Problem with the cooling water inlet valve and return water butterfly valve! ! ! !
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Is the installation direction of the butterfly valves for the cooling water inlet and outlet opposite to, or the same as, the flow direction of the cooling water? Why do I see that some butterfly valves on the cooling water are in one orientation while others are in the opposite orientation? ? Find 999
Personally, I think the installation of butterfly valves has little to do with the flow direction of the cooling water. Generally, the return water pipes are installed side by side; different flow directions are likely due to considerations regarding installation space and ease of operation. I would also appreciate the teachers' guidance.
Agree with the second-floor opinion. Butterfly valves usually have on/off indicators, and the valves should be operated according to these indicators in practice.
I have encountered this issue; in fact, it is said that the valve disc of a butterfly valve has a surface that bears force, and when the valve is closed, this pressure-bearing surface faces in the direction of the fluid. However, the distinction is not entirely strict; the installation direction can be adjusted when the handwheel gets in the way.
The installation of butterfly valves takes into account the spatial layout primarily; there are few requirements regarding direction, as the main thing is to be able to operate the handwheel. Improper installation can pose significant risks to the operators. Especially for process water, the valves can become stuck over time, and an F wrench is required for operation
In essence, butterfly valves have no directionality, so no matter how they are installed, it will not have a significant impact on their actual use. However, when the butterfly valve remains in the open position for an extended period, it is difficult to achieve a tight seal when closed
Ordinary butterfly valves have no direction requirement. It seems that there are requirements for three-eccentric butterfly valves.
Butterfly valves have a direction of flow; some manufacturers can produce ones that are capable of two-way flow, while others can only handle one-way flow. Generally, in butterfly valves with dual sealing, the seal upstream of the shaft is of better quality and requires more torque, whereas the seal downstream of the shaft is of lower quality but requires less torque. I am referring to double-eccentric butterfly valves