ISO 7165:2017

Overview

ISO 7165:2017 - Fire fighting - Portable fire extinguishers - Performance and construction is the international standard that specifies principal safety, reliability and performance requirements for portable fire extinguishers. Applicable to fully charged extinguishers with a maximum mass of 20 kg (extendable to 25 kg subject to local acceptance), this third edition (2017) defines test methods, construction criteria and performance benchmarks used worldwide for design, testing and certification.

Key topics and technical requirements

The standard covers a comprehensive set of technical areas relevant to portable extinguishers, including:

• Classification of extinguishers and suitability for fire classes (A, B, C, D, F).
• Extinguishing media and propellants: requirements for CO2, clean agents, powders, foam concentrates and water-based agents, plus filling and charge tolerances.
• Pressure and mechanical tests: test pressure, minimum burst pressure, crushing and permanent volumetric expansion tests for cylinders.
• Operating performance: minimum effective discharge time, bulk range of discharge, resistance to temperature changes, intermittent discharge and low‑temperature performance.
• Leakage and retention: routine retention checks, partial-discharge behavior and long-term leakage tests.
• Corrosion and durability: external and internal corrosion tests (including for water-based media), resistance to impact and vibration.
• Special tests: tapping test for powder extinguishers, electrical conductivity of discharge (for water-based agents), and construction specifics for high- and low-pressure cylinders.
• Test fires and rating: detailed procedures for Class A, B, D and F test fires, operator safety, extinguishment criteria and test scheduling.

Applications and who uses this standard

ISO 7165:2017 is used by:

• Manufacturers designing and producing portable fire extinguishers to meet international performance and construction requirements.
• Test laboratories and certification bodies performing type approval, routine testing and compliance verification.
• Procurement officers and facility managers specifying compliant extinguishers for buildings, industrial sites and transportation.
• Regulators, inspectors and fire safety engineers establishing acceptance criteria, maintenance intervals and installation practices.
• OEMs and installers integrating extinguishers into safety systems and equipment.

Practical benefits include improved product safety, consistent test methods for performance rating, and harmonization across markets for easier regulatory acceptance and trade.

Related standards

ISO 7165 is used alongside national and regional regulations and other international standards for fire testing, extinguisher maintenance and fire safety management (for example, regional EN standards and national fire protection codes). When specifying extinguishers, consult both ISO 7165 and applicable local rules.