What is the function of the cross-line design of the centrifugal pump outlet check valve?
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The centrifugal pump, medium water, and outlet check valve have a 1-inch jumper added. What is the function?
The purpose of the cross-line design of the centrifugal pump outlet check valve is to avoid the backflow of the medium. When the pump stops working, the cross-line can ensure that the medium does not flow back into the pump. At the same time, crossing the line can also reduce resistance, reduce pressure loss, etc., further improving system efficiency. Therefore, in a centrifugal pump system where the medium is water, adding a 1-inch jumper can play these roles. .
I didn’t write clearly what the medium is. The first possibility is to purge the return line, which is the return line in which the medium is blown back with nitrogen. There is no need to remove the check valve. The second possibility is the reply from the masters of each building, which makes sense.
If the drawings are not fully displayed, is it possible to flush and repair the pump when there is a problem with the pump? Or pipe replacement? The main pipe is DN80 and the branch is 1 inch: lol
I think you are talking about the function of the one-way valve in the first half of the sentence. When the pump is running normally, this 1-inch line is not used, so I don't agree with the second half of the sentence. I agree with the views of other brothers downstairs.
From a practical point of view, it is generally used as a filling pump and heating pump line.
Warm pump lines are generally available for high-temperature oil pumps above 200°C. The medium is water.
After the pump stops, evacuate the material in the check valve pipeline to facilitate inspection and maintenance and prevent water from freezing and damaging equipment, etc.
After the pump is shut down, drain the material in the pipeline behind the check valve to facilitate maintenance of the pump outlet pipeline.