Image H-Series ISO-B Steel Mill 'Slide Gate' Female Threaded Coupler Markets Steel Refining, Steel Melting, Steel Finishing Jump to Section Product Options Related Products Product Options Part Number Length Maximum OD Body Size Thread Thread Size Pipe Thread Seal Material 4HF4-HV 2.86" (72.6 mm) 1.86" (47.2 mm) 1/2" Female NPTF 1/2"-14 NPT / NPTF Steel F-4HF4-HV 2.86" (72.6 mm) 1.86" (47.2 mm) 1/2" Female NPTF 1/2"-14 FKM Steel Related Products Image H-Series ISO-B Coupler Seal Kit Image H-Series ISO-B Dust Cap/Plug Image H-Series ISO-B High Volume Female Coupler Image H-Series ISO-B High Volume Female Plug Image H-Series ISO-B Repair Kit Image H-Series ISO-B Rigid Dust Plug Image ISO-B Steel Mill 'Slide Gate' Female Threaded Plug Image Series-F Flow Control Valve