China Suppliers Factory Class 600 Fully Welded Trunnion-Mounted DBB Ball Valve - Zero Leakage & High Safety

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China Suppliers Factory Class 600 Fully Welded Trunnion-Mounted DBB Ball Valve - Zero Leakage & High Safety

â— Achieve Zero External Leakage with Our Fully Welded One-Piece Body, Perfect for Pipeline Applications

â— Ensure Maximum Pipeline Safety through our innovative Double-Block-and-Bleed (DBB) technology

â— Experience Stable High-Pressure Performance with our robust Trunnion-Mounted Ball Design, tailored for critical operations

â— Benefit from a Fire-Safe Design equipped with Emergency Sealing Capability, ideal for rigorous environments

â— Rely on Fail-Safe Operation with features including Anti-Blowout Stem and both SPE/DPE Options for added security

â— Choose materials compliant with NACE MR0175 for Sour Service Capability, ensuring durability for challenging conditions

â— Our products are expertly designed for Underground, Subsea, and Harsh Pipeline Environments, making us a leading choice among China Suppliers and Factory manufacturers.

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Product Description

Key Features & Performance

Zero External Leakage

Fully welded one-piece body eliminates external leakage paths, ideal for subsea, underground, and harsh pipeline environments.

Stable High-Pressure Performance

Trunnion-mounted ball design ensures reliable operation under high-pressure conditions and enhances load-bearing stability.

Maximum Pipeline Safety

Double Block-and-Bleed (DBB) design provides secure isolation, safe maintenance, and enhanced operational safety.

Fail-Safe Stem Protection

The anti-blowout stem with single or double piston effect (SPE/DPE) and built-in anti-static device ensures maximum safety in flammable applications.

Sour Service Capability

NACE MR0175-compliant materials guarantee reliable performance in sour, corrosive, and challenging hydrogen sulfide environments.

Fire-Safe & Reliability

Fire-safe design and advanced sealing technology ensure long-term performance. Available in full and reduced bore for optimized flow.

Frequently Asked Questions

Q What does "zero external leakage" mean in a fully welded ball valve?

A fully welded one-piece body has no bolted connections on the outer shell, eliminating potential external leakage paths. This makes it especially suitable for subsea, underground, and environmentally sensitive installations.

Q How does the trunnion-mounted ball design improve performance?

The ball is mechanically anchored at both top and bottom, preventing it from shifting under high-pressure loads. This ensures consistent seating force and reduces wear on seals even at elevated operating pressures.

Q What is Double Block-and-Bleed (DBB) importance?

DBB provides two independent seating surfaces that seal against pressure simultaneously, with a bleed port between them. It allows operators to safely verify isolation and perform maintenance without depressurizing the entire system.

Q What is the significance of NACE MR0175 compliance?

It is an international standard for materials used in H₂S-containing environments. Compliance ensures metallic components resist sulfide stress cracking and corrosion in sour gas and oil fields.

Q How does an anti-blowout stem protect against hazards?

It features a mechanical shoulder that prevents the stem from being expelled under pressure. The built-in anti-static device dissipates static charges to ground, preventing sparks in flammable environments.

Q What actuator options are available?

These valves support manual (handwheel/gear), electric, and pneumatic actuators. They are available in full bore for pigging operations or reduced bore for cost-effective flow control.

Product Detail

China Suppliers Factory Class 600 Fully Welded Trunnion-Mounted DBB Ball Valve - Zero Leakage & High Safety

Product Description