Equilibar BD Series Back Pressure Valves Brochure
OREEMX5 ECISPR standardthangulatorsreBD Series1.5” – 4” Back Pressure Regulators and ValvesFOR GAS, LIQUID AND MIXED PHASE SERVICE
OREE5X eOur performance.Equilibar back pressure regulators outperform the competition,particularly in applications with low flow rates, mixed phase fluids,corrosive media, or extreme temperatures.Our people.Every inquiry gets focused attention from our engineering teamto determine the best possible product for your needs. Every backpressure regulator is hand assembled and tested to meet ourstringent quality standards.Our priorities.Our goal is to exceed your expectations. In an industry wheredelivery times frequently exceed 6 weeks, we offer many of ourstandard products with delivery in about a week.Traditional back pressure regulators set the upstream pressure with a spring. These designs utilize sliding seals and other moving partsthat can introduce hysteresis and other undesired effects into a process. The Equilibar back pressure regulator uses a thin, supplediaphragm as the only moving part. This allows frictionless operation without cracking pressure or hysteresis. The accuracy of theEquilibar back pressure regulator is determined by the accuracy of the pilot setpoint. 2011-2020 Equilibar, LLC
Simply load the Equilibar back pressure regulator witha pilot pressure equal toyour desired back pressureand the Equilibar does therest. This pressure forcesthe flexible diaphragmdown onto a plate oforifices. A rise in inletpressure lifts the diaphragmup to allow excess pressureto be relieved through theoutlet orifices. Similarly, aloss of pressure at the inletcauses the diaphragm tobe pushed closer to theorifices, restricting flowand rebuilding pressureupstream.ElectroPneumaticRegulator– OR –ManualPressureRegulatorE/PDiaphragmPilot (Reference)InletOutletPilot operate your Equilibar back pressure valvewith an electronic pressure regulator for automatedback pressure control.TYPEPRESSURE REDUCINGREGULATORBACK PRESSURE REGULATORSCHEMATICPerformance ComparisonTraditionalSpring-TypeRegulatorsInlet PressureHow It WorksFlowOr set the pilot pressure with a precision pressure reducingregulator for manual back pressure control.BACK PRESSUREREGULATORS VS PRESSUREREDUCING REGULATORSPressure reducing regulators reduce ahigher supply pressure at the inlet downto a regulated lower pressure at the outlet(downstream). Back pressure regulatorswork the opposite way. They regulate theinlet (upstream) pressure by opening uponly as much as necessary to hold back thedesired pressure at the inlet (upstream).CONTROLS PRESSUREDownstreamUpstreamOPENS TOIncrease downstreampressureDecrease upstreampressureCLOSES TODecrease downstreampressureIncrease upstream pressurewww.equilibar.com3
A P P L I C AT I O N H I G H L I G H T SThere are hundreds of potential applications for the unique capabilities of an Equilibar Back Pressure Regulator (BPR). Equilibar backpressure regulators are designed for use in liquid, gas, and mixed phase spanning from ultra low flow rates to extreme high pressures.By using unique combinations of diaphragm and O-ring materials, Equilibar back pressure regulators perform brilliantly in the harshestenvironments that include high temperature and aggressive chemicals.Equilibar BD Series is specifically designed for applications where larger sized valves are required. Following are some examples.Pump Pressure ControlReference PressureThe Equilibar BD regulator can precisely control thedischarge pressure of virtually any type of pump byinstalling the regulator in a return loop back to thesupply reservoir. This pressure bypass setup ensuresconsistent pressure as the application demand risesand falls. Equilibar customers have used this setupfor spray systems, bottle filling and many other “ondemand” type applications that have variable flow.Equilibar BD Series To Application To ApplicationPositive PressurePumpA manual pilot setpoint regulator may be used forsimplicity or an electro-pneumatic pilot regulatormay be used to computer automate the system.Supply ReservoirPrecision Control with Closed LoopPID ControllerSet Point 0-10 VDCor 4-20 mAPressure Feedback0-10 VDC or 4-20 mAPressure TransducerProcessAirCompressorThe Equilibar BD Series valve provides numerous benefits overtraditional control valves in these closed loop applications.Such benefits include extremely wide flow range, ultra fastreaction times, and ease of PID tuning.Electro-PneumaticRegulator w/ExternalFeedbackEquilibar BDSeries ValveFlow 2011-2020 Equilibar, LLCFor most applications, the Equilibar BD meets performanceexpectations when controlled by a manual pressure reducingpilot regulator. However, for some automation applications,it is useful to have closed loop control using an externalpressure transmitter. By using an electro-pneumatic regulatorwith external feedback, it is possible to automatically adjustthe pilot setpoint based on the feedback from the pressuretransducer.
Glove Box / Ventilation ControlThe Equilibar BD Series regulator is a good choicefor controlling gas pressures in glove boxes or otherventilation applications. The BD can be constructedwith flexible diaphragm material for high sensitivityand accuracy at low pressures, even at relatively highflow ratesAir CompressorGlovebox PositivePressure ChamberSetpointRegulatorAirVentEquilibar BDSeries BPRSupply gas can be provided by a blower or otherflow control means. Pilot setpoint pressure can beregulated by an electro-pneumatic regulator (shown)or manual spring regulator.FlowControlFuel Cell TestingProcessComputerLorAirFuel CellGas Supply onProductsEquilibar BDSeries BPRThe Equilibar BD Series back pressure regulator is an excellent fit forfuel cell testing systems. An Equilibar BD is used to control the outletpressure of the fuel cell while it is being performance tested.Customers choose Equilibar valves because they accurately maintainpressure from really low flow rates up to very high flow rates; theywork accurately at very low pressures where fuel cells operate; andthey can easily handle wet, hot, corrosive exhaust gasses producedby the fuel cell.Biogas System Pressure ControlMany wastewater treatment plants use anaerobic digestion toprocess their biological solid wastes, reducing landfill volumes andproducing valuable biogas used to generate power. Controllingthe biogas pressure that feeds a combustion engine is critical,especially because the flow rate coming out of the digesterfluctuates.AirManual PilotRegulatorFromDigesterCustomers choose the Equilibar BD valve in this applicationbecause of its ability to maintain low pressure at high flows. Themultiple orifice design also delivers fast response required for ibar BDSeries BPRReliefValveEngineBlowerGenerator5
Manual Pilot Control OptionsMANUAL CONTROLEquilibar Precision Back Pressure Regulators get a pilot control signal using a fluidsetpoint pressure (also called ‘reference’ or ‘pilot’ pressure) on the top port. This pilotfluid is typically compressed air or nitrogen.Below are some popular pressure reducing regulators used to control the pilot signal forEquilibar back pressure regulators.APPLICATIONSUPPLYPRESSUREPORTSEQUILIBAR PARTNUMBEROUTLET PRESSURE RANGE102120 - 2 psig102220 - 10 psig102020 - 20 psig102320.5 - 30 psig102421 - 60 psig102622 - 150 psig102723 - 200 psig102825 - 300 psig102925 - 400 psigLPR2-B-7.25-7 in H2OLPR2-B-101-10 in H2OLPR2-B-281-28 in H2OSensitivity: 0.02 in H2OLPR2-NB-7.25-7 in H2OStability: 0.06in H2OLPR2-NB-101-10 in H2OLPR2-NB-281-28 in H2OREPEATABILITY &SENSITIVITYMEDIUM PRESSUREModel 10Max 500psig1/4” NPTLess than 0.125 in H2OULTRA LOW PRESSURELPR2 UltraLow PressureRegulator 2011-2020 Equilibar, LLC5 - 30 psig(StableRegulated)1/4”Inlet Outlet(No Gauge)
Electronic Pilot ControlPROCESS AUTOMATIONAutomating your process pressure is easily accomplished by using an electronic pressureregulator to provide the pilot setpoint pressure to the Equilibar dome-loaded backpressure regulator.These devices are custom tuned on the bench to work perfectly with the Equilibarprecision back pressure regulators or vacuum regulators.Contact Equilibar or visit our website for assistance in choosing a pilot control systemfor your application.REGULATORQPV SeriesDESCRIPTIONControl Pressures upto 150psig(10 Bar) with highresolutionKEY FEATURES Min range: 0-0.3 in H2O Max range: 0-150 psig Available in gauge, absolute, vacuum and vacuum-positive ranges True proportional valve action Resolution: 0.005% - 0.2% FS 4-20mA and 0-10VDC analog I/O Optional DeviceNet or Serial Digital RS232/485Equilibar PVC BD16 pilot operated by aModel 10 manual setpoint regulator.Equilibar stainless steel BD12 pilot operatedby a QPV1 electronic pressure regulator.www.equilibar.com7
BD Series SpecificationsFOR LIQUID, GAS & MIXED PHASE PROCESSESSEE FIGURE 1MODELPROCESSPORTSIZEREFERENCEPORT SIZEBODYMATERIALMAXPRESSURERATINGMIN CV1MAX CVDIM APSIG (BAR)DIM BINCH (MM)BD12S1.5"1/4”Stainless Steel 316/316L45 (3.1)1E-02139.5 (241)3.9 (99)BDM12S1.5"1/4”Stainless Steel 316/316L120 (8.3)1E-02139.5 (241)4.0 (102)BD12A1.5"1/4”Anodized Aluminum75 (5.2)1E-02137.6 (193)3.7 (94)BD12P1.5"1/4”PVC30 (2.1)1E-02139 (228)4.3 (109)BD16S2"1/4”Stainless Steel 316/316L70 (4.8)3E-022811 (280)4.1 (104)BDM16S2"1/4”Stainless Steel 316/316L150 (10.3)3E-022811 (280)5.7 (145)BD16A2"1/4”Anodized Aluminum50 (3.4)3E-02289 (228)4.3 (109)BD16P2"1/4”PVC30 (2.1)3E-022811 (280)5.1 (130)BD24S3"1/4"Stainless Steel 316/316L45 (3.1)6E-026013 (330)5.3 (135)BDM24S3"1/4"Stainless Steel 316/316L85 (5.9)6E-026013 (330)6.2 (157)BD24A3"1/4"Anodized Aluminum30 (2.1)6E-026012.5 (317)5.9 (150)BD24P3"1/4"PVC20 (1.4)6E-026015 (381)8.8 (224)BD32S4"1/4"Stainless Steel 316/316L20 (1.4)1.5E-0116020 (508)8.1 (205)BD32A4"1/4"Anodized Aluminum20 (1.4)1.5E-0116020 (508)8.1 (205)20 (508)9.6 (244)BD32P4"1/4"PVC20 (1.4)1.5E-011601 Min Cv is dependent on diaphragm option. Values indicated are conservative. Contact an application engineer for specific details.TECHNICAL SPECIFICATIONSWETTED MATERIALSMax OperatingPressurePressure ratings listed in the table are the maximumpossible pressure to which a unit may be configured.Units can be configured for optimum performance atlower pressures. Speak with an application engineerfor more information.Proof Pressure150% Rated Pressure1Design Pressure400% Maximum Body Pressure2Temperature RatingUp to 150C(Metallic Body, PTFE Diaphragm, Viton O Rings)Up to 200C(Metallic Body, Metallic Diaphragm, Viton O Rings)Up to 300C(Metallic Body, Metallic Diaphragm, Kalrez O Rings)All Equilibar units are tested to 150% of their rated pressure prior to shipment.Designed according to ASME B31.3, which incorporates a 4X safety factor.Polymer models not reccommended for compressible gas applications.12Body MaterialStainless Steel 316/316L (standard)Also available: Hastelloy C276, Titanium, ZirconiumO-RingsViton (FKM) (standard)Also available: Kalrez (FFKM), PTFE, EPDM, Buna-NDiaphragmPTFE/Glass Laminate (standard)Also available: Stainless Steel SS316/316L, HastelloyC276, Virgin PTFE, FKM, Polyimide, Buna-N, PEEK,EPDMViton and Kalrez are registered trademarks of DuPont. VCO and VCR aretrademarks of Swagelok.PORTING OPTIONSNOTATIONTYPENNPT (Standard)BBSPPHTriclampF150# FlangeCCustomG300# FlangeOSwagelok VCO RSwagelok VCR SSAE 2011-2020 Equilibar, LLCFigure 1 Dimension reference drawing*DIM A - valve takeoutDIM B - height from center of inlet/outlet portBA*Aluminum elbows are square.Tabulated dimensions are for guidance.Contact an application engineer forspecific details.
Ordering 1121314BD1110MODEL TYPE9BD BD2BOLTS(Factory Selected)PORT SIZE10PRESSURE RATING121.5”162”243”11TEMPERATURE RATING324”4040C (Polymer Units)BODY MATERIAL6060C (Metallic Units)3This is the maximum pressure you would like your unit to beconfigured to accept. Must be equal to or less than the maximumrated pressure (in psig).S Stainless Steel 316/316LPPVCAAnodized AluminumOthers available. Consult an application engineer for assistance12Others available. Consult an application engineer for assistanceDIAPHRAGM MATERIALGPTFE (Glass Reinforced)BBuna-N (Nitrile)FKM Fluoroelastomer4PORT THREADSVNNPTM EPDMHTriclampEBBSPPF PTFE (Virgin)F150# Flanges5RECESSI Polyimide13(Factory Selected)6MOD #PolyethyleneDIAPHRAGM THICKNESS(Factory Selected)14(Factory Selected)O RING(Wetted)7REFERENCE PORT THREADSVVVV Viton Shore 75NNPTKKKKBBSPP8CAP MATERIAL (NON WETTED)EEEE EPDMSStainless Steel 316/316LBBBB BunaPPVCAAnodized AluminumKalrez Grade 7075FFFF PTFEItems marked in blue are typically in stock for fast shipmentEquilibar stainless steel BD16with triclamp flanges.PATENTSThese regulators are subject to one or more of these patents: US6,886,591, US7,080,660, US7,673,650, US8,215,336,DE60322443D1, GB1639282, FR1639282www.equilibar.com9
About EquilibarEquilibar provides innovative and robust pressure and flow controltechnology for researchers and engineers worldwide. We are proud todesign, manufacture, and test our patented back pressure regulatorsin our factory overlooking the Blue Ridge Mountains near Asheville,NC, and we are equally proud to work with clients around the worldeach and every day.APPLICATION ENGINEERING–WHAT SETS US APARTUnlike mass-market regulator distributors, we focus on workingwith you, the scientist or engineer with a complex pressurecontrol scenario.Our application engineers work collaboratively with clientsto identify the optimal model, trim, and diaphragm for eachapplication’s unique challenges. No matter where you are on theglobe, you can stay in close contact with your engineer by email,telephone, videoconferencing, or fax.Each application is reviewed by our engineering team toensure quality performance of our products.After installation, your application engineer will support you withstart-up information and fine-tuning as needed.Equilibar, LLC320 Rutledge Rd.Fletcher, North Carolina 28732United StatesTel: 1-828-650-6590Fax: 1-801-504-4439Monday - Friday8:00 AM - 5:00 PM EST12:00 - 21:00 GMTinquiry@equilibar.comOur engineers offer custom designed solutions for themost difficult pressure control challenges. Feel free tocontact us to discuss your situation.Made in theUSAEquilibar’s quality system isISO 9001:2015 certified. Equilibar, September 2020 R5
Air Compressor Pressure Feedback 0-10 VDC or 4-20 mA Electro-Pneumatic Regulator w/External Feedback Pressure Transducer Process Equilibar BD Series Valve Supply Reservoir w. www.euiliar.co 5 Process Computer The Equilibar BD Series regulator is a good cho
The Equilibar back pressure regulator is an exciting breakthrough in precision pressure control. Designed for critical and demanding processes, the patented Equilibar offers unmatched precision across a wide range of pressures and flow rates. How the Equilibar Back Pressure Regulator Works The Equilibar Precision Back Pressure Regulator
the Equilibar Research Series, where the pressure drop is close to 0. In a closed loop system, the reference pressure is altered to control the process pressure. This is often used for higher flows, vacuum or situations of pressure drop over the back pressure regulator. ERC & Equilibar valves The Equilibar back pressure regulator is a
www.equilibar.com Page 1 of 5 30/7/19 R5 828.650.6590 2010-2019 Equilibar LLC GS/GSD Series Precision Back Pressure Regulator REGULATOR USE AND STARTUP The Equilibar GS Series are precision back pressure regulators (BPR’s).
The Equilibar back pressure regulator uses a thin, supple diaphragm as the only moving part. This allows frictionless operation without cracking pressure or hysteresis. The accuracy of the Equilibar back pressure regulator is determined by the accuracy of the pilot setpoint.
www.equilibar.com 3 PRECISION GAS DELIVERY The Series 3000 Pressure Reducing Regulator is often used to pilot operate an Equilibar Back Pressure Regulator (BPR). This is a static pressure and is not under constant flow. Because the Series 3000 is isolated from the process fluid by the diaphragm in the
pressure signal to the dome of either an Equilibar back pressure regulator or an Equilibar vacuum regulator. The QPV1 can then be used to electronically control back pressure or vacuum pressure in line sizes from 1/8 inch through 6 inch by pilot
an Equilibar back pressure regulator which has a pneumatic pilot signal from an electro-pneumatic controller driven by a test computer with the desired rpm, flow, and pressure sequences. The tests can simulate the actual service conditions of varying loads and speeds, enabling a better prediction
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