Fully Welded Ball Valves

Thoroughly-Tested Fully Welded Ball Valves

Applied in extreme working conditions, such as in natural gas, urban heating, and long-distance pipelines, fully-welded ball valves are bound over the whole cross-section to overcome higher loads. As such, stress corrosion cracking and external contamination are actively averted to increase the service life of our valves.

DomBor Valve’s supply network and third-party 3C laboratories help us produce fully welded valves that follow industry regulations. As an industrial valve manufacturer, our valves, which come in front welding, middle welding and side welding seam types, have an economical design that can save you a lot of money in the long run. To ensure tightness, we conduct ultrasonic and hardness tests to determine the strength and durability of our valves.

The Lowest-Cost Strategy Is To Choose Reliable DomBor Valves.

DomBor Valve, with its experienced specialists, specializes in manufacturing industrial valves and provides technical support and one-stop solutions for the global market.

China Fully Welded Ball Valve Factory

Dombor is one of the leading fully welded industrial ball valve manufacturers across the globe. Thanks to our state-of-the-art fully welded ball valve factory that’s filled with cutting-edge technologies, 5 production lines, and competent workers, we are able to deliver the best quality products and meet bulk orders within the shortest time.

Designed with a complete forged body, fully welded ball valves are produced to ensure zero leakage, making them the most common type of fully welded valves in many industries like petroleum, petrochemical, natural gas, shipbuilding, and power plants.

Engineer Servicing a Pneumatic Valve

Features of Our Fully Welded Ball Valves

Dombor fully welded ball valves are put through stringent manufacturing and inspection processes, such as ultrasonic and hardness tests to determine their strength and durability. With this, stress corrosion cracking and external contamination are actively averted to boost the valve’s service life.

  • Body Material: Carbon steel, stainless steel, alloy steel, etc.
  • ANSI/API, BS, DIN, JIS, GB, CE, and ISO standards.
  • Compact and light design.
  • Fully welded with cylindrical or spherical body.
  • Forged body and fire-safe construction.
  • Contains no nuts or bolts, which ensures zero leakage.
  • High resistance to load and pressure.

Advantages of Fully Welded Ball Valves

The design and build-up of the fully welded ball valve by Dombor is spectacular as it possesses outstanding properties and advantages. Some of them are:

  • Gives maximum strength at minimum weight, as well as maximum resistance to pipeline pressures and stresses.
  • The valve’s design eliminates body flanges, which reduces the overall size and leakage paths.
  • Ideal for buried service applications to reduce potential leak points and decrease the chances of fugitive emissions from flanges.
  • Having a valve seat made of PTFE seal ring and spring, the valves are highly adaptable to pressure and temperature changes.
  • According to the pipeline’s construction and design specifications, the valve’s body length and the stem’s height can be customized.

Applications of Dombor Fully Welded Ball Valves

Dombor is one of the leading fully welded ball valve suppliers with several high-quality valves that are used in many industries.


Our fully welded ball valve is used to control the flow of natural oil and gas to ensure there’s nothing blocking its smooth operation. These valves ensure that there’s no leakage even in high and low pressure.

Pipeline Industry

With valves from our fully welded ball valve factory, the transport of fluids through pipes will be seamless as there will be no blockage, clogging, or vibration. Dombor fully welded ball valve are used to maneuver the flow of fluid and act as emergency shut-offs to prevent spills.

Refinery and Petrochemical Industry

Dombor’s welded ball valves are used to manage the flow of chemicals to avoid contamination of separate lines of products. They provide tight seals that ensure corrosive chemicals are safely handled.

Wastewater Treatment

One of the major characteristics of our fully welded ball valves is that they don’t have nuts and bolts. They are fully forged in steel, which prevents leakages.

Marine and Ship

Fully welded ball valve manufacturer Dombor supplies welded valves that are used in marine and ship building and activities as they are resistant to all external components. These valves are very strong and unaffected by harsh conditions.

Power Generation

To control power generated, the fuel has to be managed. With our fully welded ball valves, gas and liquid fluid flow can be controlled to be accurate.

Fully Welded Ball Valves

Dombor is one of the leading fully welded ball valve manufacturers. A fully welded ball valve is a valve, the body of which does not contain any nuts or bolts, which ensures zero leakage from the body as the body of the valve is fully welded. We design the valve’s body in such a manner that the thickness of the valve helps avoid the cavities from shrinking and helps prevent even the minimal holes or cracks.

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Structure Of Fully Welded Ball Valve

Fully welded ball valves come in various structures; the structures of a fully welded valve can either be cylindrical or spherical. In the case of a spherical welded valve, the body contains only one seam, which is welded, while in a cylindrical valve, two seams are welded.


The torque of a welded body ball valve is small, while the structure of the valve is tight. The packing is such that there are low or zero emissions from the body and is also fire safe; the lifespan of such a valve can go up to 30 years. The machine’s combination is made so that the machine ensures a higher strength with a very low weight. These are generally used for the transmission of gas and oil.

Why do You Need Fully Welded Ball Valves

Fully welded ball valves are specially manufactured to be resistant to high temperature and high pressure, which makes them versatile and applicable across several sectors. Fully Welded Ball Valves are the most commonly used for onshore petrochemicals and offshore petrochemicals.


Thanks to their zero leakage performance and mechanical properties, many industries use these welded ball valves because of their zero leakage performance, and their shape remains the same even after being exposed to harsh chemicals and conditions.

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20+ Years Experience as a Fully Welded Ball Valve Manufacturer

Dombor is one of the trusted and reliable fully welded ball valve manufacturers worldwide for the production of high-quality products, including V-port ball valves. Having over two decades of professional experience, we’ve become experts in meeting every unique demand. Here are some reasons why you should choose us as your preferred fully welded ball valve suppliers.

Tailor-made Valve Solution

We offer customized fully welded ball valves to guarantee that our products fits your application standards and demand. They are uniquely made to your preference.


At Dombor, we have a Minimum Order Quantity as low as 1 product. This is to ensure that each customer’s order is fulfilled, especially those with a tight budget.


All our products are in strict compliance with global regulatory standards and specifications, such as ISO, API, MSS, and ASME to make sure that only the best quality is delivered.

Fast Delivery

Dombor is a reliable business partner; Our fully welded ball valve factory contains rapid manufacturing machinery that makes production and delivery extremely fast.

After Sales Service

After you’ve gotten your fully welded ball valve. We offer warranties and 24/7 customer service, providing you with all the technical assistance you need.

China Fully Welded Ball Valve Sourcing Guide


As a fully welded and 3-way ball valve manufacturer, we’ve provided a short note below on some facts you need to know before sourcing for your fully welded ball valves. 


What is a Fully Welded Ball Valve

A fully welded ball valve is a type of ball valve with a completely forged body that does not have any nuts or bolts, which ensures zero leakage. The valve is designed to be extremely strong and the thickness helps avoid shrinking cavities, holes, or cracks.


Components of a Fully Welded Ball Valve

Valve body

This component is produced by welding partially forged shells after assembly. The structure is made to be compact and integrated. The wall thickness can be made to be very thin, the valve weight made to be light, while the resistance to pipeline bending and extrusion is enhanced.

Rotary Valve Seat

The design of the rotary valve seat is incredible. When the valve is almost close or just opened, the narrow point between the ball valve and the valve seat is scoured at high speed. This is because of the fluid throttled into high-speed turbulent flow, which becomes the most severely worn area of the valve seat’s seal.

Valve Stem

The valve stem has a PTFE sealing material in the upper area, which is a low-friction and aging-resistant material with a long service life. It also has a sealing grease injection system.

Pressure release device

The fully welded ball valve is equipped with a pressure release pipeline that’s connected to the middle cavity, which works by leading the pressure generated during the valve functioning out of the ground.

How does a Fully Welded Ball Valve Work

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The fully welded ball valve comes with a spherical or cylindrical closure unit that provides on/off control of low. 

It has a bore through the center and when the valve is positioned in such a manner that the bore is aligned with the pipeline’s direction, it is in the open position and fluid can flow through it smoothly. But when rotated 90⁰, the bore is set to be perpendicular to the flow direction, which means the valve is closed and fluid cannot pass through.

animated Logo of dombor

Generating high-quality valve solutions requires a deep insight into market needs. DomBor Valve, as a reliable valve manufacturer, relies on a trusted supply network, the latest production, and assembly machinery, along with digital design capabilities and 20 years of industry experience.

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