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  2. Pressure grouting - Wikipedia

    en.wikipedia.org/wiki/Pressure_grouting

    Pressure grouting or jet grouting [1] involves injecting a grout material into otherwise inaccessible but interconnected pore or void space of which neither the configuration or volume are known, and is often referred to simply as grouting. The grout may be a cementitious, resinous, or solution chemical mixture. Some types of injected grout may ...

  3. Air gap (plumbing) - Wikipedia

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

    Water cannot flow from the sink to the tap in normal circumstances, even if the water supply loses pressure. An air gap , as related to the plumbing trade, is the unobstructed vertical space between the water outlet and the flood level of a fixture . [ 1 ]

  4. Water softening - Wikipedia

    en.wikipedia.org/wiki/Water_softening

    Water softening is the removal of calcium, magnesium, and certain other metal cations in hard water. The resulting soft water requires less soap for the same cleaning effort, as soap is not wasted bonding with calcium ions. Soft water also extends the lifetime of plumbing by reducing or eliminating scale build-up in pipes

  5. Tube (fluid conveyance) - Wikipedia

    en.wikipedia.org/wiki/Tube_(fluid_conveyance)

    A tube and pipe may be specified by standard pipe size designations, e.g., nominal pipe size, or by nominal outside or inside diameter and/or wall thickness. The actual dimensions of pipe are usually not the nominal dimensions: A 1-inch pipe will not actually measure 1 inch in either outside or inside diameter, whereas many types of tubing are ...

  6. Plumbing - Wikipedia

    en.wikipedia.org/wiki/Plumbing

    Tubing, in particular copper, comes in rigid hard tempered joints or soft tempered (annealed) rolls. PeX and CPVC tubing also comes in rigid joints or flexible rolls. The temper of the copper, whether it is a rigid joint or flexible roll, does not affect the sizing. [27] The thicknesses of the water pipe and tube walls can vary.

  7. Tube cleaning - Wikipedia

    en.wikipedia.org/wiki/Tube_cleaning

    A mechanical tube cleaning system is a cleaning body that is moved through the tube in order to remove deposits from the tube wall. In the most simple case it is a matter of a brush that is moved in the tube by means of a rod or a flexible spring (device). In large-scale technology and industrial sector, however, several processes have ...

  8. Grout - Wikipedia

    en.wikipedia.org/wiki/Grout

    Grout sealer is a water-based or solvent-based sealant applied over dried grout that resists water, oil, and acid-based contaminants. Grout cleaner is a basic cleaning solution that is applied on grout lines and removes the dirt and dust. [9] A die grinder is used for faster removal of old grout compared to a standard grout saw.

  9. Grout curtain - Wikipedia

    en.wikipedia.org/wiki/Grout_curtain

    A grout curtain is a barrier that protects the foundation of a dam from seepage and can be made during initial construction or during repair. [1] Additionally, they can be used to strengthen foundations and contain spills.