IE28-630T
(6.0" NPT x (2)3.0" NPT - Inline Recessed Brass FDC w. Double Drop Clappers)

Wilson & Cousins, IE28-630T, 6" (152mm) F NPT x 3" (76mm) F NPT x 3" (76mm) F NPT, cast brass, inline, recessed (flush-mount) body fire department connection.  Rated working pressure of 250 psi.  Each 3" (76mm) inlet can supply up to 250 GPM. UL /ULC Listed and FM Approved.