Patent ID: 8459370

Claim:
A sprinkler assembly comprising: a monolithic sprinkler body having opposite first and second ends and a threaded section adjacent said first end, said threaded section including a straight thread; a thermally responsive element mounted to said sprinkler body; an adapter having opposite third and fourth ends and an internal passageway extending therebetween, said third end configured to attach to an access member of a piping system in fluid communication with said passageway, said passageway having a threaded section adjacent said fourth end, and said threaded section including a straight thread, said passageway includes an annular recess section having an outer wall with an inner diameter that is larger than an inner diameter of said threaded section of said adapter and a shoulder is disposed at an upstream end of said annular recess section; and a resilient seal member disposed in said annular recess section against said shoulder of said passageway of said adapter, wherein said seal member is annular and includes a central opening aligned with said passageway, wherein said first end of said sprinkler body engages with and compresses said seal member against said shoulder when said threaded section of said sprinkler body is engaged with said threaded section of said passageway and forms a fluid-tight seal between said adapter and said sprinkler body.