed hydrogen fuel systems.

Related standards

This part is one element of the ISO 12619 series for CGH2 and hydrogen/natural gas blend fuel system components; commonly referenced related documents include ISO 12619‑1 (general requirements and definitions), ISO 12619‑2 (performance and general test methods), ISO 12619‑3 (pressure regulator) and ISO 12619‑5 (manual cylinder valve). It is also used alongside fuel quality and vehicle‑type standards such as ISO 14687‑1/‑2, ISO 15403‑1 and ISO 3833.

Keywords

Compressed gaseous hydrogen, CGH2, hydrogen/natural gas blends, fuel system components, check valve, road vehicles, fuel system safety, ISO 12619, fuel quality, ISO 14687, ISO 15403, ISO 3833.

FAQ

Q: What is this standard?

A: ISO 12619‑4:2016 is the International Standard that specifies requirements and definitions for check valves used in compressed gaseous hydrogen (CGH2) and hydrogen/natural gas blend fuel systems for road vehicles.

Q: What does it cover?

A: It covers general requirements, definitions, design principles, marking and instructions for check valves in CGH2 and hydrogen/natural gas blend vehicle fuel systems, and lists specific exclusions (for example LH2 upstream components, fuel containers and refuelling receptacles).

Q: Who typically uses it?

A: Vehicle OEMs, fuel‑system and valve manufacturers, test laboratories, certification bodies, safety engineers and regulators involved in hydrogen vehicle systems.

Q: Is it current or superseded?

A: ISO 12619‑4:2016 is published and was last reviewed/confirmed (remains current) by ISO during the periodic review cycle. Consult ISO or national standards bodies for the latest confirmation status before use.

Q: Is it part of a series?

A: Yes — it is Part 4 of the ISO 12619 series covering CGH2 and hydrogen/natural gas blend fuel system components; other parts address general requirements, test methods, pressure regulators, manual cylinder valves and additional component types.

Q: What are the key keywords?

A: Compressed gaseous hydrogen, hydrogen blends, fuel systems, check valve, vehicle fuel component, ISO 12619, fuel quality, safety, markings.