TECHNICAL BULLETINValtek FlowTop Control ValveFCD VLENTB0060 – 11/09 (Replaces FCD-VLATB060)Valtek FlowTop Control Valves FCD VLENTB0060-01 11/092Body AssemblyFigure 1: FlowTop Control Valve Body AssemblyThe FlowTop control valve is a high-performance, general service valve coupled with the high thrust FlowAct pneumatic diaphragm actuator. The Logix 500 positioner is mounted standard on FlowTop control valves. The Logix 500 simplifies and reduces calibration time to 20 seconds or less by pushing two buttons. The easily installed HART compatible positioner make the FlowTop/Logix 500 combination the best choice for general service valve applications. There is no need for additional software or software support and upgrades. Handheld devices are not needed to calibrate this valve, making it the highest performing, low cost solution for general service valves.The Pop-belly shaped gallery give the FlowTop more C than all the other globe valves on the market.Designed for use in ANSI Class 150 or 300 service applications, the FlowTop control valve is capable of operating within temperatures ranging from -500 to 8000 F (-460 to 4270 C).The FlowTop control valve is available in sizes 0.5 to 4 inches with a carbon steel or stainless steel body. It features flow under, single seated trim with a post-guided valve stem to eliminate cage guiding problems.Heavy duty parts constructed of corrosion resistant materials provide extended valve life.Zero external leakage at the body to bonnet joint: Graphite gasket eliminates leakage and minimizes torque requirements. Multiple equally spaced body bolts ensure optimal gasket loadingStable plug travel over entire stroke of the valve: Solid, sturdy post style guide minimizes vibration ...
