New ARCA developments at ACHEMA 2009
OPOS Interface® - the innovative standard interface
The OPOS Interface® is an innovative standard interface for the reliable and efficient connection of an intelligent positioner and a linear or part-turn pneumatic actuator. The benefits provided by the interface are: reduced mounting costs, reduced spare parts inventory, increased reliability and stability as well as the ability to safely replace the positioner during operation by means of integrated interlocking. This also particularly applies to safety-related applications.
As there is no piping between the positioner and the actuator and as the pressure gauges are mounted on the actuator, installation can be performed with minimum ef-fort and at low cost. The standard interface is vendor-independent and offers users maximum flexibility where the selection of products is concerned. The OPOS interface® is innovative, simple, cost-effective, rugged and safe in plant operation.
The determination of SIL rating for a control valve is the combination of “failure probability” of all components combined. The OPOS Interface® improves the SIL rating of the complete valve package by reducing the number of mechanical components and connections between the intelligent positioner and the actuator, increasing the total reliability of the system.
The OPOS Interface® is an innovative standard interface for the reliable and efficient connection of an intelligent positioner and a linear or part-turn pneumatic actuator. The benefits provided by the interface are: reduced mounting costs, reduced spare parts inventory, increased reliability and stability as well as the ability to safely replace the positioner during operation by means of integrated interlocking. This also particularly applies to safety-related applications.
As there is no piping between the positioner and the actuator and as the pressure gauges are mounted on the actuator, installation can be performed with minimum ef-fort and at low cost. The standard interface is vendor-independent and offers users maximum flexibility where the selection of products is concerned. The OPOS interface® is innovative, simple, cost-effective, rugged and safe in plant operation.
The determination of SIL rating for a control valve is the combination of “failure probability” of all components combined. The OPOS Interface® improves the SIL rating of the complete valve package by reducing the number of mechanical components and connections between the intelligent positioner and the actuator, increasing the total reliability of the system.
Enhancement of ECOTROL® Control Valve Range
The upgrade of the high esteemed ECOTROL® Control Valve with a size 24” (DN 600) valve is ARCA’s response to the increasing demand of high capacity globe style control valves, especially as anti-surge valve on turbo-compressors. The standard body material is carbon and stainless steel; the standard trim is a pressure balanced perforated plug with maximum flow coefficient Cv 7020 (KVs 6050). With sophisticated optional low-noise cages this valves is a preference on all applications, where low noise emission must be combined with excellent control behaviour.
Download the text here.
The upgrade of the high esteemed ECOTROL® Control Valve with a size 24” (DN 600) valve is ARCA’s response to the increasing demand of high capacity globe style control valves, especially as anti-surge valve on turbo-compressors. The standard body material is carbon and stainless steel; the standard trim is a pressure balanced perforated plug with maximum flow coefficient Cv 7020 (KVs 6050). With sophisticated optional low-noise cages this valves is a preference on all applications, where low noise emission must be combined with excellent control behaviour.
Download the text here. 
PRDS Valves on Steam Turbines up to 500 MW
The modular design of combined Pressure Reducing and Desuperheating Valves with steam assisted spraynozzle has been further developed to meet the increased operation pressures and temperatures which are generated by the demand for higher efficiency of modern power plants. In sizes up to 16” x 32” (DN 400 x DN 800), with a maximum working pressure 130 bar at 590°C and with 500 t/h maximum steam flow now ARCA is able to provide competent and complete solutions on power and heat recovery plants up to 500 MW.
Download the text here.
The modular design of combined Pressure Reducing and Desuperheating Valves with steam assisted spraynozzle has been further developed to meet the increased operation pressures and temperatures which are generated by the demand for higher efficiency of modern power plants. In sizes up to 16” x 32” (DN 400 x DN 800), with a maximum working pressure 130 bar at 590°C and with 500 t/h maximum steam flow now ARCA is able to provide competent and complete solutions on power and heat recovery plants up to 500 MW.
Download the text here. 
