What is a ball valve

What is a ball valve

Ball valve, the opening and closing part (ball) is driven by the valve stem and rotates around the axis of the ball valve. It can also be used for fluid adjustment and control. The hard-seal V-shaped ball valve has a strong shear force between its V-shaped ball core and the metal valve seat of hard alloy surfacing, which is especially suitable for fibers and small solid particles. And other media.

When it comes to COVNA Electric actuated ball valves, the actuator and valve combination offer long and high cycle life. 

The Electric actuated ball valves are made to the highest standard and are offered in many of sizes, materials, end connections specifications and approvals.

Fitted on to our quarter turn Electric rotary actuator, which is supplied with many standard features, but can be accessorised to suit any of your control requirements. 

Let's get in touch for the further discussions of your current project.The customized valves selection plan will be shared right on time, we promise!

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Why Choose COVNA?

Exquisite craftsmanship

Exquisite craftsmanship

Stick to the spirit of ingenuity CNC precision machining 20 years of technical engineer guidance

Technological innovation

Technological innovation

High-tech foundation Insist on innovation and development Senior technical talent team

Special custom

Special custom

Torque up to 4678nm Senior technical guide selection Special customization according to customer needs

Consistent quality

Consistent quality

ISO9001 international certification Adhere to standardized production processes 1 million cycles durability test

How Ball Valves Work

COVNA Industrial Automation Co., Ltd. was established in 2000, an automated valve specialist. Headquartered in Dongguan China, with 3 production bases located in Ningbo, Wenzhou and Dongguan. 

We Provide Electric Valve,Solenoid Valve,Pneumatic Valve,Electric Gate Valve,Electric Butterfly Valve,Pneumatic Control Valve,Motorized Valve,Pneumatic Knife Gate Valve,Control Valve Pneumatic,Pneumatic Actuated Valve,Motorized Operated Valve,Electric Ball Valve,Electric Actuated Ball Valve,Ball Valve,Gate Valve,Gate Valve,Butterfly Valve,Globe Valve,etc, You can browse related products and initiate consultations on our website.

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Company Profile:

COVNA Industrial Automation Co., Ltd. was established in 2000, an automated valve specialist. Headquartered in Dongguan China, with 3 production bases located in Ningbo, Wenzhou and Dongguan. In order to ensure the quality and performance of your products, we have been certified by  ISO9001:2015, CE, SGS, TUV, FDA and gained more than 30 patents to prove our professionalism in valve research, development and valve knowledge.
COVNA adopts German technology and processes to manufacture automated actuators with our own R&D department to provide automation solutions for different industries. Such as HVAC systems, water treatment, smart irrigation systems, shipbuilding, paper and pulp, etc.
Since 2000, we helped more than 2,000 plants with process control solutions and helped them improve production efficiency, reduce costs, and optimize profit plans.
COVNA is committed to being your reliable automated valve supplier and helping to solve the automatic solution for your applications.
Our goal always is to offer an integrated turnkey valve solution to you and save time, save cost and win the project.


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As a professional electric ball valve manufacturer, COVNA aims to provide our customers the best quality products with the most competitive pricing, on-time delivery and full warranty service with omprehensive service from start to finish, encompassing consultation through to after sales service, full support in every respect and ensure that you are accompanied at each stage of your project.

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The workmanship is in place, and the quality is very good at a glance!


Regular customers, the cooperation has been very happy!


The workmanship is fine, the size is right, the design is in place, and the service is attentive and attentive!

Frequently Asked Question

Do you have any question?

Ball valves are valves which permit or halt the flow of media through a pipeline. A typical ball valve includes an inlet, outlet, and a housing for the valve itself, which is commonly a spherical shape and hollow. A stem--which fits snuggly into a slot at the top of the ball--rotates the ball to an open or closed position.

The ball valve is composed of valve body, sphere, valve seat, valve stem, bracket and driving device.

The working principle of the ball valve is to make the valve unblocked or blocked by rotating the valve. The ball valve switch is light and small, can be made into a large diameter, reliable sealing, simple structure, convenient maintenance, the sealing surface and the spherical surface are often closed, and it is not easy to be eroded by the medium. It is widely used in various industries.

Our updates and blog posts

ball-valve | Where the butterfly valve is applicable

{keyword},Butterfly valves are suitable for flow regulation. Since the pressure loss of the butterfly valve in the pipeline is relatively large, it is about three times that of the gate valve.

ball-valve | How to choose electric butterfly valve

{keyword}.The disc of the butterfly valve is that the disc has a shaft rotating on the position of the valve seat. The angle of the rotation determines the opening and closing degree of the valve.

ball-valve | Gate valve movement

{keyword},Most gate valves are forcibly sealed, that is, when the valve is closed, the gate must be forced against the valve seat by external force to ensure the tightness of the sealing surface.

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