SEVERE DUTY (SD) CONTROL VALVES
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SEVERE DUTY (SD) CONTROL VALVES

Copes-Vulcan has been providing control valves and desuperheaters for the power, process and nuclear industries since 1903. Copes-Vulcan provides a wide range of valves for the control of pressure, temperature and flowinduced noise in all types of power plants. Products include severe service and general service control valves, variable orifice desuperheaters, Raven™, trim and steam-conditioning valves and nuclear control valves, as well as custom designed specialty valves. Copes-Vulcan is recognized worldwide as a leader in valves for severe and critical service applications. Our strength...

As a result, the DSCV-SA is at the forefront of modern thermodynamic engineering in steam conditioning. Key to the DSCV-SA’s performance are a number of unique technical innovations developed by Celeros following extensive consultation with customers in the power generation sector. SD Series valves can be fitted with an extensive array of standard and high performance trims to meet most severe duty/critical service requirements. Copes-Vulcan specialty trims such as Raven™, Hush™, Soft-Seated Hush, Tandem and GAD™ are readily available to meet the most severe applications. Additionally,...

blockage, they provide an effective bypass route Raven trim incorporates a unique advanced design for the fluid. With the benefits of the relief points, that is superb at limiting flowing velocities to low the actual fluid flow streams still remain virtually levels resulting in valves providing service that is separate or discrete from each other for best quiet, non-cavitating and non-erosive. velocity control. Raven’s low velocities are achieved through the By manufacturing the flow channels to extremely use of trim cage made by bonding together a close tolerances, Raven’s calculated or...

HUSH® Trim is an advanced concept in control The Port Throttling GAD trim was developed to valve trim for high presssure-drop liquid, gas meet the rigorous requirements of feedwater startup control. Designed to give optimum flexibility in power operated control valves, the trim is available It is a cage guided type trim that provides in double seat, balanced single seat, and tandem excellent control for compressible and noncompressible fluid applications by directing the flow through a series of staged pressure The GAD trim is equally suitable for use with steam drops. This unique trim...

TRIM TYPES A wide variety of trims is available for SD-Severe Duty Control Valves. They are designed to match virtually any severe duty/critical service operational requirement. All SD trims feature a quick-change design to reduce downtime for inspection, maintenance or change out, and most are cage guided, further ensuring smooth, accurate operation. The majority of the trim line is interchangeable between like sizes, and many reduced trims are also available as standard. RAVEN DESCRIPTION/ APPLICATION Raven is Copes-Vulcan’s top-of-the-line high performance specialty trim that offers a...

The trims shown in this bulletin represent the more common selections available. Additional standard, special and custom engineered trims can be supplied as required. Standard stocked trim materials are 300 series and 400 series stainless steel. Other materials are available on special order. GAD Trim is a high performance specialty trim that is cage guided and engineered to meet the rigorous requirements of feedwater control and feedwater startup control. Designed to give optimum flexibility in automated control valves, this trim is available in double seat, balanced single seat, tandem...

DESCRIPTION/ APPLICATION One Stage Hush trim is a specialty trim designed to reduce noise associated with compressible fluids as well as to reduce the undesirable effects of flashing and cavitation that would occur with most single pressure drop trims. The Hush cage consists of a single cylinder with a large number of radially drilled orifices. The fluid exits the orifices as low energy jets resulting in significant reductions in noise or erosion. Although numerous standard designs are available, One Stage Hush is often custom engineered to provide various flow characteristics or optimal...

MODEL 1000 ACTUATORS PNEUMATIC DIAPHRAGM — SPRING OPPOSED Designed specifically for severe duty service, model 1000 actuators can be used in any application where shock and/or vibration are anticipated, or where seismic analysis is required. They are available with 60, 100, 160 260 and 400 in2 (390, 645, 1030, 1680 and 2580 cm2) of effective diaphragm area in both the direct and reverse acting mode. All models are available with manually operated override wheels. To illustrate how the actuator transmits force, the shaded areas shown in the diagrams below will move during the direct and...

Actuators THE SD-700 VALVE ASSEMBLY The SD-700 valve assembly is comprised of an SD valve body, bonnet and trim with the 700 series actuator. In those instances where an SD valve (i.e. body, bonnet, trim, etc.) is necessary, but the use of the heavy duty, 1000 style actuator is not needed, the more economical 700 style operator can be utilized. Series 700 actuators are pneumatic diaphragm operators that have spring return in both direct and reverse acting styles, offering fail-open and fail-closed modes respectively. The pressed steel diaphragm case construction along with the nylon...

SEVERE DUTY (SD) CONTROL VALVES QCOPES VULCAN* SPEED I EXCELLENCE I PARTNERSHIP Celeros Flow Technology Road Two Industrial Estate Winsford, Cheshire CW7 3QL P: +44 1606 552041 F: +44 1606 558275 E: copeinquires@celerosft.com Celeros Flow Technology reserves the right to incorporate our latest design and material changes without notice or obligation. Design features, materials of construction, and dimensional data, as described in this bulletin, are provided for your information only and should not be relied upon unless confirmed in writing. Please contact your local sales representative...