CV-8000 PRDS
STEAM CONDITIONING
Steam Conditioning Stations
Micro drilled free expanding cage reduces
generated valve noise acting as strain protecting
seat sealing surface from damages.
Free expanding design water distribution allows
to compensate differential thermal expansions
between hot (steam) and cold (water) sections.Lip seal seat design allows to minimize
thermal expansions effects on body
connection.Pressure seal body-bonnet connection
warranting high reliability with
most severe working conditions.Balanced plug with pilot allows a perfect
valve seal in closed position by minimizing
friction forces during regulation.
Drain and heating connections allow to
avoid steam condensate accumulation
and to reduce thermal stresses on valve body
when quick opening is request on high
temperature service
applications.Free expanding design silencer is optimized
to reduce more critical acoustical frequencies
by minimizing downstream transmitted noise.
VeCo-LT silencer is available for most severe
applications or when very low SPL is required.Integrated water injection allows to
dramatically reduce layout complexity
allowing to optimize steam desuperheating
efficiency.Spring energized high rangeability spraying
nozzles placed immediately downstream
valve silencer allow to maximize
desuperheating efficiency.
CV-8000 PRDS
STEAM CONDITIONING
Steam Conditioning Stations
generated valve noise acting as strain protecting
seat sealing surface from damages.
to compensate differential thermal expansions
between hot (steam) and cold (water) sections.
thermal expansions effects on body
connection.
warranting high reliability with
most severe working conditions.
valve seal in closed position by minimizing
friction forces during regulation.
avoid steam condensate accumulation
and to reduce thermal stresses on valve body
when quick opening is request on high
temperature service applications.
to reduce more critical acoustical frequencies
by minimizing downstream transmitted noise.
VeCo-LT silencer is available for most severe
applications or when very low SPL is required.
dramatically reduce layout complexity
allowing to optimize steam desuperheating
efficiency.
nozzles placed immediately downstream
valve silencer allow to maximize
desuperheating efficiency.
Steam Conditioning Systems
Description
PRDS CV-8000 series has been specifically designed for severe steam conditioning services such as steam turbine bypass stations and all applications where perfect seal, frequent start-up from cold or warm conditions and fast opening is required.
Control Valves for Power Generation Applications Catalogue |
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Technical Sheet |
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Main features
AST produces a complete series of Pressure Reducing and Desuperheating Stations for steam conditioning in power generation and industrial applications.
Based on the wide range of CV-8000 control valve series and on the comprehensive range of DS-3000 steam desuperheaters, the DS-8000 PRDS’s can be configurated to comply to practically all steam conditioning applications.
Sizes / Pressure Classes
Size from DN 1” to DN 60”
Rating: up to Class 4500.
Design Codes & Product Standards
IEC 60534, FCI 70-2, EN 12516, EN 1092, ASME B16.34, ASME B16.5, TRD 301.
Available layout configurations:
Straight-way body with cage trim, conventional balanced or pilot balanced plug.
Angle body, bottom inlet with cage trim, conventional balanced plug.
Angle body, side inlet with cage trim, conventional balanced or pilot balanced plug.
Offset body with cage trim, conventional balanced or pilot balanced plug.
