An apparatus comprising: a first component (120; 400) attachable to a first fluid line (108; 300) and a first side (116; 206) of a structure; a second component (122; 401) attachable to a second fluid line (110; 302) and a second side (118; 208) of the structure; and an isolator (124; 402) being configured to be located between the first component (120; 400) and the second component (122; 401) within an opening in the structure, wherein the first component (120; 400), the second component (122; 401), and the isolator (124; 402) form a channel that connects a first channel through the first fluid line (108; 300) to a second channel in the second fluid line (110; 302); wherein the isolator (124; 402) is configured to extend through the structure from the first side (116; 206) of the structure to the second side (118; 208) of the structure and to electrically separate the first fluid line (108; 300) and the second fluid line (110; 302), wherein the first component (120; 400) comprises a first attachment object (132; 403) that is configured to attach to the first fluid line (108; 300) and the first side (116; 206) of the structure and the second component (122; 401) comprises a second attachment object (142; 411) that is configured to attach to the second fluid line (110; 302) and the second side (118; 208) of the structure; wherein a first axial end of the isolator is received in an opening in the first attachment object and a second axial end of the isolator is received in an opening in the second attachment object; wherein the first attachment object (132; 403) has first flanges (420; 424) with first openings (421; 425) and wherein the second attachment object (142; 411) has second flanges (422; 426) with second openings (423; 427), and wherein the first openings (421; 425) of the first flanges (420, 424) are not aligned with the second openings (423; 427) of the second flanges (422; 426). a first component (120; 400) attachable to a first fluid line (108; 300) and a first side (116; 206) of a structure; a second component (122; 401) attachable to a second fluid line (110; 302) and a second side (118; 208) of the structure; and an isolator (124; 402) being configured to be located between the first component (120; 400) and the second component (122; 401) within an opening in the structure, wherein the first component (120; 400), the second component (122; 401), and the isolator (124; 402) form a channel that connects a first channel through the first fluid line (108; 300) to a second channel in the second fluid line (110; 302); wherein the isolator (124; 402) is configured to extend through the structure from the first side (116; 206) of the structure to the second side (118; 208) of the structure and to electrically separate the first fluid line (108; 300) and the second fluid line (110; 302), wherein the first component (120; 400) comprises a first attachment object (132; 403) that is configured to attach to the first fluid line (108; 300) and the first side (116; 206) of the structure and the second component (122; 401) comprises a second attachment object (142; 411) that is configured to attach to the second fluid line (110; 302) and wherein the first component (120; 400), the second component (122; 401), and the isolator (124; 402) form a channel that connects a first channel through the first fluid line (108; 300) to a second channel in the second fluid line (110; 302); wherein the isolator (124; 402) is configured to extend through the structure from the first side (116; 206) of the structure to the second side (118; 208) of the structure and to electrically separate the first fluid line (108; 300) and the second fluid line (110; 302), wherein the first component (120; 400) comprises a first attachment object (132; 403) that is configured to attach to the first fluid line (108; 300) and the first side (116; 206) of the structure and the second component (122; 401) comprises a second attachment object (142; 411) that is configured to attach to the second fluid line (110; 302) and the second side (118; 208) of the structure; wherein a first axial end of the isolator is received in an opening in the first attachment object and a second axial end of the isolator is received in an opening in the second attachment object; wherein the first attachment object (132; 403) has first flanges (420; 424) with first openings (421; 425) and wherein the second attachment object (142; 411) has second flanges (422; 426) with second openings (423; 427), and wherein the first openings (421; 425) of the first flanges (420, 424) are not aligned with the second openings (423; 427) of the second flanges (422; 426). wherein a first axial end of the isolator is received in an opening in the first attachment object and a second axial end of the isolator is received in an opening in the second attachment object; wherein the first attachment object (132; 403) has first flanges (420; 424) with first openings (421; 425) and wherein the second attachment object (142; 411) has second flanges (422; 426) with second openings (423; 427), and wherein the first openings (421; 425) of the first flanges (420, 424) are not aligned with the second openings (423; 427) of the second flanges (422; 426).