[email protected]
Home > Forged Steel Ball Valve > China High-Integrity Double Ball DBB Trunnion Mounted Valve - Reliable China Suppliers & Factory for Oil, Gas, Pipeline Solutions Manufacturer, Supplier
China High-Integrity Double Ball DBB Trunnion Mounted Valve - Reliable China Suppliers & Factory for Oil, Gas, Pipeline Solutions Manufacturer, Supplier
1 / 1
China High-Integrity Double Ball DBB Trunnion Mounted Valve - Reliable China Suppliers & Factory for Oil, Gas, Pipeline Solutions Manufacturer, Supplier

China High-Integrity Double Ball DBB Trunnion Mounted Valve - Reliable China Suppliers & Factory for Oil, Gas, Pipeline Solutions Manufacturer, Supplier

,

√ Achieve true double isolation with our innovative independent dual ball design, a hallmark of quality from our China-based factory.
√ The integrated block and bleed system ensures precise pressure control, making it a reliable choice for suppliers in the oil, gas, and pipeline industries.
√ Our trunnion-mounted construction guarantees dependable performance, even under high-pressure conditions.
√ The compact integrated assembly minimizes connections, significantly reducing the potential for leaks.
√ Specially engineered for the demanding requirements of oil, gas, and pipeline service, our products meet the highest industry standards.
√ Trust in SLVCN’s 30+ years of manufacturing expertise and our commitment to supplying global projects with top-quality solutions.

,
Send Inquiry

Product Description

Key Features

True Double Block

Two independent balls provide complete upstream and downstream isolation, ensuring zero leakage.

Built-In Bleed Port

Quickly release cavity pressure and easily check for leaks—safer and more reliable.

Trunnion-Mounted Stability

Trunnion-mounted design reduces torque and keeps sealing performance consistent under high pressure.

Compact DBB Design

Dual block and bleed integrated in one body—fewer connections, less chance of leaks, and easier installation.

Easy Maintenance

Bolted body design allows fast inspection and simple component replacement, saving time and effort.

Fire-Safe & Anti-Static Stem

Built to prevent static build-up, withstand fire, and eliminate stem blowout risks—perfect for oil, gas, and critical pipelines.

Frequently Asked Questions
Q
What is a Double Block and Bleed (DBB) ball valve?
A Double Block and Bleed (DBB) ball valve uses two independent seating surfaces that simultaneously seal against pressure from both directions, while a built-in bleed port allows cavity pressure to be vented or monitored. This design provides superior isolation and leak verification in a single compact unit.
Q
What is the advantage of a trunnion-mounted ball valve over a floating ball valve?
Trunnion-mounted ball valves have the ball mechanically anchored at the top and bottom, which significantly reduces operating torque under high-pressure conditions. This ensures consistent sealing performance, longer service life, and easier actuation compared to floating ball valves, especially in large-diameter or high-pressure applications.
Q
What does fire-safe and anti-static mean for a ball valve?
A fire-safe design ensures the valve maintains a reliable seal even when soft seating materials are damaged by fire, using metal-to-metal backup seating. Anti-static features provide a conductive path to dissipate static electricity that may build up during operation, reducing the risk of sparks—critical for oil, gas, and flammable fluid pipelines.
Q
How does the bleed port work on a DBB valve?
The bleed port is located on the valve body between the two ball seats. When both balls are closed, the bleed port can be opened to release any trapped pressure in the cavity, confirm that both seals are holding correctly, or drain residual fluid before maintenance. This makes it a critical safety and verification feature in process pipelines.
Q
What industries commonly use DBB ball valves?
DBB ball valves are widely used in oil and gas production, petrochemical processing, natural gas transmission, offshore platforms, and other critical pipeline systems where reliable isolation, leak prevention, and safe maintenance access are essential requirements.
Q
How does the bolted body design simplify maintenance?
The bolted body design allows the valve body to be disassembled without removing it from the pipeline. Technicians can quickly access internal components such as seats, seals, and the ball for inspection or replacement. This reduces downtime, lowers maintenance costs, and extends the overall service life of the valve.

Related Products

China Class 300 Trunnion-mounted Forged Steel Ball Valve Supplier, Factories

China Class 300 Trunnion-mounted Forged Steel Ball Valve Supplier, Factories
High-Quality Class 2500 / 6000 PSI Forged DBB Trunnion-Mounted Ball Valve Manufacturer, Factory

High-Quality Class 2500 / 6000 PSI Forged DBB Trunnion-Mounted Ball Valve Manufacturer, Factory
China 300LB Forged DBB Trunnion-Mounted Ball Valve for Gas Pipeline Manufacturers, Factories

China 300LB Forged DBB Trunnion-Mounted Ball Valve for Gas Pipeline Manufacturers, Factories
China 900LB Forged DBB Trunnion-Mounted Cryogenic Ball Valve Manufacturer, Suppliers

China 900LB Forged DBB Trunnion-Mounted Cryogenic Ball Valve Manufacturer, Suppliers
China Class300 Forged DBB Trunnion-Mounted Ultra-Low Temperature Ball Valve Suppliers, Factories

China Class300 Forged DBB Trunnion-Mounted Ultra-Low Temperature Ball Valve Suppliers, Factories
China Class 900 Reduced Port Forged DBB Trunnion-Mounted Cryogenic Ball Valve Manufacturers, Factories

China Class 900 Reduced Port Forged DBB Trunnion-Mounted Cryogenic Ball Valve Manufacturers, Factories
China Stainless Steel Twin Ball DBB Valve with Dual Manual Handles Manufacturer, Factory

China Stainless Steel Twin Ball DBB Valve with Dual Manual Handles Manufacturer, Factory
High-Quality Twin Ball DBB Trunnion ‑Mounted Ball Valve with Worm Gear Supplier, Factories

High-Quality Twin Ball DBB Trunnion ‑Mounted Ball Valve with Worm Gear Supplier, Factories
OEM Reducing Flanged Twin Ball Double Block and Bleed Valve Suppliers, Factories

OEM Reducing Flanged Twin Ball Double Block and Bleed Valve Suppliers, Factories
High-Quality Integrated Twin Ball DBB Valve with Dual Stems Manufacturers, Suppliers

High-Quality Integrated Twin Ball DBB Valve with Dual Stems Manufacturers, Suppliers