SSCSV 1
SSCSV 1 : Subsurface Controlled Subsurface Safety Valve. An SSSV actuated by the pressure characteristics of the well. These devices are usually actuated by differential pressure through the SSCSV (Velocity Type) or by tubing pressure at the SSCSV (High or Low Tubing Pressure Types). (RP 14B, Spec 14A)