Knowledge About Valves

  • Top 5 Solenoid Valve Manufacturers

    Top 5 Solenoid Valve Manufacturers

    Solenoid valve is an automated device for automation solutions. Features include compact design and responsive. COVNA supplies various kinds of solenoid valves for your projects. Like general-purpose type, high-pressure type, high-temperature type, anti-corrosive type and so on. Any demand for va...
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  • 5 Multi-Turn Electric Actuator Manufacturers

    5 Multi-Turn Electric Actuator Manufacturers

    Multi-turn actuators are mainly used to control the opening and closing of linear motion valves, such as gate valves and stop valves. When a multi-turn actuator is used with a turbine, it can also be used to control the opening/closing of ball valves and butterfly valves. In this article, we wil...
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  • TOP 5 Pneumatic Rotary Actuator Manufacturers

    Pneumatic rotary actuator is an automated device to help fluid control. Its features include cost-effective, responsive, safe, explosion-proof and eco-friendly. Available in spring return type and double acting type. COVNA is a manufacturer of rotary actuators and valves with 22 years of experien...
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  • What Is Scotch Yoke Pneumatic Actuator?

    What Is Scotch Yoke Pneumatic Actuator?

    The Scotch Yoke pneumatic actuator is a stroke piston-type actuator, which is suitable for the on-off or metering control of the valve with a 90°rotation angle, like ball valve, butterfly valve, etc. By filling compressed air into the cylinder, the piston is pushed to move linearly. The piston us...
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  • Top 5 Electric Butterfly Valve Suppliers

    Electric butterfly valve refers to a butterfly valve equipped with an electric actuator. The valve is opened or closed by being driven by an electric actuator. Can help you easily realize industrial automation. COVNA group is a specialist of automated actuators and valves in China with 20+ years...
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  • TOP 5 Stainless Steel Automatic Ball Valve Manufacturers In UK

    TOP 5 Stainless Steel Automatic Ball Valve Manufacturers In UK

    Stainless steel automatic ball valve widely used in waste treatment, wastewater treatment, power plant, food and beverage, and so on. COVNA create and supply all kinds of automatic ball valve for you like food grade type, 3-piece type, etc. Any demand for valves, welcome consult us at sales@covna...
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  • Corrosion Of Metal Valve And Application Of Synthetic Material Valve

    It is well known that metal corrosion damage has a considerable impact on valve life, reliability and service life. The action of mechanical and corrosive factors on the metal greatly increases the total wear of the contact surface. The total amount of wear on the frictional surface of the valve ...
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  • How To Install The Control Valve?

    Control valve is an automated device for precise regulation of flow. Available in pneumatically operated type and electrically operated type. In this article, we will introduce to you how to install the control valve for your reference. Let’s check it out! Read the manual Read the Instructi...
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  • How Butterfly Valve Works

    Butterfly valves are one of the most commonly used industrial valves at present. The butterfly valve and the ball valve belong to the quarter-turn valves series. We only need to turn the valve stem a quarter turn, and the disc will rotate 90 degrees around the valve stem to open or close the valv...
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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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