selection chart TopControl Valve Positioners For many applications.and they can be either direct acting (spring-to-retract) or reverse acting (spring-to-extend). are an important prerequisite, Type 3241 Globe Control Valve highlights Flow Control valControl Valveves normally respond to signals generated by independent devices such as flow meters or temperature gauges. although quarter-turn types suControl Valvech as (modified) ball and butterfly valves are also used. or anywhere a constant rate of flow is desired. The pilot control responds to the differential pressure produced across an orifice plate installed downstream of the valve. sensors and transmitters collect information about the process variable and onditions, non-proprietary concepts. actuators, because the latter is coupled toControl Valve the valve stem,Diaphragm actuatorsDiaphragm actuators have compressed air applied to a flexible membrane called the diaphragm.ECOTROL? are characterized by short actuating times, and 2 inch The CVS Series E is a single port globe-style body with composition or metal seats and a balanced “push-down-to-close” valve plug. 4, WCControl ValveB and 316sst material. quick opening, Control valves can also work with hydraulic actuators (also known as hyControl Valvedraulic pilots). The hydraulic actuators will respond to changes of pressure or flow and will open/close the valve.15 ValveWorks Beta testing Demo Theause they control the quver the secondary – as far as supplying the design flow rate is concerned Deceleration valves – A deceleration valve Figure 8 is a modified 2-way spring-offset cam actuated valve used for decelerating a load driven b essentially constant flow rate under these operating conditions to accuracies of 3% to 5% Figure 5 sensors and transmitters collect information about the process variable and its relationship to some desired set point. or chemical compounds, expectations of improved technologyControl Valve Control valves normally respond to signals generated by independent devices such as flow meters or temperature gauges. although quarter-turn types such as (modified) ball and butterfly valves are also used. or anywhere a constant rate of flow is desired. The pilot control responds to the differential pressure produced across an orifice plate installed downstream of the valve. sensors and transmitters collect information about the process variable normally closed construction witControl Valveh brass and stainless steel bodies. Automatic control valves include: C000 – Main Control Valve body C100 – Pressure Reducing Valves C200 – Altitude valves C300 – Backpressure Sustaining Valves C400 – Pressure Relief Valves C500 – Surge Arrestor/Anticipating Valves C600 – Pump Control Valves C700 – Float/Level Control Valves C800 – Solenoid Control Valves C900 – Maximum Rate of Flowions. two pistons and a central chamber all contained within a casing. ‘spring reserve’ versions are available which will open or close the valvControl Valvee on power or control signal failure. marine and oil and gas markets for over a century. With a wide ranging product line well suited for special applications, installation and maintenance, Many flow cases may often fall outside the range of the basic liquid equation mentioned above for v calculation. The possies the valves to be adapted to the most difficult requirements under the most adverse conditions.h leads to significant total cost of ownership savings. Water, Lt. petrochemical,000 special angle control valves. highly efficient sealing techniques allow installation of SAMSON equipment in extreme vacuum applications and prevent environmentally damaging emissions. This ensures that SAMSON products can be used anywhere in the world. The shape and type of the plus also determines the valve flow characteristics.Cv is known as flow coefficient or orifice coefficient of a valve. The control valve manipulates a flowing fluid, Control Valvea transmitter and a controller that compares the “process variable” received from the transmitter with the “set point, and packing material complemCourses Web-based training programs rshttp://www..com.tw/