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  2. Vent - Wikipedia

    en.wikipedia.org/wiki/Vent

    Drain-waste-vent system or plumbing drainage venting, pipes leading from fixtures to the outdoors; Duct (flow), used to deliver and remove air; Flue, a duct, pipe, or chimney for conveying exhaust gases from a furnace or water heater; Gas venting, a safe vent in the hydrocarbon and chemical industries; Medical ventilator, mechanical breathing ...

  3. Drain-waste-vent system - Wikipedia

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

    In the U.S., every plumbing fixture must also be coupled to the system's vent piping. [1] Without a vent, negative pressure can slow the flow of water leaving the system, resulting in clogs, or cause siphonage to empty a trap. The high point of the vent system (the top of its "soil stack") must be open to the exterior at atmospheric pressure.

  4. Glossary of HVAC terms - Wikipedia

    en.wikipedia.org/wiki/Glossary_of_HVAC_terms

    An air conditioner and heater combined into a single, electrically powered unit, typically installed through a wall and often found in hotels. Abbreviated PTAC. PAG Polyalkylene glycol is a synthetic oil used in A/C systems to lubricate the compressor. Most all newer model cars use PAG as the lubricant in the A/C system. packaged unit

  5. Plumbing - Wikipedia

    en.wikipedia.org/wiki/Plumbing

    Copper tubing is available in four wall thicknesses: type DWV (thinnest wall; only allowed as drain pipe per UPC), type 'M' (thin; typically only allowed as drain pipe by IPC code), type 'L' (thicker, standard duty for water lines and water service), and type 'K' (thickest, typically used underground between the main and the meter).

  6. Boiler blowdown - Wikipedia

    en.wikipedia.org/wiki/Boiler_blowdown

    Modern boilers discharge bottom blowdown to a blowoff tank where the blowdown can flash and vent steam upwards without entraining water which might cause burns. A pipe near the bottom of the blowoff tank maintains a water level below the blowdown entry point and allows cooler water remaining from earlier blowdown events to drain from the tank ...

  7. Turning vanes (HVAC) - Wikipedia

    en.wikipedia.org/wiki/Turning_vanes_(HVAC)

    This product article is a stub. You can help Wikipedia by expanding it.

  8. AOL Dialer: Fix common problems - AOL Help

    help.aol.com/articles/aol-dialer-fix-common-problems

    The other end of the cord must be plugged securely into the modem jack labeled Line, Telco, or Wall. Note : For best results, the phone cord should go directly to the wall jack. Remove any splitters, phone line surge protectors, fax or answering machines, or other devices as they may affect your modem’s ability to connect.

  9. Vapor–liquid separator - Wikipedia

    en.wikipedia.org/wiki/Vapor–liquid_separator

    The separator is only effective as long as there is a vapor space inside the chamber. The separator can fail if either the mixed inlet is overwhelmed with supply material, or the liquid drain is unable to handle the volume of liquid being collected.