Wash. Rev. Code § 25.15.038
(1)
(2) The duty of loyalty is limited to the following:
(3)
(6) To the extent that, at law or in equity, a member or manager has duties (including fiduciary duties) to a limited liability company or to another member, manager, or other person bound by a limited liability company agreement, the member's or manager's duties may be modified, expanded, restricted, or eliminated by the provisions of a limited liability company agreement; provided that such provisions are not inconsistent with law and do not eliminate or limit:
[ 2015 c 188 s 11.]