LF2 Carbon and Low-alloy Steel, Butt-welded Type Block and Bleed Valve, YJSB Series Single Block Valve, Block: Needle Valve (0.16 in. Orifice), 1/2 in. Butt Welding Branch × NPS 1/2 Class 900 RJ Flange, 1/2 in. Female NPT (with Plug) Vent, PTFE Packing