Voltech tejas valves provide various types of valves and Automatic control valves shall be constructed of a carbon steel body, stainless steel V-notch ball and shaft, low friction bearings and a low friction graphite ball seat. Valve sizes 1, 1.5 & 2 inches shall be ANSI Class 150/300 multi-rated and have Universal End Connections for use with NPT or ANSI Class 150/300 wafer connections. Valve sizes 3, 4, 6 inches shall have ANSI Class 150 or 300 flanges as required by application. Control valves shall be rated ANSI Class VI leakage rate, -20°F to 400°F temperature range and minimum 250 PSI allowable shutoff pressure drop at -20° to 100°F.Valves are for use with water, steam and percentage glycol water mixes. Valves have 90degree rotation, 300:1 range ability with equal percentage control characteristic. Standard actuators as well as industry standard pneumatic actuators are acceptable and also we provide consulting services in this Field