Breeching Inlet, 6” x 4-way Male Instantaneous Coupling with NRV TO BS336, Flanged Outlet with 1” Brass Gate Valve, Body: Cast Iron (DUCTILE IRON) TO BS2789, MFG TO BS5041-3-1975 Standard, PN10 Pressure Rated, BSI Kitemark Approved. Breeching inlets are suitable for installation on dry risers, in a building for fire fighting purposes. Fitted with inlet connection at fire brigade access level and outlet connection at specified points, which is normally dry but capable of being charged with water by pumping from fire service appliances.