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Forged Reduced Bore Trunnion Mounted Ball Valve with Lockable Lever Handle

High-Integrity Double Ball DBB Trunnion Mounted Valve

Forged Double Ball DBB Valve with Dual Gear Operation

Large Diameter Fully Welded Ball Valve for Natural Gas Transmission Pipeline

Fully Welded Flanged Trunnion Mounted Ball Valve

High-Temperature Hard-Seal Fixed Ball Valve with DBB Structure

Durable High-Temperature Floating Ball Valve for Severe Environments (Up to 500°C)

Cryogenic Reduce Port Floating Ball Valve with Locking Device

Cryogenic Top Entry Floating Ball Valve with Extended Stem

Hydraulic Scotch Yoke Actuated Flanged Type Trunnion Mounted Ball Valve

China Suppliers Factory Class 600 Scotch Yoke Fixed Trunnion-Mounted Ball Valve with DBB Structure for Zero Leakage

● DBB Double Block & Bleed Technology: Experience zero leakage with our dual seat design and independent bleed cavity, ensuring reliable isolation for various applications. Our product is ideal for China-based industries seeking high-quality solutions.

● Efficient Top Entry Design: Our valve facilitates quick in-line maintenance, significantly reducing downtime by up to 80%. This design is a perfect choice for suppliers aiming to enhance operational efficiency.

● Advanced Scotch Yoke Pneumatic Actuator: Achieve a fast response with low energy consumption, using 30% less energy compared to traditional cylinders. This efficient actuator is essential for factories looking to optimize energy use.

● Durable Metal Seated & Fixed Ball: Enjoy superior wear resistance and an extended lifespan, even under high-pressure conditions. Our products cater to industries in China requiring reliable performance.

● Reliable Bi-Directional Sealing: This feature ensures dependable sealing without any installation direction restrictions, making it suitable for a variety of applications in the manufacturing sector.

● Wide Temperature Range Capability: Our valves operate effectively in temperatures from -40℃ to 550℃, handling complex media types, which is vital for suppliers and factories operating in diverse environments.

Product Details

Key Features

DBB Visual Monitoring for Bleed Cavity

The bleed port allows connection to a pressure gauge or discharge pipe, enabling real-time cavity pressure monitoring. This provides early detection of potential leaks, ensuring continuous, safe operation.

Top Entry Seal Upgrade

The top-entry design features multi-layer packing combined with metal bellows, preventing stem leakage. Ideal for handling high-pressure, hazardous media, it ensures reliable sealing under extreme conditions.

Scotch Yoke Actuator with No Dead Zone

The actuator's dead-zone-free design ensures precise synchronization between valve movement and signal commands, delivering smooth control, especially in automated processes.

Fixed Ball with Low Torque Advantage

Upper and lower bearings support the ball, ensuring even load distribution on the seat. This reduces operating torque by 40% compared to floating ball valves, prolonging actuator life and enhancing performance.

Frequently Asked Questions

What is the purpose of the bleed port in a DBB valve?

The bleed port allows operators to connect a pressure gauge or discharge pipe to the cavity between the two seating surfaces. This enables real-time monitoring of cavity pressure, providing early warning of any potential internal leaks and supporting continuous, safe operation without interrupting the process flow.

How does the top-entry seal design prevent stem leakage?

The top-entry design incorporates multi-layer packing combined with metal bellows around the valve stem. This combination creates a robust, redundant sealing barrier that effectively prevents stem leakage, making it especially suitable for high-pressure or hazardous media applications where zero-emission performance is critical.

What does "no dead zone" mean in a Scotch Yoke actuator?

A dead zone refers to a range of input signal changes that produce no corresponding valve movement. A dead-zone-free Scotch Yoke actuator eliminates this lag entirely, ensuring that every signal command is immediately and accurately translated into precise valve movement. This is particularly important for automated process control requiring high repeatability and responsiveness.

Why does a fixed ball valve require less operating torque than a floating ball valve?

In a fixed ball valve, the ball is supported by both upper and lower trunnion bearings, which distribute the mechanical load evenly across the seats. This means the seats do not bear the full weight and pressure force of the ball, significantly reducing the friction torque required to operate the valve. As a result, operating torque can be reduced by up to 40% compared to floating ball designs, reducing wear on the actuator and extending its service life.

Is this valve suitable for hazardous or high-pressure media applications?

Yes. The combination of the top-entry multi-layer packing and metal bellows seal, along with the DBB bleed cavity monitoring feature, makes this valve well-suited for applications involving hazardous, toxic, or high-pressure media. The design ensures reliable containment of the media while allowing operators to continuously monitor sealing integrity.

How do these key features contribute to longer service life and lower maintenance costs?

Each feature is engineered to reduce wear, extend component life, and minimize unplanned downtime. The low-torque fixed ball design reduces actuator strain, the top-entry seal prevents leakage-related degradation, the dead-zone-free actuator reduces mechanical stress from imprecise cycling, and the DBB bleed monitoring enables predictive maintenance by detecting issues before they escalate. Together, these features significantly lower total cost of ownership.