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Question:

Horizontal installed gate valve, stop valve stem should be in the first half of the range,

here's "first half week" refers to what?

Answer:

It is better to be within 45 degrees of the vertical direction.
Jul 19, 2017
The first half of the pipeline is through the central line of the pipe and the vertical line of the central line of the pipeline above the upper half of the surface, in fact, is a circle arc (upper half arc).
Jul 19, 2017
For example, fire pump, water pipe, gate valve, to see this side to the horizontal 90 degrees, turn 90 degrees in the opposite direction
Jul 19, 2017

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