Subsurface-controlled Subsurface Safety Valve SSCSV

SSSV actuated by the characteristics of the well itself

Note 1 to entry: Note 1 to entry: These devices are usually actuated by the differential pressure through the

SSCSV (velocity type) or by tubing pressure at the SSCSV (high or low pressure type).

[SOURCE: ISO 14723]

Source: ISO/TR 12489:2013(E) Reliability modelling and calculation of safety systems. Global Standards

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