This standard shall become effective on the date printed on the cover but may be used voluntarily from the date of publication. Upon the effective date, the requirements of this standard for lock mandrels and landing nipples supersede those given in API Specification 14A, Specification for Subsurface Safety Valve Equipment, Tenth Edition. Annexes A and B of this International Standard are for information only.
This edition of API Specification 14L is an identical adoption of ISO 16070.