RS 902

Description

Steam conditioning stations of series RS 902 are single-seated control valves of a unit construction designed for water injection into the extended outlet. The pressure-balanced, multi-step throttling trim is designed to eliminate high differential pressures within the valve and ensure the low noisiness. It ensure a high resistance to wearing caused by medium flow and to effects of the expanding steam. A low noisiness level can be also eliminated with orifice plates in extended outlet. Cooling water is injected into the extended outlet behind the throtling trim through a specially designed nozzle (VH, VHP or CHR) with changeable flow. The valve is equipped with packing of type "LiveLoading".

The valves are supplied in angle execution with weld ends connection.

The valves are actuated with both electric and pneumatic actuators. The connection is designed for using actuators of the following producers: ZPA Pečky, Regada Prešov, Auma, Schiebel and Flowserve. It is also possible to use fast acting electrohydraulic actuators for quick closing or opening.

Application

The valves of series RS 902 are designed for simultaneous pressure and temperature reduction of steam. They are especially designed for industrial applications such as low-pressure steam production in heating, steam circuit in power plants, by-pass stations or technological processes.

Process media

The valves are especially designed for the flow and pressure control of the process medium without impurities, however they can be used for gases and vapours when inlet and outlet flow velocities are kept within the permissible range. The common process media are for example water, steam and other media with no special demands on the used type of material of the valve. 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 valve application for any other media should be consulted with the producer because of the type of material that is in contact with the process medium.

Catalogue sheets

02-01.2  Control valves and steam-conditioning station in angle way execution 900 line            CZ, GB