Direct coupling compatible sprinkler

A sprinkler adapted to receive arcuate surfaces of a grooved coupling, said sprinkler being retainable to said coupling in a pre-assembled state for joining said sprinkler in facing axial end-to-end relation directly to a grooved pipe, said sprinkler comprising:

• a monolithic body defining a bore having an inlet and an outlet oppositely disposed, said bore being open at said inlet, and said inlet being separated from said grooved pipe by a gap therebetween to ensure said sprinkler and said pipe are joined by said coupling spaced apart in facing end-to-end relation;
• a first arm extending from said body adjacent to said outlet, said first arm having an end positioned in spaced relation to said outlet;
• a groove extending around said body, said groove being positioned in said body between said inlet and said outlet, said groove being adapted to receive said arcuate surfaces;
• a single closing member located distal of said groove and sealingly engaging said outlet;
• and
• a trigger positioned between said end of said first arm and said closing member, said trigger permitting opening of said closing member.