Is the flange extension length the same as the distance from the equipment’s centerline to the flange surface?
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As follows: The take over size is φ630X10; it serves as the gas outlet. The distance from the equipment’s centerline to the flange surface is indicated as 1114. What does this 1114 mean? The takeover dimension is φ630X10; it serves as the gas outlet. The extension length of the gas outlet flange is 200. Does this extension length refer to the same distance as that from the equipment’s centerline to the flange surface?
They don’t mean the same thing; the extension length is the distance from the flange sealing surface to the outer wall of the equipment, while the distance from the equipment’s centerline to the flange surface is equal to the extension length plus the radius of the equipment’s outer circle.