RAVEN™ TRIM
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RAVEN™ TRIM ©COPES VULCAN®

With its Copes-Vulcan brand, Celeros Flow Technology 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 flow-induced 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. The Copes-Vulcan brand is recognized worldwide as a leader in valves for...

TYPICAL PRODUCT APPLICATIONS Power/Auxiliary Power Units • Boiler Feed Pump Minimum Flow (Bypass) Inter Stage Attemperator Water Control Boiler Drum Level Control Soot Blower Header Control Turbine Bypass Start-Up Steam Vent Spray Water Control Deaerator Level Control Condenser Steam Dump Sampling Systems Boiler Feed Control Oil & Gas • Overboard Water Dump Valves • stream clings to each obstruction in its path, effectively taking the line of least resistance. Also, despite the multiple relief points in the flow path, it can clearly be seen that the fluid does not recombine within the...

REDUCTION IN NOISE Labyrinth type trims have been widely accepted over the last 25 years as being the best solution in cases where high noise and vibration are likely. Their wide acceptance is based on the principles of reducing mass flow and strictly controlling the velocity of the medium within the trim. Copes-Vulcan valve engineers have taken this technology one step further. They found that by splitting the outlet flow of each labyrinth path into three or more small mass flows (rather than the one large flow) noise could be reduced by up to 3 dBA more than in a similar design labyrinth...

NARROW WALL DESIGN ALLOWS MORE STAGES OF DROP PER DISC By its very design, the RAVEN™ trim allows for many more stages of drop than conventional tortuous path trims. Superior to other velocity control trims, RAVEN™, through the use of a consistent narrow wall design, typically is more efficient at passing flow or allowing more turns or stages of drop in a given valve size. MANUFACTURED TO EXACTING TOLERANCES By manufacturing the flow channels to extremely close tolerances, the RAVEN™ trim's calculated or predicted versus actual pressure drops are significantly more accurate than...

ADAPTABLE FLOW DIRECTION Flow can be either over or under the plug depending upon the fluid, the service and, in some instances, the piping configuration. TIGHT SHUTOFF Equipped with various plugs (eg. unbalanced, balanced, tandem, etc.), RAVEN™ can provide shutoff classes ranging from ANSI/FCI 70-2 Class IV to VI and MSS-SP-61. For particular applications Celeros can also supply our patented ZERO leakage design. EASILY SERVICED Quick-change design with no threaded or welded-in parts. Seat ring is a separate replaceable item. RESISTS PLUGGING AND GALLING A pressure-balancing groove inboard...

TURNS/STAGES OF PRESSURE DROP Application specific up to 60 or more RANGEABILITY 100:1 or greater TRIM CHARACTERISTICS Equal percentage, linear or customized VALVE SIZES 1.5-36” (38-9i4mm) and customized sizes PRESSURE RATINGS ANSI 150-4500 BODY STYLES Straight-through globe, offset globe/Z pattern, angle style BODY ENDS Flanged, butt weld (to any standard or special requirement) or clamped STANDARD TRIM MATERIALS • Disc Stacks: 300 or 400 Series stainless steel, Inconel or other materials as required • Plug & Seat: hardened 420 stainless steel, Stellited 316 stainless steel or other...

RAVEN™ TRIM QCOPES VULCAN* SPEED I EXCELLENCE I PARTNERSHIP EUROPE Winsford, UK P: +44 1606 552041 E: cv.aftermarket@celerosft.com AMERICAS Houston, USA P: +1 281 231 3690 E: copeinquires@celerosft.com ASIA Singapore Shanghai, CN MIDDLE EAST/AFRICA Abu Dhabi, UAE P: +971 2 408 1900 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...