Control valves 800 line
RV 805 a RV 806
The control valves series RV 805 and RV 806 are single-seated valves of a unit construction that provides a great variety of control elements. Thanks to such a combination, it is possible to satisfy the customers´ requirements and demands. The valve is equipped with "LIVE LOADING" packing. The valve connection is weld ends in angle execution (type RV 805) or "Z"-shaped execution (RV 806). Material of weld ends is optional. Their dimensions correspond to ČSN 13 1075 (3/1991). The valve can also be supplied with the connection specified by the customer.
The valve is supplied with an electric actuator of the following producers: ZPA Pečky, Regada, Auma, Schiebel and with a pneumatic actuator of Flowserve company.
The valves series RV 805 and RV 806 are especially designed as control elements for control of injection water supply into steam pipeline. Thanks to their high nominal working pressure (PN 400) and ability to manage high differential pressures (ordinarily 15 MPa, max. 20 MPa), owing to a multi-step pressure reduction, the valves can be used in every application to which any other common valve cannot resist due to its low service life. The max. permissible operating pressures correspond to EN 12 516-1.
The valves are especially designed to control the flow and pressure of cooling water to steam. 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. It is necessary to take into account the used materials when the valves is used for any other process media.