OEM Forged Double Ball DBB Valve with Dual Gear Operation Factories, Factory

√ True Double Block and Bleed for Zero-Risk Isolation

√ Online Bleed Verification Ensuring Seal Integrity

√ Heavy-Duty Forged Trunnion Design for High Pressure Service

√ Compact Dual Isolation Replacing Multiple Valve Installations

√ Engineered for Critical Oil & Gas Applications

√ 30+ Years Severe Service Manufacturing Experience

√ Exported to 100+ Countries Worldwide

Product Description

Key Features
🛡️ True Double Block and Bleed Isolation
Two independent balls provide positive dual isolation, replacing traditional two-valve assemblies in one compact body.
🔍 Integrated Cavity Vent
Allows pressure monitoring and safe cavity discharge to confirm seal integrity during online operation.
🏗️ Heavy-Duty Forged Trunnion
Designed for high pressure service with fire-safe, anti-static, and blowout-proof safety protection.
⚙️ Automation-Ready
ISO 5211 interface with flexible materials and pressure ratings for critical oil & gas applications.
Product Description

The forged twin ball DBB (Double Block and Bleed) ball valve is a high-integrity isolation solution designed for oil, gas, and petrochemical pipeline systems. The true twin-ball dual sealing structure provides reliable upstream and downstream isolation with zero-leak performance, significantly improving operational safety in critical processes.

The double block and bleed design features two independent sealing barriers and a central cavity bleed port for pressure monitoring and safe discharge during maintenance. The forged trunnion-mounted body ensures high strength, stable operation under high pressure conditions, while reducing operating torque and extending service life. Dual worm gear operation provides smooth and precise manual control in demanding environments.

Widely used in oil and gas transmission, refineries, and chemical processing industries, we offer customized material, size, and pressure rating solutions. Each valve undergoes strict quality testing to ensure reliable long-term performance.

Frequently Asked Questions
Q1: What is the primary advantage of a Twin Ball DBB valve?
A: It provides two independent levels of isolation in a single unit, which saves space, reduces weight, and decreases the potential for leak paths compared to traditional multiple valve systems.
Q2: Why is the forged body construction important?
A: Forged steel offers superior mechanical properties, including higher strength and resistance to impact and fatigue, which is essential for high-pressure oil and gas applications.
Q3: How does the cavity vent function during operation?
A: The bleed port allows operators to vent the cavity between the two balls to verify that the seals are holding pressure, ensuring absolute isolation before maintenance begins.
Q4: Are these valves suitable for automated systems?
A: Yes, the valves feature an ISO 5211 mounting pad, making them ready for easy integration with pneumatic, electric, or hydraulic actuators.
Q5: What safety features are integrated into the design?
A: Our DBB ball valves include fire-safe design, anti-static devices, and blowout-proof stem construction as standard safety features.
Q6: In which industries are these valves most commonly used?
A: They are widely used in upstream oil and gas production, midstream transmission pipelines, refineries, and large-scale chemical processing plants.

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