Knowledge About Valves

  • 5 Pneumatic Globe Control Valve Manufacturers

    Pneumatic control valve is one kind of valve for precise flow regulation. In this article, we will list 5 pneumatic globe control valve manufacturers for your reference. Hope it could help you save time.  COVNA is a Chinese brand and founded in 2000. We create and supply control valve for flow r...
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  • 5 Electric Butterfly Valve Manufacturers

    Electric butterfly valve is one kind of valve which could help control remotely. Widely used in flue-gas desulfurization, denitrification system, remineralization and so on. In this article, we will list 5 electric butterfly valve manufacturers for your reference and hope it could help you know a...
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  • 5 Actuated Knife Gate Valve Manufacturers

    5 Actuated Knife Gate Valve Manufacturers

    The opening and closing part of the knife gate valve is a gate, the movement direction of the gate is perpendicular to the direction of the fluid, and the medium is cut by a blade-shaped gate that can cut fiber materials. Therefore, the knife gate valve is very suitable for controlling viscous me...
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  • Top 5 Actuator Gate Valve Manufacturers In Italy

    Top 5 Actuator Gate Valve Manufacturers In Italy

    The gate valve is a linear valve. The gate valve can only be fully opened or fully closed, which is suitable for transport and shut-off the medium.  COVNA create and supply actuator gate valves like electric gate valves and pneumatic gate valves for your projects.  Helping you increase productivi...
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  • Conventional Electric Actuators VS Miniature Electric Actuators

    The electric actuator is automated mechanical equipment used to control the opening and closing of ball valves, butterfly valves, globe valves, gate valves, plunger valves, etc. With the advancement of science and technology and the increasing demand for production efficiency, the demand for ele...
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  • Top 6 Electric Automated Actuator Manufacturers

    Electric automation actuator is a device used to help industrial automation. It can achieve the purpose of remote control by receiving or feeding back signals. COVNA is an automatic actuator and valve manufacturer from China. We have 22 years of experience in the automation valve industry. We bel...
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  • How To Maintain The Valve?

    A valve is a device for controlling fluids, gases or solids. Regular maintenance can increase the service life and durability of the valve. In this article, we will show you how to maintain the valve. Why Maintain The Valve? 1. Save money Regular maintenance may cost money, but the maintenance co...
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  • 5 Automated Ball Valve Manufacturers

    5 Automated Ball Valve Manufacturers

    Automated ball valve is a device that could help you fluid control easier. Available in electric automated ball valves and pneumatic automated ball valves. Widely used in remineralization, oil removal system, softening plants and so on.  COVNA is a specialist of automated ball valves and we creat...
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  • Linear Actuators VS Rotary Actuators

    Actuator is a mechanical device that can help us achieve automation. According to the motion mode, actuators can be divided into linear actuators and rotary actuators. According to its different motion modes, the actuator can be applied in different industries and equipment. In this article, we w...
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  • Top 5 Automated Butterfly Valve Manufacturers

    Top 5 Automated Butterfly Valve Manufacturers

    Automated butterfly valve available in electrically operated type and pneumatically operated type. Both for transport and shut-off flow rate. In order to make the valve match the needs of various industries, COVNA develops and produces various types of automatic butterfly valves for you to choose...
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  • Ball Valves VS Plug Valves

    Ball Valves VS Plug Valves

    Ball valves and plug valves are two commonly used valves. In fact, the ball valve evolved from the plug valve. In principle, the ball valve can also be regarded as a special plug valve. The plug valve core is cylindrical or cone-shaped, while the ball valve core is spherical. In this article, we ...
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  • TOP 5 Automated Rotary Actuator Manufacturers

    The automated rotary actuator is a industry device which could help fluid control remotely and easier. COVNA supplies all kinds of automated rotary actuators like electric actuators and pneumatic actuators for your options. Helping you increase productivity. Welcome any inquiries from you! sales@...
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