Butterfly valve D343 type body marked on the arrow is the direction of the media?
The arrow on the butterfly valve refers to the flow direction of the medium in the pipe. If it is installed with the medium inside the pipe, it will affect the life of the butterfly valve.
Yes, that's the direction of the medium. Never put it on the back. That is, the direction of the positive pressure, to bear the positive pressure.
It is the best direction of pressure, not the direction of the medium.The arrow marked on the valve body indicates the pressure direction of the valve. It is usually installed as a medium to mark the flow direction, and the pipe accident is caused by the wrong installation;The so-called pressure direction, refers to the valve used in closed pipeline conditions under the direction of arrow on valve body is the best under pressure, if the installation error, may occur the valve closed lax fault phenomenon;With the valve in the pipeline is not the arrow marked position, the direction of the arrow with the direction of medium are not the same, such as the outlet in the pump room within the pump, and the flow direction of the medium is the body of the arrow is reversed, as in the end into the water pump, it is consistent with the medium flow arrow, if installed in the in charge of the road, is an arrow adaptation medium flow, etc., depending on conditions and location......I hope this answer will help you.
