Equalizing Subs
General-service lock and pressure control devices
Equalize pressure in subsurface controls for safe slickline retrieval.
Slickline-retrievable subsurface safety valves
Some WRDP-2 valves feature chemical injection capabilities or spring spacer adjustablity (SSA). SSA valves enable you to change the closing pressure during assembly by substituting spacers of different lengths instead of changing the power spring.