API SPEC 14A pdf download

API SPEC 14A pdf download.Petroleum and natural gas industries — Downhole equipment — Subsurface safety valve equipment 1 Scope This International Standard provides the minimum acceptable requirements for subsurface safety valves (SSSVs). It covers subsurface safety valves including all components that establish tolerances and/or clearances which may affect performance or interchangeability of the SSSVs. It includes repair operations and the...