Can a butterfly check valve be installed upside down?
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Butterfly check valve, spring-type, intended for vertical installation; the flow of water is from top to bottom, and the direction of the check valve is consistent with the flow direction of the water. I’m not sure if it’s feasible; no relevant evidence has been found yet. I’d like to ask everyone for their advice
Inversion is not allowed; consult the manufacturer.
According to the principle of a check valve, it should be possible. It can function only by creating a pressure difference at both ends of the valve. For example, if the fluid is at rest or flowing in reverse, it will shut off regardless of the direction. It might be helpful to draw a schematic diagram; marking the pressures will make it clear at a glance. However, it is still necessary to follow the installation requirements provided by the manufacturer. For reference.
The pump is at the front, and behind it are pipes leading to the tank
Inversion is possible, but it carries certain risks (related to the valve spring over time)!
Butterfly check valves can be installed horizontally (with the arrow parallel to the horizontal ground) or vertically (with the arrow perpendicular to the horizontal ground); generally, those with a DN of 400 or larger are installed horizontally. https://www.hbzhan.com/tech_news/detail/851304.html