Reverse Differential Pressure

Condition during which differential pressure is applied to a choke valve in a direction opposite to the specified operating direction. NOTE This can be in the operating or closed-choke position.

Source: API SPEC 17D, Design and Operation of Subsea Production Systems—Subsea Wellhead and Tree Equipment, Upstream Segment, Second Edition May 2011 (Errata September 2011). Global Standards

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