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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. Defogger - Wikipedia

    en.wikipedia.org/wiki/Defogger

    This air is in many cases first cooled down and dehumidified by passing it through the vehicle's operating air conditioning evaporator. Such dehumidification, when followed by a reheating, makes the defogging more effective and faster, for the dry warm air has a greater capacity of absorbing water from the glass at which it is directed (with ...

  4. 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 ...

  5. Rain gutter - Wikipedia

    en.wikipedia.org/wiki/Rain_gutter

    They can drain internally or to an eaves gutter, which has a minimum 1 in 360 fall towards the downpipe. [ 11 ] The pitch of a pitched roof is determined by the construction material of the covering. For slate this will be at 25%, for machine made tiles it will be 35%.

  6. Trench drain - Wikipedia

    en.wikipedia.org/wiki/Trench_drain

    The drain is characterized by its long length and narrow width, the cross-section of the drain is a function of the maximum flow volume anticipated from the surrounding surface. Channels can range from 1 inch (2.5 cm) to 2 feet (61 cm) in width, while depths can reach up to 4 feet (120 cm).

  7. Crankcase ventilation system - Wikipedia

    en.wikipedia.org/wiki/Crankcase_ventilation_system

    The draught tube could become clogged with snow or ice, in which case crankcase pressure would build and cause oil leaks and gasket failure. [2] On slow-moving delivery vehicles and boats, there was often no suitable air slipstream for the road draught tube.

  8. Vehicle glass - Wikipedia

    en.wikipedia.org/wiki/Vehicle_glass

    Back glass is also called rear window glass, rear windshield, back shield, or rear glass. It is the piece of glass opposite the windshield. Back glass is made from tempered glass , also known as safety glass , and when broken shatters into small, round pieces. [ 1 ]

  9. Central vacuum cleaner - Wikipedia

    en.wikipedia.org/wiki/Central_vacuum_cleaner

    These and other installation details are described in installation manuals available from manufacturers. [17] Two different diameters of thin-wall (typically 20 gauge or "Schedule 20") plastic piping have traditionally been used in the US. [5]