Inlet Sizes : 4″ through 36″
Ratings : ANSI Class 150 to 2500
Materials : Carbon steel, Stainless steel
Actuators : Model 37/38 spring-opposed diaphragm; model 87/88 multi-spring-opposed diaphragm; cylinder
Trim : :Dingle or double stage Lo-dB and V-LOG energy management trim; low noise flow-to-open designs or anti-cavitation flow-to-close;
Inherent Characteristics : Linear or Equal percentage
Description : : single or double stage Lo-dB and V-LOG energy management trim; low noise flow-to-open designs or anti-cavitation flow-to-close.
Source : http://www.geoilandgas.com/distributed-gas/production/severe-service-valves