The Double Block & Bleed Valve (Model YMDBBX) is a high-integrity monoflange valve featuring OS&Y construction and full flange connection flexibility. It is suitable for direct mounting on process pipelines and includes a 360° rotatable adaptor (male or female), an integral gauge siphon, and vent sizes of ¼” NPT, ½” NPT, or G ¼” parallel thread with locking pin. Pressure classes include 150/300/600lb, 900/1500/2500lb, and up to API 10000.