The role of the bottom valve in the safe operation of the water pump ？

Many customers receive pumps delivered by ATACH, especially those that require self-priming and have a height difference for water intake. 

They do not understand the emphasis made by ATACH technicians that a bottom valve must be installed at the water intake end of the water inlet pipe. 

Now we make an analysis:

The core function of the ‌ bottom valve for the safe operation of the water pump is to prevent water backflow, keep the pipeline full of water, avoid cavitation and impurities from entering, thereby protecting the water pump equipment and improving operational efficiency ‌.

Prevent water from flowing back

The bottom valve, as a check valve, only allows water to flow from the water source to the pump. It automatically closes when the pump stops, preventing water in the suction pipeline from flowing back to the water source and avoiding pipeline emptying. 

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Keep the pipeline full of water

After the pump stops, the bottom valve maintains the full water state of the pump body and the suction pipeline, reducing the trouble of repeatedly priming water during startup. It is especially suitable for scenarios with frequent starts and stops or unattended operation. 

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Avoid cavitation and air binding

Emptying the pipeline can cause air to enter the pump body during startup (air binding phenomenon), reducing efficiency and even damaging the equipment. The bottom valve ensures the smooth start of the water pump by maintaining a full water state to prevent air from being sucked in. 

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Filter impurities

Some bottom valves are equipped with filter screens, which can intercept impurities such as sand and aquatic plants in the water source, reducing the risk of wear and clogging on the pump impeller.

Improve operational efficiency

By reducing the operation of priming water and preventing equipment damage, the bottom valve simplifies the maintenance process, lowering energy consumption and labor costs.