The War of the Rebellion: A Compilation of the Official Records of the Union and Confederate Navies. 30 vols. Washington, DC: Government Printing Office, 1874-1922. Reprint, Gettysburg, PA: National Historical Society, 1971.
I like to hang 0.9% NS to gravity when possible because I always thought that the fluids would stop infusing if the IV site blows. A co-worker of mine disagrees and said that IV fluids hung to gravity would continue to flow and infiltrate if an IV site blows.
Although fluid couplings use hydraulic fluid within their construction, the mechanism loses a portion of its force to friction and results in the creation of heat. No fluid coupling can run at 100 percent efficiency.