High-Quality 300LB Electric Top Entry DBB Ball Valve with Precise Valve Positioning Manufacturers, Factories

● Quick Maintenance: Top-entry structure and retractable seat design reduce downtime by 80%, perfect for long pipelines.

● Zero Leakage & Fire Safety: Metal hard seal + PTFE soft seal for zero leakage, designed to meet API 6FA fire safety standards.

● Precise Control: Electric actuator with ±1% positioning, integrates with DCS/PLC for remote control.

● Durable Design: Fixed ball with support structure ensures stable operation in high-pressure, large-diameter applications.

● Wide Range: Suitable for fluids from -46°C to 250°C, including crude oil, chemicals, and sour gas.

Product Description

Key Features

Efficient Maintenance
The top-entry structure and retractable seat design allow for quick, online replacement of the valve core and seals, eliminating the need for pipeline removal and reducing downtime by up to 80%.
Comprehensive Safety Protection
Includes stem blowout prevention, electrostatic grounding, and fire-safe backup seals, providing reliable protection in extreme and hazardous operating environments.
Enhanced Stability & Durability
The one-piece cast valve body reduces leak points, while the fixed ball and trunnion support structure ensure smooth, stable operation in high-pressure, large-diameter applications.
Emergency Leak Protection
Features a sealant injection port for emergency seal leakage, enabling temporary sealing and minimizing operational losses during unexpected shutdowns.

Product Description

Top Entry Ball Valve

300LB Electric Top Entry DBB Ball Valve is specifically designed for high-efficiency control in long-distance pipelines, chemical plants, and other demanding industrial applications. Featuring a top-entry structure, it allows for maintenance without pipeline removal, reducing downtime by up to 80%. The valve integrates a composite seal and DBB (Double Block and Bleed) function, ensuring zero leakage control in high-pressure fluid systems.

Constructed from corrosion-resistant materials, it is compatible with a wide range of harsh media, offering reliable performance across a wide temperature range. The electric actuator with precise valve positioning (±1%) enables seamless integration with automation systems, offering remote control capabilities for enhanced operational efficiency. With a design life of over 500,000 cycles, this valve provides long-term durability, significantly reducing maintenance costs.

Ideal for industries such as oil, gas, and chemical, this high-pressure valve is the preferred solution for reliable, low-maintenance fluid transport in critical infrastructure systems.

Technical Specifications

Parts List

Technical Specifications
Dimensions: Class 300 - Full Port
Size NPS/DN Bore (in/mm) Model / Face to Face (in/mm) D2 (in/mm) Weight (lb/kg)
B1 B2 FT RF FT RTJ FT BWE
2" / 50 1.94 / 49 1.94 / 49 11.5 / 292 11.63 / 295 11.5 / 292 7.5 / 190 121 / 55
3" / 80 2.94 / 74 2.94 / 74 14 / 356 14.13 / 359 14 / 356 9.4 / 240 276 / 125
4" / 100 3.94 / 100 3.94 / 100 17 / 432 17.13 / 435 17 / 432 11.4 / 290 507 / 230
6" / 150 5.94 / 150 5.94 / 150 22 / 559 22.13 / 562 22 / 559 14.6 / 370 606 / 275
8" 7.94 7.94 26 26.13 26 16.3 1124
Dimensions: Class 300 - Reduced Port
Size NPS/DN B1 (in/mm) B2 (in/mm) GT RF (in/mm) GT RTJ (in/mm) GT BWE (in/mm) D2 (in/mm) Weight (lb/kg)
2"×1 1/2" (50×40) 1.94 / 49 1.5 / 38 11.5 / 292 11.63 / 295 11.5 / 292 6.5 / 166 66 / 30
3"×2" (80×50) 2.94 / 74 1.94 / 49 14 / 356 14.13 / 359 14 / 356 8.3 / 210 143 / 65
4" X 3" (100×80) 3.94 / 100 2.94 / 74 17 / 432 17.13 / 435 17 / 432 10 / 255 298 / 135
6" × 4" (150×100) 5.94 / 150 3.94 / 100 22 / 559 22.13 / 562 22 / 559 12.6 / 320 551 / 250

Weight and dimensions for larger valve sizes up to 64" available on request. If you want to obtain the complete size, please contact us.

Product Operation

Frequently Asked Questions

1. What are the benefits of a top-entry ball valve structure?
The top-entry design allows for internal components to be accessed and maintained from the top without removing the entire valve from the pipeline, significantly reducing maintenance time and costs.
2. How does the DBB (Double Block and Bleed) function work?
The Double Block and Bleed function provides simultaneous sealing of both upstream and downstream sides, allowing the body cavity to be vented or drained, ensuring zero leakage in high-pressure systems.
3. Is this valve suitable for high-pressure industrial environments?
Yes, the 300LB Class rating and trunnion-mounted ball design make it ideal for high-pressure, large-diameter applications in oil, gas, and chemical industries.
4. What type of safety protection does this valve offer?
The valve includes fire-safe backup seals, stem blowout prevention, and electrostatic grounding to ensure safe operation in hazardous environments.
5. Can the electric actuator be integrated into automation systems?
Yes, the electric actuator features precise positioning (±1%) and is designed for seamless integration with remote control and automation infrastructure.
6. What is the expected design life of this valve?
The valve is engineered for durability with a design life exceeding 500,000 cycles, providing long-term reliability for critical infrastructure.

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