Sprinkler Pipe Fittings and Couplings: Types and Uses
2020-3-24u2002·u2002Couplings—both flexible and rigid—hold sprinkler pipes together even under dire circumstances. Almost every time a grooved pipe changes direction and/or elevation—and even, occasionally, when it doesn't—you'll find grooved couplings. These sprinkler pipe fittings generally connect two pipes or fittings of the same diameter: 4-inch ...
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