Inlet Sizes : 1” x 1” through 10” x 12” (25 x 25 mm through 250 x 300 mm)
Ratings : ANSI Class 150 to 2500
Materials : Carbon steel, Stainless steel
Actuators : model 87/88 multi-spring-opposed diaphragm; cylinder
Trim : Fluted single and multi-stage; continuous guided plug; ceramic and tungsten carbide optional; venturi trim to protect valve body.
Inherent Characteristics : Linear
Description : The 73000 Series control valve can throttle highly erosive, flashing, and two-phase flows.
Source : http://www.geoilandgas.com/distributed-gas/production/severe-service-valves