CV-8000 PRDS

STEAM CONDITIONING

Steam Conditioning Stations

AST Pilot Operated Safety Valves SVP 7200
Micro drilled free expanding cage reduces
generated valve noise acting as strain protecting
seat sealing surface from damages.
AST Pilot Operated Safety Valves SVP 7200
Free expanding design water distribution allows
to compensate differential thermal expansions
between hot (steam) and cold (water) sections.
AST Pilot Operated Safety Valves SVP 7200
Lip seal seat design allows to minimize
thermal expansions effects on body
connection.
AST Pilot Operated Safety Valves SVP 7200
Pressure seal body-bonnet connection
warranting high reliability with
most severe working conditions.
AST Pilot Operated Safety Valves SVP 7200
Balanced plug with pilot allows a perfect
valve seal in closed position by minimizing
friction forces during regulation.
AST Pilot Operated Safety Valves SVP 7200
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.
AST Pilot Operated Safety Valves SVP 7200
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.
AST Pilot Operated Safety Valves SVP 7200
Integrated water injection allows to
dramatically reduce layout complexity
allowing to optimize steam desuperheating
efficiency.
AST Pilot Operated Safety Valves SVP 7200
Spring energized high rangeability spraying
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

Control Valves for Power Generation Applications Catalogue

 

 


Technical Sheet

CV_8000_PRDS Technical Sheet

 

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.