The definition of the ball valve on Baidu Encyclopedia is: the ball valve is a valve whose opening and closing member (sphere) is driven by the valve stem and rotates around the axis of the ball valve. The ball valve can be used for fluid regulation and control. The hard-sealed V-shaped ball valve has a strong shear force between the V-shaped ball core and the metal valve seat of hard alloy surfacing, and is especially suitable for fibers containing fibers and tiny solid particles. etc. medium. The multi-port ball valve on the pipeline can not only flexibly control the confluence, diversion, and switching of the flow direction of the medium, but also can close any channel and connect the other two channels. This type of valve should generally be installed horizontally in the pipeline.
The installation of the ball valve has no direction, and there is no arrow on the valve body to indicate the direction. When the ball valve is fully opened, the fluid medium can flow in both directions, and there is no positive or negative direction. The judgment of the opening and closing direction of the ball valve is based on the position of the handle of the manual ball valve. When the direction of the handle is parallel to the direction of the valve body, the ball valve is in a fully open state, and when the direction of the handle is perpendicular to the valve body, the ball valve is in a closed state.
The ball valve has no direction distinction, this is only theoretical. In the actual installation process, we also need to consider some factors.
For example, in the installation environment, the installation of ball valves, especially manual ball valves, must be easy for people to operate. For example, for pipes close to the wall, the handle or handwheel must face outwards.
In addition, if the ball valve is installed in combination with other valves, the direction of other valves should also be considered. For example, if a one-way valve is installed in combination with the ball valve, the ball valve can only have one direction.