RootsTM Blowers, Compressors & Controls

www.howden.comRoots Blowers,Compressors & ControlsTM

At the heartof youroperationsHowden has become an acknowledged leader in airand gas handling equipment by producing high quality,highly reliable products that meet, and go on meeting,the process-critical demands placed upon them. Bypreventing unplanned downtime and providingoutstanding lifetime value, Howden products offercustomers’ peace of mind.Although technology has changeddramatically Howden’s philosophy hasnot. Our job is to respond to customers’requirements with leading-edge technology,application expertise and outstandingpersonal service to deliver the long-termvalue they have come to expect from us.2

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Universal RAI* BlowerUniversal RAI* DSL BlowerUniversal RAI-J* BlowerHeavy-duty, bi-lobe rotary blowers in a compact, sturdy designengineered for continuous use withexceptional reliability.This model features Dual SplashLubrication (DSL) on both the gearend and drive end. Dual splash lubeprovides:Incorporates Roots WHISPAIR*technology to reduce noise levels3-5 dBA. Cost effective design More oil capacity Pressures to 15 psig (1034mbar) Cooler operation Greater reliability Vacuums to 16” Hg (539 mbar) Flows to 2370 cfm (4026 m3/hr)Available with metric driveshaft and pipe connections Available with metric drive shaftand pipe connectionsUniversal RAI-J* DSLBlowerDSL features are incorporated into the Universal RAI-Jmodel for long life and quietperformance. All of the Universal RAIfamily of blowers featuredetachable feet, allowingyou to mount the blowerinto your custom systemThis model features mechanicalseals that virtually eliminate leakage. 1/8” (0.3137 cm) NPT purgeport for buffer gas applicationsRAM-J BlowerRAM-VJ BlowerIncorporates Roots WHISPAIRtechnology to reduce noise levels.RAM WHISPAIR units are available with an inlet spray nozzle andseal water flow meter for waterinjection. This feature cools thevacuum unit to enable it to reachdeeper vacuum. Pressure to 18 psig (1240 mbar) Vacuum to 16” Hg (539 mbar) Flows to 3550 cfm (6030 m3/hr)RAM-GJ BlowerStandard gas blowers suitablefor both vacuum and pressureservice. Features a piston ringsystem between the compressionand vent cavities 4Universal RAI-G* BlowerLong life mechanical sealsoffer superior protection andcontainment Vacuum to 24” Hg (813 mbar) Flows to 2500 cfm (4250 m3/hr)

EASYAIR* X2 Factory Blower Package SystemThe EASYAIR X2 Factory Blower Package System isan improved design based upon the popular EASYAIR8000 package. The EASYAIR X2 system providesperformance engineering in a standard package. Itis produced for vacuum or pressure applications,enabling simple, on-site installation. Overall size is smaller than the EASYAIR 8000package and the side-to-side size accommodatesmore packages in a given area No electric fan hookup required as the fan ismounted on the blower shaft and driven mechanically resulting in superior cooling Patented automatic belt tension system optimizesperformance and extends belt life Panel-mounted gauges (inlet filter differential,blowerexhaust temperature and pressure) and externaloil level view for easy monitoring Up to 22dBA free field noise attenuationwith enclosureView with rear panels removedAutomatic belt tensioning system iscounter-balanced to extend V-belt lifeEasy access for filter changesDischarge pressure, filter vacuum anddischarge temperature gauges arestandardOil fill level site glassis visible withoutopening panels5

RAM-DPJ BlowerRAM-DVJ ExhausterROOTS-FLO* BlowerThis RAM WHISPAIR, dry,high-pressure blower features adischarge jet plenum designed toallow externally cooled gas to flowinto the casing and the Whispair jets control pressure equalization.This dry exhauster features ajet plenum designed to allowcool, atmospheric air to flow intothe casing This design allowscontinuous operation at levels toblank-off with a singlestage unit.This heavy duty rotary unit is acompact design engineered forreliable pneumatic conveying ofgrain and similar products. Pressure to 30 psig (2068mbar)Vacuum to 27” Hg (910mbar) Flows to 2400 cfm (4077m3/hr)Flows to 520 cfm (885 m3/hr)2504 DVJ WHISPAIRExhausterThis WHISPAIR dry vacuumexhauster has a discharge jetplenum design which allows cool,atmospheric air to flow into thecylinder. Design permits continuousoperation at vacuum levelsto 20” Hg (675 mbar) with asingle stage unit. Vacuums to 16” Hg (539mbar) Pressure to 15 psig (1034mbar) This unit is your drop inreplacement solutionRCS 800 BlowerRCS-VJ ExhausterPiston rings reduce air leakagewhile lip-type oil seals preventlubricant from entering the airchamber.RCS WHISPAIR units areavailable with an inlet spraynozzle and seal water flow meterfor water injection. This featurecools the vacuum unit to enableit to reach deeper vacuum. Pressures to 18 psig (1241mbar) Vacuums to 16” Hg (539mbar) Vacuums to 24” Hg (810mbar) Flows to 6300 cfm (10710 m3/hr) Flows to 4080 cfm (6930 m3/hr)RCS-J BlowerIncorporates Roots WHISPAIRtechnology to reduce noiselevels.6

DVJ WHISPAIR ExhausterTRI-NADOTM ExhausterTri-RAM* Tri-Lobe BlowerThese blowers have aWHISPAIR discharge jet plenumdesign which allows cool,atmospheric air to flow into thecylinder. This design permitscontinuous operation at vacuumlevels to blank-off with a singlestage unit, without water injection. The DVJ’s cooling designhandles the problems causedby high discharge temperaturesat vacuum levels beyond 16”Hg.This unit’s tri-lobe design resultsin high efficiency and reducesin-pipe pulsation and noise levels.Incorporates Roots WHISPAIRtechnology to further reducenoise levels.The blowers feature Roots WHISPAIRdischarge design which, whencombined with our tri-lobe impellers,delivers quieter operation thanconventional tri-lobe blowers. Flows to 5900 cfm (10030 m3/hr) Flows to 5760 cfm (9790 m /hr) Vacuum to 16” Hg (539 mbar) Single-stage vacuums to 28”Hg(945 mbar) Pressures to 15 psig (1034 mbar) Flows to 16870 cfm (28662m3/hr) Vacuums to 27” Hg (910mbar)3VJ/VJ2 BlowerWater injected, air or gas blower features RootsWHISPAIR plenum with 3-5 dBA quieter operation.Single stage Vacuum to 24” Hg (810 mbar)Two stage Vacuum to 27” Hg (910 mbar) Flows to 43200 cfm (72440 m3/hr) Two stage reduces power 25%7

8RAS-J BlowerRAS-J/RGS-J Forty PSL BlowerAir blower that is available with splash lubrication or true pressure lubrication. Featuresa WHISPAIR plenum with 3-5 dBA quieteroperation.Extended flow range and efficiency with theadvantage of the WHISPAIR plenum Pressure to 35 psig (2413 mbar) Vacuum to 16” Hg (539 mbar) Flows to 43200 cfm (73440 m3/hr) Up to 82% increase in pressure risecapacity Direct connect to 50Hz and 60Hz motorsprovides the largest flow range possiblewithout gear-reducers Available with true pressure lubrication Mechanical seals are also available foryour unique gasRGS-J BlowerRGS-J BlowerRGS-HVB BlowerThis is a Rotary Positive DisplacementGas Compressor with Integral lubrication to supply oil to the bearings,timing gears, and mechanical faceseals. The Compressor is direct drivenby an electric motor. The oil systemincludes a motor driven auxiliary oilpump in the forefront.Heavy-duty gas blowers designedfor continuous service. The wraparound plenum and WHISPAIR jethandles rapid backflow of gas intothe blower from the discharge area.Designed for applications tothe single digit micron rangewhen used in series with abacking pump. Steel Degassing Pressure to 35 psig (2413mbar) Laser Booster Vacuum to 16” Hg (542 mbar) Altitude Chamber Flows to 43200 cfm (73440 m3/hr)

Type OIB, D and DH Centrifugal CompressorsType IGC Centrifugal CompressorCan be used in a variety of different process gas applications. Advanced sealing technologies are availablefor use with hazardous gases.Suitable for use with a variety of constant speed orvariable speed drivers. Local energy costs and yourrequirements will determine the most economicalmethod of drive for your application.These compressors can be designed for low to highpolytropic head applications as well as high casingtemperature and pressure conditions. Polytropic heads to 40,000 ft. Flows to 300,000 cfm (510,000 m3/hr) Compliance with API Specification 617Independently modulated Inlet Guide Vanes (IGV) andDiffuser Vanes (DV) are controlled to enhance theperformance of the compressor as the applicationconditions vary. Polytropic heads to 50,000 ft. Flows to 60,000 cfm (101,900 m3/hr) Compliance with API Specifications 617 and 672Type H - Multi-Stage Centrifugal CompressorA choice of impeller materials provides efficient,reliable operation with a variety of process gasesat varying temperatures, humidity levels andpressures. Horizontally-split casing compressorsfeature bearing housings that are flange mountedto the case. This design permits easy access formaintenance or bearing inspection. Polytropic heads to 90,000 ft. Flows to 125,000 cfm (212,400 m3/hr) Compliance with API Specification 6179

Roots control solutions for your aeration process are state-of-the-art assuring your plant optimum Dissolved Oxygen (DO) with minimal energy consumption.Aeration Controls and ServicesEnergy Savings Save 25% to 40% compared to manual controlService Contracts Preventive maintenance Reduce consumption and demand charges System monitoring and tuning Assistance in obtaining utility rebates On site field service Most open valve control Reduce system pressureEnergy Reduction Opportunities Integrated aeration systems Coordinate aeration demand and blower supplyair flows Aeration process and blower control Blower control and protectionDirect Flow Control Virtually eliminate pressure control loops Communications with SCADA Systems Revamp Simplified tuning Blower optimization and rebuilds Increased stability Use existing controllers and field devices Reduce energy consumption 5% to 10% Variable Speed Control Positive displacement blowersUpgrade existing control logicwastewater OEM’s Blower and control packages Multistage centrifugal blowers Integrate with OEM processes Single stage centrifugal blowersTechnology Options Combine with variable diffuser vanes foroptimum efficiency IntelliView* process controller PLCs (various)Direct Valve Position Control Eliminate 4-20 mA positioners Direct flow control Dissolved oxygen (DO) Reduce equipment and wiring costs Most open valve (MOV) Reduce calibration and maintenance Pressure controlApplication Engineering Design assistance Direct valve control Application specific control algorithms Analysis of existing operations Variable speed control Savings calculations Simple and complex processes Single basin, multiple basin, and individualgrid control10