Design description: Outside screw and yoke.Bolted bonnet (pressure seal bonnet for 1500lbs). Flexible wedge, fully guided.Integral seat and back seat. Rising stem and non-rising handwheel. Available with gear operator. Available with actuator. 1. Material: (1) A351-CF8. (2) A351-CF8M. (3) A351-CF3M. 2. Ends: (1) Flanged ends. (2) Butt welding ends. 3. Ratings: (1) ANSI 150, 300, 600, 900 and 1500 LBS. (2) JIS 1OK, 20K, 30K and 40k. (3) PN 16,PN40,PN63,PN100