How to swing check valve works

Swing check valve, also known as the reverse (flow) valve, which is used for one-way flow pipe to prevent the media back to the automatic valve, relying on the pressure of the pipeline medium flow to open or close the valve, can be divided into single , Double petal and multi-petal three,

Belonging to one of the more commonly used valves. Swing check valve is generally applicable to the fluid medium is more clean pipe, not suitable
for large viscosity or contain solid particles of the working conditions, otherwise it will lead to check valve opening is not sensitive, can not be completed.

The fluid is also not reliable enough to stop because of fully sealed. Swing check valve only allows the media to flow in one direction, can effectively prevent the media back to prevent accidents.

Swing check valve of the valve and the rocker is connected together, which can be rotated around the pin angle. When the pipe fluid flows in the specified direction (from left to right), the flap inlet pressure is higher than the outlet pressure, and the disc is pushed away from the valve seat.

The pin is rotated and the valve is in the open position. When the pressure on both sides of the valve to reduce to a certain time, the valve flap, and back to the closed state. When the fluid from right to left flow, that is, reverse the reverse flow, the valve on the right side of the pressure is higher than the left pressure.

The pressure generated by pressure on both sides of the valve will be pressed on the valve seat, the fluid can not pass, the media can not be reversed; and the greater the pressure of the fluid, the sealing surface pressure is tight, the better the sealing effect.

The mounting position of the swivel check valve is not restricted. It can be installed horizontally in the pipe or on a vertical or inclined line. However, if it is mounted on a vertical pipe, the flow direction of the medium should be downward.

swing check valve