| Answer | Crossword Clue |
|---|---|
| standards | An upright water or gas pipe |
| riser | vertical pipe (as for water or gas) or a vertical portion of an electric wiring system |
| hydrant | upright pipe with an outlet for drawing water from a water main |
| hydrants | An upright water pipe, esp. one in a street, with a nozzle to which a fire hose can be attached |
| stopcocks | An externally operated valve regulating the flow of a liquid or gas through a pipe |
| stopcock | An externally operated valve regulating the flow of a liquid or gas through a pipe |
