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COVNA is a valves and actuators manufacturer. We offer solenoid valve, electric actuator valve, pneumatic actuator valve and manual valve for your project. In this video, we will show you the working principle, features, applications of COVNA solenoid valve. We are always here to help you resolve the problem and offer the best valve solution …

Are you preparing to install a sprinkler system or simply replace some sprinkler valves and you are tired of the cheapy ones you typically find at the home centers or hardware stores? In this video I will show you the best professional-grade valves and where to get them. I will ALSO go over some repair …

Hi, this is COVNA Wafer type butterfly valve. It can be manual operated by lever or gear operated. Also it can be controlled by Pneumatic actuator or Electric actuator. For Pneumatic actuator, it can be both Double acting or Single acting. For Electric actuator, there are ON/OFF Type, Regulation type or Intelligent type actuator. Regarding …

Hi, this is COVNA sanitary type butterfly valve with FDA certification. It can be manual operated like this, or it can be Electric actuated or Pneumatic actuated. For the Pneumatic actuator, it can be both Double acting or Single acting. And for Electric actuator, it can be ON/OFF Type, Regulation type or Intelligent type. Regarding …

Let’s see how the pneumatic floating ball valve working! Pneumatic floating ball valve with a pressure range from 0 to 40bar. What’s more, we provide floating ball valve in manual operated and electric operated type for your choice. Offical website: Offical email:

COVNA electric valves test in raining condition

Hi, this is COVNA Quarter-turn Electric actuator. There are 3 types of control: ON/OFF Type, Regulation type and another Intelligent type with LED touchable screen. By Regulation type and Intelligent type, you can use 4-20mA signal to control the opening degree. Now you can see that we have a manual override function, which means that …