[Code of Federal Regulations] [Title 46, Volume 7] [Revised as of October 1, 2003] From the U.S. Government Printing Office via GPO Access [CITE: 46CFR196.37-10] [Page 406] TITLE 46--SHIPPING CHAPTER I--COAST GUARD, DEPARTMENT OF HOMELAND SECURITY (CONTINUED) PART 196--OPERATIONS--Table of Contents Subpart 196.37--Markings for Fire and Emergency Equipment, etc. Sec. 196.37-10 Fire extinguishing system branch lines. (a) The branch line valves of all fire extinguishing systems shall be plainly and permanently marked indicating the spaces served.