Chemical Engineering :: Processing & Handling :: Liquid, Gas and Air Handling :: Valves http://www.che.com Chemical Engineering en-us 2013 Sat, 25 May 2013 5:21:12 EDT Control Valve Performance The performance of control valves within process control loops has a significant impact on maintaining consistent processes. This one-page refresher outlines some of the important aspects of control-valve performance, including parameters of both static and dynamic response... http://www.che.com/processing_and_handling/liquid_gas_and_air_handling/valves/10469.html Wed, 1 May 2013 0:00:00 EDT Bellows-sealed valves for really hazardous chemicals For 40 years, this company has developed and manufactured bellows-sealed globe valves (photo) for hazardous applications in the chemical, petrochemical and nuclear industries. The... http://www.che.com/processing_and_handling/liquid_gas_and_air_handling/valves/10492.html Wed, 1 May 2013 0:00:00 EDT A power tool for opening and closing valves The EasiDrive portable valve actuator effortlessly opens and closes valves in petroleum refineries, power plants, paper mills and chemical processing plants. Generating a torque of up to 2,000 Nm, this tool enables a... http://www.che.com/processing_and_handling/liquid_gas_and_air_handling/valves/10494.html Wed, 1 May 2013 0:00:00 EDT These actuators are designed for large pressures Promation Engineering Designed for use on rising-stem globe control valves, the PL Series actuators (photo) provide up to 4,400 lb of force and up to 3.9 in. of travel. This increased up-and-down force, the company says... http://www.che.com/processing_and_handling/liquid_gas_and_air_handling/valves/10385.html Mon, 1 Apr 2013 0:00:00 EDT The Direct Integration Method: A Best Practice for Relief Valve Sizing There are several methods available to size relief valves. This article describes the inherent advantages of one of them.... http://www.che.com/processing_and_handling/liquid_gas_and_air_handling/valves/10394.html Mon, 1 Apr 2013 0:00:00 EDT Valve position indicators that tell more than just on or off   The 2040 digital position indicator uses a colored light signal, visible from a distance, to show the open or closed position of a valve. Four different color signals are used: open and closed by... http://www.che.com/processing_and_handling/liquid_gas_and_air_handling/valves/10266.html Fri, 1 Mar 2013 0:00:00 EST Direct-acting solenoid valves for use in harsh environments Introduced last month, these two intrinsically safe solenoid valves (photo) have Ex ia IIC T6 certification. The solenoid operators are designed for use on the 327 range of direct-operated solenoid... http://www.che.com/processing_and_handling/liquid_gas_and_air_handling/valves/10273.html Fri, 1 Mar 2013 0:00:00 EST Configure this valve position monitor with the push of a button The Type 3738 electonic valve-position monitor can be used with on/off valves across a wide range of applications, and enables valve-position monitors to be configured at the push... http://www.che.com/processing_and_handling/liquid_gas_and_air_handling/valves/10290.html Fri, 1 Mar 2013 0:00:00 EST This little valve has a zirconia ball and seat The new Hard Seat VHS Micro-Dispense Valve offers repeatable, non-contact dispensing of fluids in the nano- to microliter range. It features a... http://www.che.com/processing_and_handling/liquid_gas_and_air_handling/valves/10143.html Fri, 1 Feb 2013 0:00:00 EST Control valves operate four times faster with this volume booster   With the newly developed, high-precision 4090 pneumatic volume booster it is possible to amplify the air strength of the set point signal from the positioner to the actuator such that these control valves (depending on the nominal valve... http://www.che.com/processing_and_handling/liquid_gas_and_air_handling/valves/10167.html Fri, 1 Feb 2013 0:00:00 EST