This is the first time I’ve seen a valve like this
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As shown in the picture, this is the first time I’ve seen such a valve. What is the purpose of the fins on top of the valve? Aren’t all control valves designed to have low inlet and high outlet? Why is the flow in this direction?
The fins above the valve body are heat sinks. Valves do not necessarily all have low inlet and high outlet.
Valves with heat sinks, used in high-temperature applications.
It belongs to high-temperature heat dissipation pneumatic control valves. The high-temperature valve cover is equipped with radiators, making it suitable for applications where the medium temperature ranges from -60 to +450°C.
A single-seat valve has low inlet and high outlet, while a sleeve valve has high inlet and low outlet.
The valve stem is equipped with fins. I have also encountered valves with fluid flow from the top to the bottom; the supplier’s explanation was that for large-diameter valves, usually those over 200 mm in diameter, the seal at the valve seat is not tight when fluid flows from the bottom to the top
The fins are there for heat dissipation; this must be a valve that operates in high-temperature conditions, with fluid entering from the lower side and exiting from the higher side.
Self-sealing globe valve with fins as heat sinks, used in high-temperature pipelines
Low-in-high-out type has a check function. . .