When installing the check pneumatic valve or closing the matters needing attention

check pneumatic valve is a pneumatic valve can automatically prevent fluid backflow. Check the pneumatic valve pneumatic valve under the effect of fluid pressure open, fluid flow from inlet side to side. When the import side pressure is lower than the export side, pneumatic valve in the fluid pressure difference, itself under the action of gravity factors such as shut down automatically to prevent fluid backflow. Check the pneumatic valve: generally divided into lift, swing, butterfly and four types such as horizontal.
check pneumatic valve installation, should pay special attention to flow direction of medium, should make medium and normal flow direction with the direction of the arrow indicating the pneumatic valve, otherwise it will be truncated normal flow of the medium. Hand moving valve should be installed at the bottom of the pump suction pipe.
check pneumatic valve is closed, will be in the middle water hammer pressure tube, serious will cause the damage of the pneumatic valve and pipeline or equipment, especially for big or high pressure pipe lines, so should check the height of the pneumatic valve selection is attention.
check check inverse as a pneumatic valve pneumatic valve, one-way pneumatic valve or non-return valve, its purpose is to prevent the backflow medium pipeline directional flow without function. The pump suction style pneumatic valve also belong to the check valve class. Check according to the structure, pneumatic valve can be divided into the lift check pneumatic valve, swing check valve and butterfly check
three kinds of pneumatic valve. Aerodynamic lift check valve can be divided into vertical and horizontal two kinds. Swing check pneumatic valve is divided into single type, more than double disc type and disc type 3 kinds. Butterfly check pneumatic valve as straight through. The above several check pneumatic valve in the connection form can be divided into the threaded connection, flange connections and welding of three.
check flow pneumatic valve refers to rely on the media itself, and automatically open, her breath valve, used to prevent the backflow medium pneumatic valve, pneumatic valve, also known as non-return, one-way pneumatic valve, pneumatic valve and back pressure pneumatic valve upstream. Check pneumatic valve belongs to a kind of automatic pneumatic valve, its main role is to prevent the backflow medium, to prevent the pump and drive motor reversal
, and the discharge of the container medium. Check the pneumatic valve can also be used to give the pressure could rise to more than the system pressure of the auxiliary system supply piping.
check pneumatic valve mainly can be divided into pneumatic valve, swing check In accordance with the center of gravity rotating) Pneumatic valve and lift check ( Move along the axis) 。 Check this type of pneumatic valve pneumatic valve's role is only allowed to medium flows in one direction, the direction and stop the flow. This pneumatic valve is normally automatic work, in a direction of flow of fluid pressure, pneumatic valve open; In the opposite direction of fluid flow, the fluid pressure and pneumatic disc from the overlap of pneumatic disc on the pneumatic seat, thereby cutting off flow.