DBB Ball Valve Manufacturer

Gowin, Your Reliable Chinese Partner in DBB Ball Valves

Trusted DBB Ball Valve Solutions with 24h Support

GOWIN is a leading China DBB ball valve manufacturer with over 16 years of expertise, specializing in industrial valves that meet API 6D, ASME, and international standards. Our DBB ball valves feature a double block and bleed structure, providing safe isolation, reliable shutdown, and easy pipeline maintenance for oil & gas, petrochemical, and power projects.

Key Features:

● Double isolation and bleed design for safe operation

● Compliance with API 6D, ASME, and other global standards

● Suitable for high-pressure, high-temperature, and corrosive environments

● Compact, efficient design to reduce leak points and installation space

Specifications & Options:

● Materials: WCB, A105, Stainless Steel, Duplex, Alloy

● Size Range: 1/2″-16″ (DN15–DN100)

● Pressure Class: 150LB–600LB

● End Connections: RF, RTJ, BW, THR, SW

Partner with GOWIN, a trusted DBB ball valves supplier, for reliable quality and expert support, with inquiries answered within 24 hours.

What DBB Ball Valves Does GOWIN Offer?

As a professional dbb ball valve manufacturer, GOWIN provides a diverse range of DBB solutions designed for different project requirements:

Compact structure suitable for small and medium pipelines, ensuring reliable shut-off.

Heavy-duty design for high-pressure, large-diameter applications.

Space-saving design, widely used in instrument connections.

Dual ball mechanism for enhanced isolation and safety.

One-piece body design, reducing leak paths and improving reliability.

All of our dbb ball valves are manufactured to precise specifications. Below is a detailed overview

Feature	Specification
Standards	ASME, API, JIS, BS, DIN, GB, JB, HG
Size Range	1/2"–16" (DN15–DN100)
Pressure Class	150LB–600LB (0.6Mpa–10.0Mpa)
Connection	RF, RTJ, BW, THR, SW
Materials	WCB, A105, LCB, LC3, CF8, CF8M, CF3, CF3M, CF8C, CF10M, CG8M, WC1, WC6, WC9, F11 etc.
Temperature	-196℃ to 650℃
Medium	Water, Oil, Gas
Operation	Lever, Wrench, Gear, Electric, Pneumatic, Hydraulic
Packing	Suitable for Sea / Air Transport

Why Choose GOWIN?

Why Global Distributors and EPCs Choose GOWIN

As a professional dbb ball valve manufacturer, GOWIN provides a diverse range of DBB solutions designed for different project requirements:

As a professional dbb ball valve manufacturer, GOWIN’s technical team provides custom non-standard valve designs based on specific client data sheets and complex working conditions. We are one of the few manufacturers in the industry willing to provide detailed drawing support, which helps clients finalize their project plans more effectively.

We understand the critical nature of project timelines. GOWIN has a strong reputation for keeping delivery promises, even accelerating production during holidays like the Chinese New Year to meet urgent deadlines.

Our international service team combines local agents with a professional technical support team from our China headquarters. This dual-line support system ensures rapid problem-solving and efficient communication, no matter where your project is located.

Our core technical engineers have over a decade of industry experience. Many have graduated from specialized valve engineering programs, giving them an in-depth understanding of international standards and the ability to handle high-difficulty projects.

What is a DBB Ball Valve?

A DBB ball valve integrates double block and a bleed in one unit, replacing three valves. It minimizes leak points, saves space, and cuts installation costs. Designed to API 6D/ASME B16.34, it ensures safe isolation for calibration, maintenance, and critical pipeline applications.

DBB Ball Valve Design & Materials

Each china dbb ball valve from GOWIN is engineered for superior performance and longevity, especially in demanding environments like oil and gas, petrochemical, and water treatment. Key design features include:

Blow-out Proof Stem

The stem is designed with an integral T-type shoulder, ensuring it cannot be blown out by medium pressure, enhancing operational safety.

Anti-Static Device

Our valves feature anti-static devices between the ball, stem, and body, preventing sparks caused by friction and mitigating the risk of fire or explosion.

Fire-Safe Design

GOWIN dbb ball valve made in china are fire-safe, certified to API 607 and API 6FA standards. In the event of a fire, a secondary metal-to-metal seal prevents internal leakage.

Robust Materials

We use a wide range of materials, including Carbon Steel, Stainless Steel, Duplex, Inconel, and Titanium, ensuring the valve is perfectly suited for high-pressure, high-temperature, or corrosive media.

Full Traceability

Our production process is fully traceable, from raw material procurement to final product delivery, providing full quality assurance for every dbb ball valve supplier or end-user.

DBB Ball Valve Supplier Quality Certifications

GOWIN’s commitment to quality is validated through rigorous testing and certification. This ensures that every ball valve dbb we produce is reliable and safe.

Our key certifications and testing standards include:

● API 6D: American Petroleum Institute standard for pipeline valves.

● ISO 9001, ISO 14001, OHSAS 45001: For quality, environmental, and occupational health management systems.

● API 607 & API 6FA Fire Test: Certifies our valves for fire safety in critical applications.

● ISO 15848: Fugitive emissions testing, ensuring minimal leakage.

● CE & TS Certification: Compliance for European and Chinese markets.

Ensure performance through our ball valve dbb supplier team.

Where Are DBB Ball Valves Used?

GOWIN’s DBB ball valves — floating, trunnion, monoflange, twin ball, and integral — are built for critical fluid control across industries.

Oil & Gas

Used for safe pipeline isolation and refinery processes, our DDB ball valve factory ensures reliability in high-pressure and high-corrosion environments.

Petrochemical

Our valves provide tight shut-off and double isolation, which is crucial for chemical plants and hazardous material processing.

Power & Mining

In power plants and mining/metallurgy operations, our dbb ball valves manufacturer supplies robust solutions for high-temperature and abrasive conditions, ensuring long-term stable operation.

Marine & Offshore

Our compact DBB design is ideal for space-constrained platforms and FPSOs, offering superior corrosion resistance and enhanced safety for fluid control.

Water Treatment

We provide reliable fluid control solutions for large-scale water treatment and supply projects.

DBB Ball Valve FAQs

What certifications do your DBB ball valves have?

Our valves hold a full range of international certifications, including API 6D, API 607, ISO 9001, CE, and more. These are crucial for project bidding in the oil & gas and petrochemical industries, and they ensure our valves meet strict global quality and safety standards.

Can GOWIN produce custom DBB ball valves?

Yes. We specialize in custom manufacturing based on client data sheets and specific project conditions. Our engineering team can provide technical drawings and customized non-standard solutions, which is a key advantage of working with a direct china dbb ball valve factory.

What is your typical lead time, and can you handle urgent orders?

Our lead time is competitive, and we pride ourselves on delivering on our promises. As demonstrated in our case studies, we have a proven track record of expediting urgent orders, even during holidays, to meet tight project schedules for our partners.

Are your valves suitable for high-corrosion or offshore environments?

Yes. We offer specialized materials like Duplex Stainless Steel, Inconel, and Titanium, which are ideal for marine, offshore, and other highly corrosive working conditions. Our fire-safe and low-emissions designs are also a perfect fit for these applications.

What is the DBB feature in a ball valve?

A DBB (Double Block and Bleed) feature integrates two isolation valves and a bleed valve in one unit, providing absolute isolation, reducing leak points, and improving safety.

What is the purpose of a floating ball valve?

A floating ball valve allows the ball to move slightly, using line pressure to improve the seal against the seat, ensuring reliable shut-off in medium- and low-pressure applications.

What is the purpose of a trunnion in a ball valve?

A trunnion-mounted ball valve has additional support for the ball at the top and bottom, reducing operating torque and enabling stable sealing in high-pressure applications.

What is a monoflange valve?

A monoflange valve features a single flange connection, simplifying installation and providing a compact design suitable for limited-space applications.

What is a twin pressure valve?

A twin pressure valve, or twin ball DBB valve, uses two balls to achieve double isolation, allowing safe venting and bleed operations between the balls.

What is the difference between a type 1 and type 2 ball valve?

Type 1 ball valves typically have a standard port design, while type 2 valves include features like extended bore, reinforced sealing, or higher-pressure rating for specialized applications.

Contact Your China DBB Ball Valve Factory

Whether you are an EPC contractor seeking a reliable ball valve DDB supplier, a distributor looking for a high-quality product line, or an agent interested in a long-term partnership, GOWIN is ready to work with you. Contact us today to discuss your project needs or explore partnership opportunities.