For industries that rely on high-performance flow control, compliance with global standards is not just a regulatory checkbox—it’s a critical aspect of operational safety, equipment reliability, and environmental responsibility. Double Block and Bleed (DBB) Valves, known for their superior isolation capabilities, are widely used in systems where safety and precision are non-negotiable. But to fully leverage their advantages, these valves must meet stringent certification and quality standards.
This article explores the key standards applicable to DBB valves and how ensuring compliance can reduce risks, improve uptime, and align your facility with global best practices.
Why Standards Matter for DBB Valves
Valves that fail under pressure or allow fugitive emissions can cause catastrophic outcomes—from plant shutdowns and fines to environmental disasters. By adhering to internationally recognized standards, industries can:
Guarantee consistent valve performance under extreme conditions
Achieve traceability and accountability
Enhance system reliability and personnel safety
Satisfy auditors and regulators
API Standards for DBB Valves
API 6D – Specification for Pipeline and Piping Valves
Covers design, testing, and documentation of valves used in pipeline transportation systems
Requires DBB valves to demonstrate pressure containment, backseat, and seat sealing capability
Specifies guidelines for valve materials, marking, and pressure testing
Why it matters: Ensures DBB valves used in oil & gas pipelines can handle long-term, high-pressure operation safely.
API 607 / API 6FA – Fire Testing
Verifies that DBB valves maintain sealing capability during and after fire exposure
Why it matters: Essential for systems handling flammable media; prevents escalation during emergencies.
ASME Standards for DBB Valves
ASME B16.34 – Valves Flanged, Threaded, and Welding End
Governs pressure-temperature ratings, wall thickness, design, materials, and testing
Applicable to a wide range of industrial valves, including DBB types
Why it matters: Confirms that valves can withstand pressure and temperature variations without failure.
ASME B31.3 – Process Piping
Involves pipe system design and safety including valve selection
Why it matters: Ensures that DBB valves integrated into piping systems support mechanical integrity.
ISO Standards for DBB Valves
ISO 10497 – Fire Type-Testing for Valves
Similar to API fire tests; ensures valves retain function and seal integrity under fire conditions
ISO 15848-1 – Fugitive Emissions Qualification
Sets standards for valve tightness to prevent emissions from escaping into the environment
Why it matters: Especially critical for chemical, gas, and pharmaceutical plants where environmental compliance is mandatory.
ISO 9001 – Quality Management Systems
While not valve-specific, ISO 9001-certified manufacturers follow strict quality control in design, manufacturing, and traceability
Compliance Checklist for Procurement Teams
When sourcing DBB valves, ensure:
Manufacturer’s certifications for API 6D, ASME B16.34, ISO 15848-1
Fire-safe test reports (API 607 or ISO 10497)
Third-party inspection and validation records
Compliance with PED (Pressure Equipment Directive) and ATEX, if applicable
Risk of Non-Compliance
Operating with non-compliant valves may lead to:
Equipment failure under pressure or temperature variation
Unsafe maintenance procedures due to lack of positive isolation
Heavy fines or shutdowns during inspections
Inability to bid for projects requiring certified equipment
Industries That Rely on Certified DBB Valves
Oil & Gas: Pipeline isolation, custody transfer, flare systems
Pharma & Biotech: Sterile process systems
Chemical Processing: Hazardous media containment
Power Generation: Turbine drain, boiler isolation
In each of these industries, certified DBB valves reduce liability, simplify documentation, and strengthen safety protocols.
Compliance with API, ASME, and ISO standards is essential for realizing the full safety and performance benefits of Double Block and Bleed Valves. Certified valves reduce operational risks, ensure system compatibility, and help facilities meet their legal and environmental obligations.
Freture Techno Pvt. Ltd. manufactures high-performance DBB valves in Mumbai, India, that meet or exceed the world’s most demanding compliance standards—supporting industrial operations that prioritize safety, sustainability, and global quality benchmarks.
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