Help, help, pump outlet line
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Is the pump filling line above this outlet line? In the second picture, why is there no such inverted valve above the outlet pipeline?
The vent valve facing the sky in the first picture is not the pump filling line, it is just the vent valve at the high point of the pump outlet. When filling the pump, open the valve there (it is recommended to lead the pipe to the ground). After seeing the liquid medium, it indicates that the outlet pipeline (pump) has been filled, and you can proceed to the next step of heating the pump or other pump opening (or backup) work. There is no upward vent valve at the high point of the pump outlet in the second picture, possibly because its operating conditions are different from those of the pump in the first picture. In fact, when filling the pump, open the pouring area after the pump outlet one-way valve and see the liquid medium, which means that the pump has been filled.
Who designed it? Haha~~~The piping seems to be the work of the Design Institute of Luoyang University~~~
Thank you. In fact, the photo did not capture it clearly. In the first picture, there is a small water cooler on the shield pump. There is a DN15 tank pump line on the water cooler. The pump returns to the tank, but venting to the sky is more suitable for tank pumps.
Theoretically, the medium is not allowed to be directly vented to the atmosphere.