Connector,
Connector, also referred to as a gooseneck or pigtail, means a short segment of piping not exceeding three feet that can be bent and is used for connections between service piping, typically connecting the service line to the main. For purposes of subpart I of this part, lead connectors are not considered to be part of the service line.
Source
40 CFR § 141.2
Scoping language
As used in this part, the term: