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Gate Valve Installation: Horizontal or Vertical Line?
Most of the times we don't think about the installation position of gate valves to install them in horizontal line with upward stem or horizontal stem or to install them in vertical line with horizontal stem. This may be surprising for you if somebody tells you that valve manufacturers only prefer to install larger size valves in horizontal lines with vertical stem and some of them cannot guarantee the valve performance in other positions.
Even sometimes they will ask you to specify the gate valves installation position one by one to provide specific considerations for your valve to have the same performance in other positions.
But what are these technical considerations f manufacturers and finally if they can do anything for you to provide a better performance for you in vertical lines or this preferred position is only stamped on valve drawings to claim you more money!