How should TRUNNION in ball valves be translated? Is it an ear shaft?
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A TRUNNION VALVE is a fixed valve, but as for the exact translation of \"TRUNNION\", looking at the drawings it seems to refer to a bolt that connects to the valve shaft; however, according to dictionaries it means a kingpin
A trunnion is essentially a pivot shaft; it corresponds to the lower valve stem, and it is used to hold the ball in place, which is why it is called a fixed-ball valve. My personal understanding. .
The term “fixed axis” is generally used, meaning that the sphere is fixed in the horizontal direction by this axis, and it applies to fixed spheres.