Overview
ISO 6182-18:2025 - Fire protection - Automatic sprinkler system - Part 18: Requirements and test methods for flexible sprinkler hose is the first-edition ISO standard that defines performance, marking and test methods for flexible sprinkler hose assemblies. It applies to hoses with fittings, attachments and anchoring components intended for direct connection to a single fire sprinkler in installations using flexible connections (examples: clean rooms, suspended ceilings, exhaust ducts). The document sets out required tests, manufacturer marking and installation information, and quality control expectations.
Key topics and requirements
The standard addresses both product requirements and detailed test methods. Important technical topics include:
- Design and dimensions
- Nominal sizes, hose length, inlet/outlet fittings and end connections, minimum inside diameter.
- Materials and tolerances
- Material selection and manufacturing tolerances to ensure consistent performance.
- Performance tests
- Leakage and dimensional examinations
- Hydrostatic strength and vacuum tests
- Pressure cycling (multiple options) and high-pressure flow
- U‑bend and arc‑bend fatigue tests
- Vibration and anchoring-component mechanical strength
- Pressure loss / equivalent length determination
- High and low temperature exposure
- Corrosion and cracking resistance (salt spray, moist ammonia air stress cracking, stress corrosion)
- Metallic coating thickness measurement (gravimetric, X‑ray, magnetic methods)
- Marking and documentation
- Required product markings, manufacturer’s installation instructions and quality control/testing records.
The document contains prescriptive test procedures (see clauses on test methods) and normative references to measurement and coating standards.
Applications and who uses it
ISO 6182-18:2025 is intended for:
- Manufacturers of flexible sprinkler hoses, fittings and anchoring devices (product design, verification and factory testing)
- Fire protection engineers and system specifiers selecting flexible attachments for sprinkler systems
- Test laboratories performing conformity and type testing against performance and durability criteria
- Installers and building owners who need compliant installation instructions and marked products for clean rooms, suspended ceilings, ducts and other areas requiring flexible connections
- Regulators and approval bodies assessing product compliance and safety documentation
Related standards
Normative references cited in ISO 6182-18:2025 include ISO 7-1, ISO 1460, ISO 2064, ISO 2178, ISO 3497, ISO 3575 and ISO 4998. ISO 6182-18 is part of the broader ISO 6182 series on automatic sprinkler systems.
Keywords: ISO 6182-18:2025, flexible sprinkler hose, automatic sprinkler system, fire protection, test methods, hydrostatic strength, pressure cycling, U-bend fatigue, marking, manufacturer installation instructions.