Tri-Shark solution-cvm.pdf

8/11/2019 Tri-Shark solution-cvm.pdf

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Everything you need in acontrol valve!

Performance Benefits of TRI-CON with Sharktooth

3 to 36 or DN 80 to DN 900* Class: 150 thru 900 or PN 6 to PN 160 Carbon Steel, Stainless Steel & Exotic Alloys Metal-to-Metal Seating From Cryogenic to 815C Bidirectional Class IV, V, VI Shutoff & ZERO LEAKAGE! Firesafe Design to API 607,BS6755,EN10497 Low Closing & Running Torques Stable Control Light Weight Compactness Low Cost of Ownership Field Replaceable Trim Cartridges

Severe Service Capability

* = Larger sizes available


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Advanced Technology

By inserting the Throttling Trim Cartridges into Triple Eccentric ButterflyValves, control valves are created that exhibit significant improvements inperformance, simplicity, and economy. They have excellent throttlingcharacteristics and provide aerodynamic noise attenuation, and liquidcavitation reductions in a wide range of services from cryogenictemperatures, up to 815C, including liquids, gasses, and steam.


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Triple Offset Valve Geometry


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Sharktooth Plug & Play for theTRI-CON Series!

A Sharktooth Throttling Trim Cartridgeturns the TRI-CON Triple-Off-Set Butterfly Valves into excellent throttlingcontrol valves. Now, just one style of valve can be used for both on-off, andcontrol applications.


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Tight Shut-off

Low Flow

Medium Flow

Maximum Flow

Controlling at every angle!


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8 TRI-CON with Sharktooth

12 TRI-SHARK


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TRI-SHARK

Control Valves are the first zeroleakage triple eccentric type controlvalves exclusively designed forprocess control and throttlingpurposes. They were conceived in acollaborative effort between ZWICK

ARMATUREN GMBH, Yeary

Controls and Dr. Hans Baumann, aforemost expert in control valvedesign. TRI-SHARK Control Valvesrepresent the latest in control valvetechnologies for process controlapplications.

Design: API607Class: 150 thru 900Size: 3" thru 36


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TRI-SHARK Control Valve

As the butterfly vane turns within the Throttling Trim Cartridge, the flow is firstcontrolled via the characterized clearance between the disc edge and the solid,tapered portion of the cartridge; then through the multiple, optimized slots andfinally through the additional open area of the valve to provide:

Reduced Seat

Rangeability Exceeding 100:1

Equal Percentage Characteristic

Noise Attenuation

Reduced Cavitation

Lower Operating Torque also due to downsized trim options


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TRI-SHARK Maintenance friendly through easy replaceable cartridge


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Utah State UniversityWater ResearchLaboratory

Utah State University - Water Research LaboratoryLogan, Utah USA

Empirically Tested andProven for:

Flow Capacity (Cv)

Rangeability

Dynamic Torque

Seating Torque

Incipient Cavitation

Noise Attenuation

Proof of Design


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Energy absorbing Flow Pattern

Flow Laboratory testsverified how individual water

jets impinge upon eachother at approximately onepipe diameter downstreamfrom the Sharktooth Control

Element, thereby convertingkinetic energy in the fluidprior to contacting the pipewall.


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Noise Attenuation

Reduces Aerodynamic Noise

Up to 15 dBA As the vane turns within theSharktooth Throttling TrimCartridge, multiple, optimized,throttling slots are graduallyexposed to flow.Then, at higher flows, when thevane has cleared the contouredslotted portion of the controlcartridge, the resultant lowerpressure drop will alleviate anyfurther noise problems.


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Cavitation Reduction

Anti-Cavitation Properties

Sharktoothstwenty-five percent higher incipientcavitation index allows for higherpressure drops than ordinarybutterfly valves, while exhibitingmuch less noise, cavitation, anddamage.Even if cavitation does occur inhigher pressure drop situations, theshorter vapor jets produced by theslots will avoid the damagingeffects caused by large vapor jets,referred to as super cavitation.


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Dynamic Torque Reduction

More Control with Less Torque

TRI-SHARKsdynamic torque requirements are 60 percentless than ordinary butterfly valves, even athigh-end Cvs, thereby providing exceptionalstability throughout its control range.

TRI-SHARKTriple Eccentric Metal-to-Metal Seatingrequires lower breakaway torques than eitherbutterfly or rotary plug control valves and, itsextended torque reversal point allows for anexpanded rangeof control.


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Flow Characteristic

Excellent Control Range

TRI-SHARKControl Valves have aneffective control range thatextends from 1 percent at 5degrees of travel to 100

percentat 90 degrees of travel.Its equal percentage flowcharacteristic fits the vastmajority of control looprequirements.


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TRI-SHARK Valve RatedCv Factors

Low to High Flow Capability

TRI-SHARKThrottling Trim Cartridges eliminate the lowangle instability inherent in most quarter-turncontrol valves. For instance, ordinary butterflyvalves exhibit poor control at angles of opening

that are less than 25.

TRI-SHARKtechnology greatly extends control rangeabilityto as low as 3 degrees of valve opening to 85degrees while also providing noise attenuationand anti-cavitation benefits.


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Typical StandardServices

Pump By-pass Control

Pressure Reducing

Back Pressure Control

Compressor Surge Control

Flow Control & Balancing

Ballast Water Flow Control

Fire Water Ring Control

Brine Blowdown

Jetty Loading Control

Sea-Water Re-Circulation & Drain

Cooling Tower Bypass

Brine Well Injection

Steam Condensor Inlet

Steam Venting

Natural Gas Pressure Control


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Typical, Severe & SpecialServices

Cavitating Liquids

Noise Reduction in Gas, Steam, & Vapor

Two Phase Fluids

Cryogenic Liquids & Gasses

Fire Safe Shut-off plus Control

Metal to Metal Tight Shut-off plus Control


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Optional ResistancePlatesfor More Attenuation

When your TRI-SHARKcontrol valves exit velocity(UV) for gases exceeds 83m/sec, the installation of aResistance Plate to reducethe aerodynamic noise isrecommended. Similar use ofsuch plates is advised forhigh pressure liquids toreduce excessivehydrodynamic noise,or cavitation.


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Contacts

Zwick France-CVM7 alle des Erables-69200 VenissieuxOffice: +33 437 250 232Email: [email protected] : www.zwick-valves.com

16.05.2013 Zwick Armaturen GmbH 29

Documents

Tri-Shark solution-cvm.pdf