SIST EN ISO 17879:2018 PDF

Overview

EN ISO 17879:2017 - Gas cylinders: Self-closing cylinder valves - Specification and type testing specifies design, type testing, marking, and manufacturing tests for self-closing cylinder valves fitted to refillable transportable gas cylinders conveying compressed, liquefied or dissolved gases. The standard focuses on the valve’s function as a closure and is widely used in the calibration gas and beverage industries. It uses gauge pressure values (bar is the unit used in the document; 1 bar = 100 000 Pa).

Key topics and requirements

EN ISO 17879:2017 covers technical and safety aspects including:

• Valve design requirements
  • Suitability of materials and corrosion resistance
  • Valve connections and mechanical compatibility with cylinders
• Mechanical strength and durability
  • Resistance to hydraulic burst pressure
  • Resistance to mechanical damage and impact
• Operating performance
  • Self-closing mechanism reliability and endurance testing
  • Leak tightness (internal and external) requirements
• Safety-related tests
  • Resistance to ignition and acetylene flashback
  • Oxygen pressure surge tests (see annexes)
• Type testing and documentation
  • Test sample selection, test schedules, required test gases and temperatures
  • Test reports and traceability
• Manufacturing controls and marking
  • Production inspection, acceptance criteria and mandatory valve markings

Normative annexes in the standard detail mechanical strength tests, acetylene tests, oxygen pressure surge tests and manufacturing test procedures.

Applications and practical value

This standard is practical for ensuring safe, reliable self-closing valves used on transportable gas cylinders. Typical applications include:

• Calibration gas cylinders for laboratories and instrument calibration
• Beverage industry cylinders (e.g., CO2 dispensing systems)
• Any refillable gas cylinder service where self-closing closure functionality is required

Using EN ISO 17879:2017 helps reduce leak and ignition risks, ensures mechanical robustness, and provides a common baseline for type approval and conformity assessment.

Who uses this standard

• Valve manufacturers and designers
• Gas cylinder manufacturers and assemblers
• Test laboratories and certification bodies performing type testing
• Quality and safety engineers in gas supply, beverage, and calibration industries
• Regulators and procurement teams specifying valve performance

Related standards

• ISO 10297 - standard cylinder valves
• ISO 17871 - quick‑release cylinder valves
• ISO 21011 / EN 1626 - valves for cryogenic vessels (not covered by EN ISO 17879)
• ISO 14245 - self‑closing LPG cylinder valves
• Regional standards for portable fire extinguishers (e.g., EN 3 series)

Keywords: EN ISO 17879:2017, self-closing cylinder valves, gas cylinders, type testing, valve specification, calibration gas, beverage industry, valve marking, manufacturing tests.