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  2. Pipe hitch - Wikipedia

    en.wikipedia.org/wiki/Pipe_hitch

    The pipe hitch will not slip when tied correctly to a pipe or pole. This knot is a variation of the Round turn and two half-hitches. [4] [5] This knot can be used with a rope to pull a pipe or spar out of the ground, [6] or to hoist a pipe or beam.

  3. Trap (plumbing) - Wikipedia

    en.wikipedia.org/wiki/Trap_(plumbing)

    In plumbing, a trap is a U-shaped portion of pipe designed to trap liquid or gas to prevent unwanted flow; most notably sewer gases from entering buildings while allowing waste materials to pass through. In oil refineries, traps are used to prevent hydrocarbons and other dangerous gases and chemical fumes from escaping through drains.

  4. List of knot terminology - Wikipedia

    en.wikipedia.org/wiki/List_of_knot_terminology

    The reef knot can capsize if one of its standing ends is pulled.. A knot that has capsized or spilled has deformed into a different structure. Although capsizing is sometimes the result of incorrect tying or misuse, it can also be done purposefully in certain cases to strengthen the knot (see the carrick bend [4]) or to untie a seized knot which would otherwise be difficult to release (see ...

  5. List of knots - Wikipedia

    en.wikipedia.org/wiki/List_of_knots

    Pipe hitch – hitch-type knot used to secure pipes/poles; Plafond knot; Poldo tackle – an instant tension-applying and tension-releasing mechanism in rope; Pratt knot – a method of tying a tie around one's neck and collar; Pretzel link knot – in knot theory, a branch of mathematics, a pretzel link is a special kind of link; Prusik knot ...

  6. 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.

  7. Taut-line hitch - Wikipedia

    en.wikipedia.org/wiki/Taut-line_hitch

    The taut-line hitch is an adjustable loop knot for use on lines under tension.It is useful when the length of a line will need to be periodically adjusted in order to maintain tension.

  8. Albright special - Wikipedia

    en.wikipedia.org/wiki/Albright_special

    The Albright special [1] or Albright knot is a bend used in angling. It is a strong knot used to tie two different diameters of line together, for instance to tie monofilament to braid. The Albright is relatively smooth and passes through guides when required. Some anglers coat the knot with a rubber based cement to make it even smoother and ...

  9. Raceway (aquaculture) - Wikipedia

    en.wikipedia.org/wiki/Raceway_(aquaculture)

    Technologies for the removal of solids include microscreens, dual-drain tanks, swirl separators, plate separators, baffles, media filters, air flotation, foam fractionation, chemical flocculation, and constructed wetlands. But because of the impracticality and / or high costs of these methods, most of them are not applicable for commercial ...

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