The type 19000 valve is ASME and PED certified. It meets and exceeds API seat tightness performance. The 19000 offers enhanced capacity and blowdown performance on many media types. In most cases, it does not require parts changes to accommodate different media. Specifications : • Inlet Sizes: 1/2″ to 2″ • Outlet Sizes: 1″ through 2 1/2″ • Orifice Sizes: .019″ through .567″ • Set Pressure Range: 5 psig to 15000 psig • Temperature Range: -425°F to 1100°F • Certification: ASME Section III and VIII,PED and SQL