Do you know the selection standards of check valve manufacturers?

We know that check valve manufacturers are generally in order to prevent media counterflow, so they install them on equipment, equipment and pipelines. It is generally suitable for cleaning media and should not be used for media containing solid particles and high viscosity. But there are many types, how should we choose the right type, the following Xiaobian take you to understand.

Check valve manufacturers

First, the vertical lift type is usually selected on a horizontal pipe with a nominal diameter of 50mm. The straight-through type can be installed on both horizontal and vertical pipes. However, for the inlet pipe of the pump, the bottom valve should still be used. The bottom valve is usually installed in the vertical pipe at the pump inlet, and the medium should flow from the bottom up.

In addition, if it is a lifting rotary type with good sealing and large fluid resistance, a horizontal valve should be installed on the horizontal pipe and a vertical valve should be installed on the vertical pipe. The installation position of the swing check valve is not limited, it can be installed on the horizontal, vertical or inclined pipeline, such as installed on the vertical pipeline, the medium flow should be from the bottom to the top.

There is also a butterfly check valve that can be installed in an unlimited position on a horizontal pipe, or on a vertical or inclined pipe. Another diaphragm type check valve is suitable for situations where water hammer is easy to occur on the pipeline, because the diaphragm can well eliminate the water hammer phenomenon generated when the medium backflow, so it is usually used in low-pressure normal temperature pipelines, especially suitable for tap water pipelines.

Check valve manufacturers introduce the spherical check valve, which is mainly suitable for middle and low pressure pipelines and can be made into large caliber. These are the general selection standards of the check valve, but in the actual selection also pay attention to select the type of check valve that may meet the required closing speed, so as to pick a more suitable product.