Description
The valves with extended outlet series RV 502 are single-seated control valves of a unit construction designed to fit in all demands of an appliance the valve is designed for. The pressure-balanced, multi-step throttling system is always designed to eliminate the valve´s high differential pressures with a high resistance to wearing caused by flow and effects of expanding steam. It also ensures a low noisiness level. The valve can be delivered with weld ends or flanges having faces acc. to the customer´s requirements and demands.
The valves are actuated with linear actuators. The connection is designed for using both domestic and foreign actuators of the following producers: ZPA Pečky, Regada, Auma, Schiebel and Foxboro.
Application
The sphere of application of these valves continues in the sphere for the valves series RV 210 to RV 235. They are especially designed for industry applications such as heating plants, power plants or regulation of technological processes. The max. permissible operating pressure values correspond to EN 12 516-1.
Process media
The valves are especially designed to control the flow and pressure of vapours and gases without impurities. The producer recommends to pipe a strainer into pipeline in front of the valve when impurities are present. Impurities can affect the quality and reliability of regulation and can cause a reduction of the valve service life.The common process media are for example saturated or superheated steam and other media with no special demands on the used type of material of the valve. The valve application for any other media must be consulted with the producer because of the type of material that is in contact with the process medium.
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The calculating and design programme serves to determine the flow rate of the valve (Kvs, Cvs), check the parameters of the designed valve, select optimum DN and possibly select a suitable valve from LDM production. 
