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What is a foot valve?

2022.10.20

What is a foot valve?

The bottom valve is a unique type of lift check valve installed at the suction end of the pipeline. Most centrifugal pumps in the pneumatic type before irrigation, to drain the pump body and suction into the end of the pipeline in the gas, then there must be a check valve, in order to avoid the introduction of liquid outflow.

The bottom valve is also a check valve, to avoid the liquid pumped before starting from the pump discharge, to avoid the pump stop when the raw materials in the pump channel pipe poured into the pool resulting in no material in the channel pipeline. That again when the pump does not need to pump bottom valve, can be with a filter screen, the filter can prevent the solid particles in the liquid sucked in and blocked the pipeline and pump body.

Therefore, the bottom valve and the filter can become a combination, but they have different roles. If the channel pipe of the centrifugal pump is less than the channel of the centrifugal pump, for example, the centrifugal pump is installed on the road, the bottom valve needs to be installed at the end of the suction pipe of the centrifugal pump, which can be overloaded, the maintenance pump is not blocked, and can also be checked to ensure that the centrifugal pump channel pipe is filled and pumped.

foot valve
foot valve

The valve cover can overhandle large and fine particles. The piston valve is closed by its own weight or its own weight + elastic yellow working pressure. Piston valves have single, double and multi - valve types.

The bottom valve is set up on the valve cover several inlet pipes, and equipped with stainless steel screen, in order to reduce the injection of dirt, reduce the blocking probability of the bottom valve. Although the bottom valve is equipped with anti-blocking stainless steel screen, but the bottom valve is generally suitable for cleaning substances, viscosity and particulate matter is too large material is not suitable for the application of the bottom valve.

The bottom valve structure is ideal both from the total flow rate and from the processing technology provisions. In addition, it is not easy to cause seepage in the case of exhaust.

The bottom valve design scheme is effective, the production and manufacturing process, the installation, application and maintenance are convenient. And with small friction resistance, long service life.

The bottom valve can also be based on the operating process of all kinds of processing technology provisions will work in the material is very good mix.

The tank bottom valve as close as possible to the bottom wall of the tank, so as to achieve the actual effect of no dead Angle.

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