Grooved pipe couplings and fittings are used to connect pipes in wet and dry systems. They provide some flexibility in the movement and deflection of the piping system, and the concept of the grooved coupling was invented in 1925 when Victaulic designed the first mechanical coupling. Although many other companies produce mechanical slotted couplings, slotted couplings are still primarily known as Victualic pipe couplings or Victaulic style fittings.
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