High-Quality Twin Ball DBB Trunnion ‑Mounted Ball Valve with Worm Gear Supplier, Factories

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High-Quality Twin Ball DBB Trunnion ‑Mounted Ball Valve with Worm Gear Supplier, Factories

â— Leak-Free Safety: Twin Ball DBB with full-seal design prevents leaks, minimizing risk and downtime.

â— Effortless Operation: Worm gear reduces torque, enabling single-person control even for large high-pressure valves.

â— High-Pressure Durability: Heavy-duty body and trunnion support withstand Class 1500 pressures and media impact.

â— Versatile Functionality: Independent twin balls act as dual isolation or emergency shut-off, replacing multiple valves.

â— Long Service Life: Premium materials and precision sealing extend valve life by 30%+, cutting maintenance and replacement costs.

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Product Description

💡 Key Features

Twin Ball DBB Design

Dual trunnion-mounted balls with central bleed provide double block-and-bleed isolation, safe pressure release, and leakage monitoring for high-risk media.

Enhanced Safety Features

Engineered with fire-safe, anti-static, and anti-blowout stem design, ensuring reliable operation under high-pressure and hazardous conditions.

Heavy-Duty Body & Support

Forged steel body with robust trunnion support handles high-pressure, high-flow applications, delivering long-term durability and stable performance.

Versatile Control & Easy Operation

Twin balls can be operated independently or synchronously, supporting dual-line flow, merging, or emergency shut-off, while worm-gear drive reduces torque for easier manual control.

📘 Product Description

Twin Ball DBB Trunnion Mounted Ball Valve with Worm Gear delivers reliable double block-and-bleed isolation for high-pressure pipelines. Featuring a heavy-duty forged steel body, trunnion-mounted twin balls, and a worm-gear handwheel, it ensures leak-free safety, effortless single-person operation, and long-term durability.

Engineered with fire-safe, anti-static, and anti-blowout stem design, this high-performance valve supports dual-line flow, merging, or emergency shut-off, making it ideal for oil & gas, chemical, power, and industrial applications.

🛠️ Parts List

1	Right Body	8	Gasket	15	Seat Retainer	22	Key	29	Packing	36	Stem Bearing
2	Nut	9	"O"-Ring	16	Spring	23	Bolt	30	"O"-Ring	37	"O"-Ring
3	Stud	10	Spring	17	Packing	24	Pin	31	Thrust Washer	38	Gasket
4	"O"-Ring	11	Seat Retainer	18	"O"-Ring	25	Connection Plate	32	Stem Bearing	39	Lower Cover
5	"O"-Ring	12	Seat	19	Thrust Washer	26	Nut	33	Thrust Washer	40	Bolt
6	Thrust Washer	13	Ball	20	"O"-Ring	27	Bolt	34	Stem	41	Drain Valve
7	Packing	14	Seat	21	Worm-Gear	28	Packing Box	35	Body

❓ Frequently Asked Questions

What is a Twin Ball DBB Valve?

A Twin Ball DBB (Double Block and Bleed) valve consists of two independent balls in a single body. It provides two separate seals and a bleed point to ensure zero leakage and safe maintenance.

How does the trunnion-mounted design benefit operation?

The trunnion-mounted design supports the ball from both top and bottom, reducing operating torque and preventing seat wear, which is essential for high-pressure applications.

Can the two balls be operated separately?

Yes, the twin balls can be operated independently or synchronously, allowing for flexible flow control, including merging or isolation of different lines.

What safety standards do these valves meet?

These valves are engineered with fire-safe, anti-static, and anti-blowout stem designs to ensure reliability in hazardous and high-pressure industrial environments.

Why is a worm gear used for operation?

A worm gear provides a mechanical advantage, significantly reducing the manual force required to open or close large-diameter or high-pressure valves.

Product Detail

High-Quality Twin Ball DBB Trunnion ‑Mounted Ball Valve with Worm Gear Supplier, Factories

Product Description