Direct coupling compatible sprinkler

In combination, a sprinkler and a coupling in a pre-assembled state for joining said sprinkler to a pipe element, said coupling comprising:

• first and second segments arranged end to end surrounding a central space, each of said segments having a first end and a second end;
• an adjustable attachment assembly connecting said segments to one another at a separation sufficient to permit insertion of said pipe element into said central space while said sprinkler is retained to said coupling;
• first and second arcuate surfaces positioned on opposite sides of said segments and projecting toward an axis extending through said central space;
• an annular seal located within said central space, said annular seal comprising first and second lobes positioned on opposite sides of said seal and extending toward said axis;
• said sprinkler comprising:
• a body located at least partially within said central space, said body comprising a bore surrounding said axis, said bore having an inlet and an outlet oppositely disposed;
• a groove extending around said body and positioned between said inlet and said outlet, at least a portion of said first arcuate surfaces on one side of said segments engaging said groove and retaining said sprinkler to said coupling in said pre-assembled state.