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VERSATILEDresser Flow Control offers the Masoneilan® 21000 Series heavy top-guided globe valve to meet awide range of automated process control applications.The 21000 Series product line features a single-porteddesign configuration, which permits numerous trim,actuation, and instrumentation solutions including:

• Lo-dB® Noise Attenuation

• Anti-Cavitation

• Reduced Capacity

• Advanced Digital Positioning & Control

• Tight Shutoff

• Environmental Packing

RELIABLERugged top-guiding of the plug ensures maximum valve stabilityunder the most adverse conditions. The inherent ruggedness of the21000 Series has been field-proven over many years of continuousoperation in plants around the world.

HIGHPERFORMANCEOptimum control performance is provided through thecombination of trim designs, actuator stability and shutoffcapabilities, and superior valve positioning. The 21000 Series is also available in various materials,pressure ratings, and end connections offering a complete high performance valve platform.

• Single & Double-Stage Low Noise and Anti-Cavitation Trim• Hardened Trim Standard (Stellited Trim)

• Quick Change or Threaded Seat Rings• Reduced Capacities & Microflow Trim

• Equal Percentage & Linear Contours• UOP Lockhopper Trim

• Soft Seat Design

Various Trim Options

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• Larger Post Guide Area vs. Other Globe Valve Designs• Located Away from Flowstream• Provides Better Stability and Control

• Multiple End Connections• Various Materials• Angle Body Configuration• Bellows Seal Design• Piston Actuation Option• Extension Bonnet• Cryogenic Configuration• Low Emission Packing• DIN Version Available

Key Features• Compact Multi-Spring Design Minimizes Stem Side Loading• Field Reversible Without Additional Parts • Rolling Diaphragm Minimizes Wear• Constant Effective Area for Smooth Linear Control• 5 Sizes Available to Suit Your Application Requirements• 4 Standard Spring Ranges for Wider Application Envelope• Side Mounted Handwheel Option

Spring Diaphragm Actuator

87/88Actuator

Heavy Top Guiding

Design Flexibility

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Customer Benefits

Reduced Noise LevelsThe optional Lo-dB® trimdesigns provide single-stageand double-stage noiseattenuation benefits.

Potential noise reduction levelsof up to 25 dBA are possible,depending on the specificoperating conditions.

Long Life-CycleOptional Anti-Cavitation trim isalso available in single-stageand double-stage

configurations. Propercontrol of dynamiccavitating conditions isextremely important for

continuous highperformance andoperation ofcontrol valves.

Lower CostsDependable tight shutoff of acontrol valve minimizes loss ofprocess fluids, and canpotentially eliminate the need forseparate isolation valves. Theoptional soft-seat design,provides bubble-tight shutoff

capabilities in accordance withANSI/FCI and IECrequirements.

Trouble Free OperationHeavy top-guiding ensures

stable and optimized operationof the 21000 Series throughout

the entire stroking range. The effects of unexpectedsystem upsets or heavyvibration are minimized withthis construction.

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HazardousEmissionsControlThe optional Bellows Sealconfiguration can ensure zeroleakage to atmosphere for anyapplication involving highly toxicand dangerous fluids. Positivesealing and high life-cycleoperation are combined forreliable and safe operation.

Low TemperatureOperationThe 21000 Series is also available in acryogenic configuration for effective andproven process control performance atextremely low temperature conditions. Thisis accomplished by using a combination ofextended bonnets and appropriatematerials.

High ProcessYieldsThe 21000 Series can beequipped with variousMasoneilan advanced digitalpositioners and controllers for

enhancedperformance and control.This results in higherprocess yields and real-timediagnostics capabilities to

support predictive plantmaintenance programs.

Masoneilan offers the Smart Valve Interface (SVI®)with HART® communications and the MasoneilanFVP™ for FoundationFieldbus applications.Both instruments offeradvanced controltechnology, providinghigher precision forpneumatically actuatedcontrol valves.Masoneilan also offersthe ValVue® software program for PC-basedcommunications with these advanced devices.

Reduced Operating CostsThe simple construction and flexible designfeatures of the 21000 Series, result in lowermaintenancecosts and longerproduct life-cycles. Thisversatile productline allowscustomers tosolve a multitudeof control valve applications using a common platform.

Clean Air ComplianceThe optional LE® Packing system

significantly minimizesatmospheric emissions fromthe stem seal area. Thisunique feature helps toensure compliance with anyenvironmental safety and

emissions controlrequirement.

1 Body Carbon Steel, Stainless Steel, Chrome-Moly, Other Alloys

2 Bonnet Carbon Steel, Stainless Steel, Chrome-Moly, Other Alloys

3 Plug Stainless Steel, SS with Hardfacing, Stellite, Teflon Soft Seat

4 Seat Ring Stainless Steel, Stainless Steel with Hardfacing

5 Stem Stainless Steel6 Cage Stainless Steel7 Guide Bushing Stainless Steel, Nitronic 608 Gaskets Stainless Steel with Flexible Graphite

Filler

9 Packing PTFE, Flexible Graphite, LE Packing

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Product Specifications

Sizes 3/4” to 6” (20mm to 150mm)

Body Ratings ANSI Class 150 to Class 2500 (PN 10 to PN 420)

Leakage ANSI/FCI & IEC Class IV, V, and VI

Cv Range 0.11 to 400

Temperature Range -320oF to +1050oF (-196oC to +566oC)

Operating Range

RF Flanged • •Socket Weld •Threaded •RT Joint • •Butt Weld • •

End Connections

3/4” to 2” (20 to 50 mm)

3” to 6” (80 to 150 mm)

Connections

ANSI Class 150 to 2500 (PN 10 to 420)Valve Size

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2

3

4

5

6

7

8

9Materials of Construction

Consult factory for other materials, ratings, and connections available

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Numbering System1st8

2nd 2nd1

3rd 4th 5th1st2

Actuator Type87 Spring Diaphragm

Air to Close88 Spring Diaphragm

Air to Open

BodySeries

21

ControlCharacteristic0 Undefined1 Linear2 Equal

Percentage

Seat Type0 Undefined4 Quick

Change5 Threaded

6th

Plug Type0 Undefined1 Contoured6 Soft Seat7 Single Stage

LodB® / Anti-cavitation

8 Double StageAnti-cavitation

9 Double StageLodB®

OptionalConfigurationA AngleBS Bellows Seal

•• Flow Directioncontoured: flow-to-openLo-dB®: flow-to-openanti-cavitation: flow-to-close

•• Body1

type: high capacity globe orangle

•• Bonnettype: bolted:

standardextension

•• Body and Bonnetmaterials: carbon steel

316 stainless steelchrome-molybdenum steelothers

•• Trimplug type: contoured

soft-seatLo-dB® (1 or 2 stages)Anti-Cavitation (1 or 2 stages)

seat ring: threadedquick change

guide: heavy top guidedcapacity: full area

reduced capacity in all sizesCv ratio: 50:1

flow:characteristic: linear

equal percentage

•• Actuatortype: spring diaphragmhandwheel: optional

General Information

1 External shape of body will vary as depicted based on different type of casting processes used. Form, fit and function are identical.

SALES OFFICE LOCATIONS

www.masoneilan.com

AUSTRIADresser Valves Europe GmbHKaiserallee 14A-2100 Korneuburg (near Wien), AustriaPhone: 43-2262-63689Fax: 43-2263-6368915

BELGIUMDresser Europe S.p.r.L.281-283 Chaussee de Bruxelles281-283 Brusselsesteenweg1190 Brussels, BelgiumPhone: 32-2-344-0970Fax: 32-2-344-1123

BRAZILDresser Industria E Comercio LtdaDivisao MasoneilanRua Senador Vergueiro, 43309521-320 Sao Caetano Do SulSao Paolo, BrazilPhone: 55-11-453-5511Fax: 55-11-453-5565

CANADAAlbertaDresser Flow ControlDI Canada, Inc.Suite 1300, 311-6th Ave., S.W.Calgary, Alberta T2P 3H2CanadaPhone: 403-290-0001Fax: 403-290-1526

OntarioDresser Flow ControlDI Canada, Inc.5010 North Service RoadBurlington, Ontario L7L 5R5 CanadaPhone: 905-335-3529Fax: 905-336-7628

CHINADresserSuite 2403, Capital Mansion6 Xinyuannan RoadChao Yang districtBeijing 100040Phone: 86-10-6466-1164Fax: 86-10-6466-0195

FRANCEDresser Produits Industriels S.A.S.Division Masoneilan 4, place de Saverne92400 CourbevoieFrancePhone: 33-1-49-04-90-00Fax: 33-1-49-04-90-10

GERMANY Dresser Valves Europe GmbHKlein-Kollenburg-Strasse 78-8047877 Willich, Germany Mailing Address:P.O. Box 120847860 Willich, GermanyPhone: 49-2156-9189-0Fax: 49-2156-9189-99

INDIADresser Valve India Pvt. Ltd.305/306 “Midas” - Sahar PlazaMathurdas Vasanji RoadJ.B. Nagar - Andheri EastMumbai, India 400 059Phone: 91-22-835-4790Fax: 91-22-835-4791

ITALYDresser Italia S.r.L..Masoneilan OperationVia Cassano, 7780020 Casavatore (Naples), ItalyPhone: 39-81-7892-111Fax: 39-81-7892-208

JAPANNiigata Masoneilan Company, Ltd.20th Floor, Marive East TowerWBG 2-6 Nakase, Mihama-KuChiba-shi, Chiba 261-7120, Japan Phone: 81-43-297-9222Fax: 81-43-299-1115

KOREADresser Korea, Inc.#2107 Kuk Dong Building 60-1, 3-Ka, Choongmu-roChung-Ku, Soeul, 100705Phone: 82-2-274-0792Fax: 82-2-274-0794

KUWAITDresserP.O. Box 242Safat 13003, Kuwait Courier:Flat No. 36, Floor 8Gaswa Complex, MahboulaKuwaitPhone: 965-9061157

MALAYSIADresser Flow Control - Far EastBusiness Suite 19A-9-1Level 9, UOA Centre No. 19 Jalan Pinang50450 Luala Lumpur, MalaysiaPhone: 60-3-2163-2322Fax: 60-3-2163-6312

MEXICODresser Valve de Mexico, S.A. deC.V.Henry Ford No. 114, Esq. FultonFraccionamiento Industrial SanNicolas54030 Tlalnepantla Estado de MexicoPhone: 52-5-310-9863Fax: 52-5-310-5584

THE NETHERLANDSDresser Valves EuropeSteenhouwerstraat 113194 AG HoogvlietThe NetherlandsMailing Address:P.O. Box 640NL3190 AN Hoogvliet RTThe Netherlands Phone: 31-10-438-4122Fax: 31-10-438-4443

SINGAPOREDresser Singapore, Pte. Ltd.16, Tuas Avenue 8Singapore 639231Phone: 65-861-6100Fax: 65-861-7172

SOUTH AFRICADresser Ltd., South Africa BranchP.O. Box 2234, 16 Edendale Road Eastleigh, Edenvale 1610 Republic of South Africa Phone: 27-11-452-1550Fax: 27-11-452-6542

SPAINMasoneilan S.A.C/ Murcia 39 C08830 Sant Boi de LlobregatBarcelona, Spain Phone: 34-93-652-6430Fax: 34-93-652-6444

SWITZERLANDDresser Valves Europe SAFrauntalweg 76CH-8045 Zurich, SwitzerlandMailing Address:P.O. Box 3568CH-8021 Zurich, SwitzerlandPhone: 41-1-450 28 91Fax: 41-1-450 28 95

UNITED ARAB EMIRATESDresserMiddle East OperationsPost Box 61302R/A 8, Units JA01/JA02Jebel Ali Free ZoneUnited Arab EmiratesCourier:Units Nos. JAO1 + JAO2Roundabout 8Jebel Ali Free ZoneUnited Arab EmiratesPhone: 971-4-8838-752Fax: 971-4-8838-038

UNITED KINGDOMDI U.K. LimitedTrevithick WorksGillibrands Estate, SkelmersdaleLancashire WN8 9TU, England United KingdomPhone: 44-1695-52600Fax: 44-1695-52662

DI U.K.Unit 4, Suite 1.1, Nobel HouseGrand Union Office ParkPacket Boat Lane, UxbridgeMiddlesex UB8 2GH, EnglandUnited KingdomPhone: 44-1895-454900Fax: 44-1895-454919

UNITED STATESNorthern RegionDresser Flow Control85 Bodwell StreetAvon, MA 02322-1190Phone: 508-586-4600Fax: 508-427-8971

Southern RegionDresser Flow Control11100 West Airport Blvd.Stafford, TX 77477-3014Phone: 281-568-2211Toll Free: 800-847-1099Fax: 281-568-1414

South Texas OperationsDresser Flow Control4841 Leopard StreetCorpus Christi, TX 78408-2621Phone: 361-877-2414Fax: 361-584-1196

BH1080 (10-03-01)