Aqua-Lung Foamite acid adjutage air cylinder aquascope automatic sprinkler bathyscaphe bathysphere benthoscope carbon tet carbon tetrachloride carbon-dioxide foam catheter deck gun deluge set diving bell diving boat diving chamber diving goggles diving helmet diving hood diving mask diving suit drainpipe efflux tube extinguisher fire apparatus fire engine fire hose fire hydrant fireplug flue pipe foam foam extinguisher funnel garden hose gas pipe hook-and-ladder hose hosepipe ladder pipe nipple organ pipe periscope pipe pipeline pipette piping pumper reed reed pipe scuba siamese siamese connection siphon soda soil pipe sprinkler sprinkler head sprinkler system standpipe steam pipe stem straw submarine super-pumper swim fins tap tube tubing tubulation tubule tubulet tubulure waste pipe water water cannon water pipe wet blanket wet suit