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  2. Drain-waste-vent system - Wikipedia

    en.wikipedia.org/wiki/Drain-waste-vent_system

    A sewer pipe is normally at neutral air pressure compared to the surrounding atmosphere.When a column of waste water flows through a pipe, it compresses air ahead of it in the system, creating a positive pressure that must be released so it does not push back on the waste stream and downstream traps, slow drainage, and induce potential clogs.

  3. Trench drain - Wikipedia

    en.wikipedia.org/wiki/Trench_drain

    A trench drain (also known as a channel drain, line drain, slot drain, linear drain, or strip drain) is a specific type of floor drain featuring a trough- or channel-shaped body. It is designed for the rapid evacuation of surface water or for the containment of utility lines or chemical spills.

  4. Vehicle glass - Wikipedia

    en.wikipedia.org/wiki/Vehicle_glass

    It includes windscreens, side and rear windows, and glass panel roofs. Vehicle glass is generally held in place by glass run channels, which also serve to contain fragments of glass if the glass breaks. Back glass is also called rear window glass, rear windshield, back shield, or rear glass. It is the piece of glass opposite the windshield.

  5. Heating, ventilation, and air conditioning - Wikipedia

    en.wikipedia.org/wiki/Heating,_ventilation,_and...

    All modern air conditioning systems, even small window package units, are equipped with internal air filters. [citation needed] These are generally of a lightweight gauze-like material, and must be replaced or washed as conditions warrant. For example, a building in a high dust environment, or a home with furry pets, will need to have the ...

  6. Air lock - Wikipedia

    en.wikipedia.org/wiki/Air_lock

    'S' trap inlet to drain [further explanation needed]. The air lock phenomenon can be used in a number of useful ways. An 'S' trap (a pipe that descends from a reservoir, then curves back up, then down again) allows liquid to flow from top to bottom unhindered, and gas cannot flow through the trap unless it has enough extra pressure to overcome the liquid head of the trap.

  7. Mary Anderson (inventor) - Wikipedia

    en.wikipedia.org/wiki/Mary_Anderson_(inventor)

    The trolley car’s front window was designed for bad-weather visibility, but its multi-pane windshield system worked very poorly. Therefore, to clear the sights, the driver needed to open the window, lean out of the vehicle, or stop the car to go outside in order to wipe the windscreen with his or her hands.

  8. Glass run channel - Wikipedia

    en.wikipedia.org/wiki/Glass_run_channel

    A car with the locations of the glass run channels highlighted in red A 250 mm glass run channel cleaner. A glass run channel is a groove, normally made of rubber or plastic, that is found around windows (most commonly car windows). [1] [2] [3] The primary purpose of a glass run channel is to provide a seal for the window.

  9. Water metering - Wikipedia

    en.wikipedia.org/wiki/Water_metering

    There are several types of registers on water meters. A standard register normally has a dial similar to a clock, with gradations around the perimeter to indicate the measuring unit and the amount of water used, if less than the lowest digit in a display similar to the odometer wheels in a car, their sum is the total volume used.