IE33D
(4.0" NPT x (2)2.5" Hose Swivel - Inline Exposed Brass FDC w. Double Drop Clappers)

Wilson & Cousins, IE33D, 4" (100mm) NPT x 2.5" (65mm) hose thread x 2.5" (65mm) hose thread, cast brass, exposed inline body fire department connection with double clappers. Each 2.5" (65mm) inlet can supply up to 250 GPM. Rated working pressure of 175 psi.  UL /ULC Listed and FM Approved.