Knowledge About Valves

  • How To Prevent Valve Corrosion?

    How To Prevent Valve Corrosion?

    COVNA, an automation solution provider. We focus on manufacturing actuator valves since 2000. Corrosion is one of the important factors causing valve damage, therefore, in the use of valves, corrosion protection is the first consideration. Principle Of Valve Corrosion The corrosion of metals is m...
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  • Select Valve According To Flow Characteristic

    Select Valve According To Flow Characteristic

    Selection of valve first to master the performance of the media, flow characteristics, as well as temperature, pressure, flow rate, flow, and other performance, and then, combined with the process, operation, safety factors, select the corresponding type, structure, type and specification of the ...
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  • 5 Common Faults Of Pneumatic Actuator Ball Valve And The Treatment Methods

    5 Common Faults Of Pneumatic Actuator Ball Valve And The Treatment Methods

    The fault processing speed and accuracy of pneumatic actuator ball valve determine the extent of production equipment affected, maintenance personnel’s responsibility is to quickly and accurately determine and deal with the fault site, so as to minimize the production affected losses. The ...
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  • Safety Requirements For Safety Valves

    Safety Requirements For Safety Valves

    Safety Valve is one of the three indispensable safety accessories on the boiler. It plays an important role in controlling the pressure limit value and protecting the boiler. When the pressure in the boiler rises above the specified value, the safety valve automatically opens to relieve pressure ...
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  • 11 Basic Knowledge Points About Valve

    11 Basic Knowledge Points About Valve

    1. The basic parameters of the valve are: Nominal pressure PN, nominal diameter DN 2. The basic function of the valve: cut off the connecting medium, adjust the flow, change the flow direction 3. The main ways of valve connection are: Flange, thread, welding, clamp, wafer 4. Valve pressure: diffe...
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  • Installation And Maintain Of High Pressure Solenoid Valve

    Installation And Maintain Of High Pressure Solenoid Valve

    High-pressure solenoid valve is a very widely used product in fluid transportation equipment. It is usually used in conjunction with pipelines, pumps and other fluid transportation equipment. Widely used in spray systems, car wash systems, etc. In this article, we will show you how to install a h...
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  • Characteristics And Application Of Pneumatic Actuator Ball Valve

    Characteristics And Application Of Pneumatic Actuator Ball Valve

    Pneumatic Actuator Ball Valve is composed of ball valve equipped with pneumatic actuator. The pneumatic actuator is divided into double-acting pneumatic actuator and single-acting pneumatic actuator. Pneumatic Ball Valve can realize intelligent control, quickly open or close the pipeline, can eff...
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  • 5 Characteristics Of Solenoid Valve

    5 Characteristics Of Solenoid Valve

    Solenoid valve is the comment used valve. They have various types for choose. Available in high-temperature type, high-pressure type, anti-corrosive type, waterproof type. Any demand for valve, feel free to contact us at sales@covnavalve.com (1) Zero Leakage And Safe Internal and external leakage...
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  • What Is A Qualified Electric Actuator?

    What Is A Qualified Electric Actuator?

    1. There should be enough torque for the actuator whose output is turning angle and enough force for the actuator whose output is linear displacement to overcome the resistance of load. In particular, high-temperature and high-pressure valves, its sealing packing pressure is tight, after a long t...
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  • 13 Ways To Extend Valve Life

    13 Ways To Extend Valve Life

    The main function of the valve is to isolate equipment and piping system, regulate flow, prevent backflow, regulate and discharge pressure, is the control component of the fluid piping system, the role is very important. Therefore, in the ordinary use of the process need to pay attention to valve...
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  • COVNA Motorized Ball Valve For HVAC

    COVNA Motorized Ball Valve For HVAC

    As a motorized ball valve manufacturer, COVNA’s goal is to provide the quality valve for you. Consult us to get a free valve solution. sales@covnavalve.com COVNA’s HK62 series Miniature Motorized Ball Valve is a part turn (90 degrees) ball valve with a compact design. The reason why i...
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  • What Is The Difference Between Hard Sealing And Soft Sealing Butterfly Valve?

    What Is The Difference Between Hard Sealing And Soft Sealing Butterfly Valve?

    Hard Seal Butterfly Valve Butterfly Valve hard seal refers to: Both sides of the sealing pair are metal materials or hard other materials. The sealing performance of this seal is poor, but high-temperature resistance, anti-wear, good mechanical properties. Such as stainless steel, cast iron, cast...
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