ISO 15848 Gate Valves
What ISO 15848 requires for gate valves — applicability, key and testing requirements, the alternative standards, and compliant supply with full certification.
What does ISO 15848 require for gate valves?
ISO 15848 (Measurement, Test, and Qualification Procedures for Fugitive Emissions - Industrial Valves, International Organization for Standardization (ISO)) sets the design, material and testing requirements for gate valves in its scope. ISO 15848 defines the test procedures and acceptance criteria for fugitive emissions (stem leakage) from industrial valves - primarily the leakage of volatile organic compounds (VOCs), methane, and other greenhouse gases around the stem packing. ISO 15848 compliance is increasingly required by EU regulations, US EPA Method 21, and project specifications to meet environmental and climate targets.
Applicable Pressure Classes
Key Requirements
- Leak Class A: <1 ppm methane - highest emission-tightness, required for VOC-critical service
- Leak Class B: <100 ppm methane - standard 'low-emission' qualification
- Leak Class C: <500 ppm methane - basic fugitive emission control
- Thermal cycling requirements (for high-temperature service) - Part 1
- Mechanical endurance cycles (500–2500 cycles for gate/globe, 20,000–150,000 for ball/butterfly)
- Production test: 100% stem leakage test with calibrated detector
Testing Requirements
- Type test per ISO 15848-1 (qualification)
- Production test per ISO 15848-2 (100% or AQL sampling)
- Helium or methane tracer gas
- ISO-accredited test facility certificate
Alternative Standards for Gate Valves
Other standards that also govern gate valves — useful for spec cross-acceptance.
Related Standards
Connected Engineering
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