Quick Change Control Valves CV-8450 & CV-8750

 

Quick Change Control Valves CV-8450 & CV-8750

 

Balanced plug available in the whole range of temperatures and ratings

Internal thermal differential compensation system allowing to extend working temperature up to 566 °C

Wide range of trim configurations: cage conventional, low noise, multi-step anti-cavitation, velocity control multi-path, multi-stage for severe service applications

Tightness up to class VI under 200 °C and up to class V in the whole range of temperature (up to 566 °C)

Quick change trim with seat locked by bonnet trough cage

BW and flanged connections according to ASME, EN standards, special flanged connections available

CV-8450 & CV-8750

Multi cage anti cavitation trim

AC-DC / AC-TC

Double Cage Anti Cavitation (CV-8452 & CV-8752), high recovery trim is available for high pressure drop or when anti-cavitation trim is required

Triple Cage Anti Cavitation (CV-8453 & CV-8753), high recovery trim is available for high pressure drop or when anti-cavitation trim is required

CV-8450 & CV-8750

Velocity Controlled Labyrinth Trim

AST VeCo-LT

for severe service applications

Velocity Controlled Labyrinth Trim, is a multi-path, multi-stage labyrint trim specially designed for anti-cavitation, low noise and anti-erosion service.

CV-8455 & CV-8755

Variable recovery factor Labirint Trim

AST Vary-VeCo

Variable recovery factor Labirint Trim, combines VeCo-LT and conventional cage to avoid cavitation at low opening minimizing pressure drop at full opening.

CV-8456 & CV-8756

for severe service applications

Plug Balancing available solutions

PTFE carbon-graphite loaded lip seal

up to class VI
T max 315 °C

CV-8450 & CV-8750

Plug Balancing available solutions

Metal C-Ring


up to class V
No temperature limitations

CV-8450 & CV-8750

Plug Balancing available solutions

Carbon-graphite rings


up to class IVS1
No temperature limitations

CV-8450 & CV-8750

Plug Balancing available solutions

Balanced trim with pilot plug


class V and over
No temperature limitations

CV-8454 & CV-8754

CV-8450 & CV-8750

Multi cage anti cavitation trim

AC-DC / AC-TC

Double or Triple Cage Anti Cavitation, high recovery trim is available for high pressure drop or when anti-cavitation trim is required

Multipath – Multistage labyrinth trim

AST VeCo-LT

Velocity Controlled Labyrinth Trim, is a multi-path, multi-stage labyrint trim specially designed for anti-cavitation, low noise and anti-erosion service.

CV-8450 & CV-8750

Multipath – Multistage labyrinth trim

AST Vary-VeCo

Variable recovery factor trim, combines VeCo-LT and conventional cage to avoid cavitation at low opening minimizing pressure drop at full opening.

CV-8450 & CV-8750

Plug Balancing available solutions

PTFE carbon-graphite

loaded lip seal
up to class VI
T max 315 °C

CV-8450 & CV-8750

Plug Balancing available solutions

Metal C-Ring


up to class V
No temperature limitations

CV-8450 & CV-8750

Plug Balancing available solutions

Carbon-graphite rings


up to class IVS1
No temperature limitations

CV-8450 & CV-8750

Plug Balancing available solutions

Balanced trim with pilot plug


class V and over
No temperature limitations

CV-8450 & CV-8750

 

Main features

Specially designed for critical service applications, where higher performances than conventional contoured plug, screwed seat valves are required, CV-8450 (straight way body) & CV-8750 (angle body) series valves feature a cage based robust, simple and reliable design with a wide range of anti-noise, anti-cavitation and velocity-controlling trims for heavy-duty applications.
All valves have quick change design with seat locked by the drilled cage also guiding the plug for the whole stroke, realizing flow control and allowing plug balancing to reduce actuating forces.
The trim design, with internal thermal differential compensation system, allows to extend working temperatures from -55 °C (-196 °C for the cryogenic series) up to 566 °C.
A large number of plug balancing solutions allows to reach highest sealing classes in the whole range of operating temperature with reduced actuating forces.
Standard, low noise, single and multi-cage trims in the flow capacity range from rated Cv 0.05 to over 6000 with equal-percentage or linear flow characteristic, allow to withstand most process solution by avoiding noise, cavitation and erosion.
Special designed VeCo-LT multi-path, multi-step Labyrinth Trim is available for most critical application on gas and liquid service.
Balanced trim with pilot plug is also available for high temperature compressible fluid service applications, likewise atmospheric vents, where zero leakage is required.
For service on compressible fluids with high differential pressures or in presence of evaporating fluids (flashing), special solutions with fixed orifices installed downstream the valve for a full velocity control can be supplied.

Materials: Wide range of material configurations are available:  Carbon steel (WCC/LCB, A105/LF2), Cr-Mo steels (WC9/C12A, F22/F91), Stainless Steel, Duplex and Super Duplex Steels (S32760, S32550, HVD1), S31050, Nickel Alloys. Other materials upon request.

Actuators: pneumatic actuators with electro-pneumatic or digital positioners, mechanical or hydraulic side or top mounted hand-wheels. Electric or electro hydraulic actuators upon request.

Accessories: bellows for perfect tightness on the stem.

Control Valves for Power Generation Applications Catalogue

Control Valves for Power Generation Applications Catalogue

 

 


Technical Sheet

CV_8000_PRDS Technical Sheet

 

 

 

Sizes / Pressure Classes

Size from DN ½” to DN 24”
Rating: up to Class 2500.

Design Codes & Product Standards

IEC 60534, FCI 70-2, EN 12516, EN 1092, ASME B16.34, ASME B16.5.

Approvals/Qualifications

CE marking 2014/68/UE CE PED and 2014/34/UE CE ATEX,), CU-TR (Russia, Belarus, Kazakhstan, Armenia, Kyrgyzstas).