Crosby ANDERSON GREENWOOD SERIES 80 PRESSURE RELIEF VALVE

Types 81, 83 and 86 soft seat design for premium seat tightness provides repeatable leak-tight performance before and after each relief cycle. Full lift design with external adjustable blowdown and replaceable soft seats and seals. Allows higher operating pressure. Gas, vapor and steam service. TECHNICAL DATA Sizes: ½" x ¾" to 2" x 3" Orifices: 0.049 to 1.287 in2 [0.316 to 8.303 cm2] Connections: NPT, Flanged Temperature Range:-423 to +550°F [-253 to +288°C] Set Pressures: 20