NIBCO NL0J246 T113Bhw 1/2 Irr Gate W/Brze Hw The NIBCO® bronze gate valve features a screw-in bonnet for service where infrequent maintenance is required. The female threaded ends allow for ease of installation. Non-rising stem gate valves are used when shutoff is required and a space saving is necessary. The solid wedge, integral seats and bi-directional service make the gate valve a good choice for a broad range of services.