Check the type of pneumatic valve is analyzed

check flow pneumatic valve refers to rely on the media itself, and automatically open, her breath valve, pneumatic valve to prevent the backflow medium. Is also called the non-return pneumatic valve, one-way pneumatic valve, pneumatic valve and back pressure pneumatic valve upstream.
check pneumatic valve is automatically prevent fluid backflow of pneumatic valve. 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, the body under the action of gravity factors such as shut down automatically to prevent fluid backflow.
check the type of pneumatic valve is generally divided into the lift, swing, butterfly and diaphragm type, etc.
lift check the structure of the pneumatic valve is generally similar to stop pneumatic valve, pneumatic disc along the channel to the line in the lifting movement, reliable action, but the fluid resistance is bigger, the occasion of light is suitable for small diameter. Pneumatic valve and lift check for straight-through and vertical two kinds. Straight-through lift check pneumatic valve generally can only be installed in a horizontal pipe, and the vertical lift check pneumatic valve is generally installed in a vertical line.
swing check pneumatic valve pneumatic disc around the axis of rotation. The fluid resistance is generally less than the aerodynamic lift check valve, it is suitable for large caliber of occasions. Swing check pneumatic valve according to the number of the pneumatic valve can be divided into single swing, more than double disc swing and swing three segments. Single swing check pneumatic valve is generally applicable to medium caliber. Large diameter single swing check pneumatic valve is used in the pipeline, to reduce the water hammer pressure, had better use can reduce the water hammer pressure slowly-closing check pneumatic valve. Double disc swing check pneumatic valve applicable Yu Dazhong diameter pipeline. The pneumatic valve, double valve swing check valve structure is small, light weight, rapid developing check is a kind of pneumatic valve. Many disc swing check pneumatic valve is suitable for large diameter pipeline.
butterfly check pneumatic valve pneumatic valve's structure is similar to a butterfly. Its simple structure, small flow resistance, water hammer pressure is small.
type check pneumatic diaphragm valve has a variety of structural form, adopt the diaphragm as open-close part, hammer due to its waterproof performance is good, simple structure, low cost, rapid development in recent years. But the diaphragm type check the use of pneumatic valve temperature and pressure is limited by the diaphragm material.