Ast CV-8750 Quick Change Control Valve

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.