• 15 parts
  • Checked September 2026

Parts of a Water Fountain

A wall-hung drinking fountain from the front, then with the front of its cabinet off.

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Each numbered ring is a button. Use the arrow keys to move between them and Enter to choose. Names are read out in Study, and once a part is answered.

All 15 parts on the diagram

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Start here: 7 parts you can see 7

  1. Bubbler The spout that sends the water up in an arc.
  2. Basin The shallow bowl that catches the water.
  3. Push bar A wide bar on the front; pressing it starts the water.
  4. Stream The arc of water from the bubbler into the basin.
  5. Drain The opening in the basin where unused water runs out.
  6. Cabinet The housing under the basin that holds the cooling system.
  7. Bottle filler A second outlet above the basin for filling bottles.

Inside the cabinet 8

  1. Filter A cartridge that removes impurities from the water.
  2. Evaporator The cold part of the cooling system, where the water is chilled.
  3. Regulator Holds the water pressure steady, which sets the height of the stream.
  4. Waste line The pipe that carries water from the drain down to the trap.
  5. Trap The bend in the waste pipe just before it enters the wall.
  6. Compressor The sealed pump that drives the cooling system.
  7. Condenser A grid of tubing where the cooling system gives off its heat.
  8. Fan Moves air over the condenser to carry the heat away.

How this list was compiled: Read 2026-09-30; a name is kept only where two independent sources use it. (1) A drinking fountain maker's troubleshooting guide and two installation manuals with parts lists for its wall-hung coolers, https://archive.org/details/manualzilla-id-6382409 , https://archive.org/details/manualzilla-id-6323558 , https://archive.org/details/manualzilla-id-6202054 (one maker, one source): bubbler, stream (its height is set at the regulator and it should land in the basin), basin, push bar, drain fitting, strainer, regulator, cold control, compressor, condenser, fan motor and blade, evaporator assembly, filter, cooler cabinet, bottle filler, waste line and trap. (2) A second maker's electric water cooler product page, https://www.hawsco.com/hydration/electric-water-cooler/ : bubbler valve, push bar, basin, bottle filler, filter. (3) US Navy, Utilitiesman 3 & 2 (1973), https://archive.org/details/ERIC_ED097442 : most drinking fountains are installed with a P-trap underneath the waste; the electrically cooled fountain; water coolers have the condensing unit in the lowest part of the cabinet. (4) National Bureau of Standards Report 2134 (1952), https://archive.org/details/model320cqelectr2134karg : cabinet, compressor, air-cooled condenser and its fan, evaporator section, thermostat. (5) A third maker's water cooler installation and maintenance sheet, https://archive.org/details/manualzilla-id-5912614 : compressor, condenser, strainer, pressure regulator, filter, thermostat. (6) Wikipedia, Drinking fountain and Water dispenser: a drinking fountain is also called a water fountain or bubbler; a basin; the drinker drinks from the stream; filters and chillers; a drain line; compressor and condenser; bottle filler combination units. Licence: own work

The drawing: Drawn for this site on 2026-09-30 from plain geometry; nothing traced. Not to scale. Licence: own work

How it works

This is the kind of water fountain fixed to the wall in schools and offices: an electric water cooler with a bottle filler. The names are the ones makers print in their parts lists.

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What you see and touch

Press the push bar and a stream of water arcs out of the bubbler. What you do not drink lands in the basin and runs out through the drain. The bottle filler above fills a bottle instead. Everything else is hidden in the cabinet under the basin.

Inside the cabinet

Water from the building passes through the filter, then the evaporator, which chills it. The regulator keeps the stream at one height. The compressor, the condenser and its fan are the cooling system, as in a refrigerator. Water from the drain falls down the waste line and through the trap.

  • In parts of Wisconsin and New England, people call the whole fountain a bubbler.

Questions and answers

What are the parts of a water fountain called?

Outside: the bubbler, the basin with its drain, the push bar and the cabinet, often with a bottle filler above. Inside the cabinet: a filter, a regulator, the waste line and trap, and a cooling system made of compressor, condenser, fan and evaporator.

What is the spout on a water fountain called?

A bubbler. It is the small outlet at the edge of the basin that sends the water up in an arc. On many fountains a small guard sits over it so that mouths do not touch the opening.

How does a water fountain make the water cold?

The same way a refrigerator does. A compressor pumps refrigerant round a sealed loop. The evaporator takes heat out of the drinking water, and the condenser, with a fan blowing over it, gives that heat off to the room.

Where does the water go after it hits the basin?

Down the drain in the basin, into the waste line and through a trap, a bend in the pipe, before it enters the building's drain in the wall. None of it goes back to the bubbler.