351 series pneumatic (with 812 actuator) upper special angle discharge valve
100 Series Multistage Spool Buck Regulator for Special and Severe Service Conditions
300 series multi-stage spool-type buck angle control valve for special and severe conditions
100 Series Multistage Sleeve Buck Regulator for Special and Severe Service Conditions
300 series multi-stage telescopic buck angle control valve for special and severe conditions