Research Precision Back Pressure Regulators
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Transcript of Research Precision Back Pressure Regulators
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page 1
Precision Back Pressure Regulators
Research Series Low fl ow / Laboratory scaleGas, Liquid & Mixed Phase Service
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Research SeriesLow fl ow / Laboratory scaleGas, Liquid & Mixed Phase Service
Precision: within 0.5%Pressure: 0.02 to 5000 psigTemperature: to 327C (620F )Flow: 0 to 20,000 ml/min
Chemically Compatibile Materials:
Unique Diaphragm Regulator Technology:Dome-loaded design is 5X more precise than traditional spring loaded regulators
Elegant friction-less diaphragm is the only moving part
Suitable for ultra-pure and aggressive chemicals
Two modes of operation:
Key Applications: Catalyst research
Reservoir core analysis
1/8 HP1 - SS316LAvailable to 5000 psig
Precision Back Pressure Regulators
ZF1 with HPLC (Valco-Style) fi ttingsSS316L body, SS316L Diaphragm,
Kalrez FFKM o-ring
In Stock!Most common confi gurations are in stock for shipment in 2-5 days
e
Material Body Diaphram O-ring
SS316L x x
Hastelloy C x x
Zirconium x
PTFE x x
Polymide x
PEEK x
FKM (Viton) x x
FFKM (Kalrez) x
Manual adjustment by mechanical pilot regulator
Computer automation by electronic pressure regulator
Kalrez and Viton are registered trademarks of DuPont Performance Elastomers
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The Equilibar back pressure regulator is an exciting breakthrough in precision pressure control. Designed for critical and demanding processes, the patented Equilibar o ers unmatched precision across a wide range of pressures and fl ow rates.
Traditional back pressure regulators use springs to gradually open up as the overpressure is used to compress the spring.
The Equilibar back pressure regulator uses only a frictionless fl exible diaphragm to modulate the pressure. It fully opens in less than 1% overpressure in most applications. Our multiple orifi ces allow us to control over incredibly wide fl ow rate ratios - over 1000:1 ratios in most applications - and handle two phase fl ows.
Equilibar back pressure technology is protected by US and foreign patents. Learn more about our precision back pressure technology on our website.
Unmatched Precision...
Sensitivity and Precision - Our Key Performance Advantage
Inlet Outlet
Pilot(Reference)Diaphragm
E/P
Electro-PneumaticRegulator
ManualPressureRegulator
- OR -
2 Set-Point Options
1/4 GS4 SS16 back pressure regulatorwith manual set-point regulator
How the Equilibar Back Pressure Regulator Works
The Equilibar Precision Back Pressure Regulator works like a fl uid transistor by forming a unique force balance on a fl exible diaphragm between three separate pressures.
The fl uid inlet pressure and the downstream outlet pressure exist on the wetted side of the diaphragm. The pilot set-point applies pressure on the non-wetted side.
The lower pressure of the outlet tries to hold the diaphragm in a leak-tight seal with the orifi ces. However, any slight excess between the fl uid inlet pressure and the pilot set-point pressure quickly overwhelms these seating forces and pulls the diaphragm away from the orifi ces.
The pilot set-point pressure acts in a 1:1 ratio to set the pressure to be controlled on the inlet port. As shown at right, this pilot pressure can be supplied by either an electro-pneumatic regulator or a manual regulator.
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Material General Operating Pressures
Polyimide (also PEEK, PVDF, PCTFE) 5 psig to max. body pressure
SS316, Hastelloy C276 50 psig to max. body pressure
PTFE/Glass, PTFE 0.2 psig to max. body pressure
PolyEthylene 0.02 psig to 20 psig
Research Series Models
Standard Research Models
Model Part #Inlet /Outlet
Port
Reference Port
BodyMaterials Dim A Dim B
Max StdPressure
Max Custom
Pressure
Cv Range(precision)
Available EndFittings
NPT (std) (inch) (psig) Min2 Max Std Available
Low FlowLF1 1/8
1/8 NPT1/4 NPT
(PTFE)
SS316L (std)
Hastelloy CPTFE
2.5 1.3 1000 2000
1E-7 0.07NPT
1/16 HPLC
1/8 W125
Autoclave
BSP, VCO-style, VCR- style,
SAE, 1/8 HPLC
(Valco Style)
LF2 1/4
High FlowHF1 1/8
1E-4 0.6HF2 1/4
High Pressure
HP1 1/8
1/8 NPTSS316L
(std) Hastelloy C
2.5
1.45 5000 N/A
1E-6 0.07HP2 1/4 2.75
High Pressure &
Flow
HPF1 1/8 2.51E-4 0.5
HPF2 1/4 2.75
For gas, liquid and mixed phase processesRugged Bar Stock DesignUltra Low Pressure and Flow RangesHigh Precision
Available Diaphragms
Wetted components: Body, diaphragm, o-ring 1 - Minimum Cv dependant on diaphragm and set-point pressure and set-point pressure
Dimensions and Cv values subject to change
3.00
1.50
2.00
P.21
OutletInlet
1/8" NPT Reference Port(All models)
B
A
NL1 mounting bracket fi ts all Research Series Regulators *Also fi ts GS2, GS3, NL2, NL3 standard models
Material Notes
Viton Standard, temp. to 200C
FFKM (Kalrez) Chemical compatibility, temp. to 327C
Available O-Rings (wetted)
Model Part #Inlet /Outlet
Port
Reference Port
BodyMaterials Dim A Dim B
Max StdPressure
Max Custom
Pressure
Cv Range(precision)
Available EndFittings
(inch) (psig) Min1 Max Std Available
Ultra Low Flow
ULF1 1/8
1/8
SS316L (std)
Hastelloy CPTFE
2.5
1.45
3000 5000
~1E-7 (@ 100 psig)
0.05
NPT
1/16 HPLC
1/8W125
Autoclave
BSP, VCO-style, VCR- style,
1/8HPLC (Valco Style)
ULF2 1/4 2.75 ~1E-8 (@1000 psig)
Zero Flow ZF1 1/8 2.5 1000 3000
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Selecting the right Series
* Custom Solution Models are not included in the standard Equilibar patents.
The ZF Series BPR extends Equilibars low fl ow performance down to e ective zero fl ow while maintaining a very stable inlet pressure. The patent pending design uses a soft o-ring to improve fl ow shut-o . This is useful for reservoir core analysis and other lab reactor applications with microscopic or intermittent fl ow rates.
The ZF Series is not suitable for all applications and has a narrower pressure and fl ow operating range. In order to maintain reasonable elastomeric seal life, fl ow rates less than 2 standard liter/minute and set-point pressures below 1500 psig are recommended.
LF Series (Low Flow)The LF Series BPR is capable of low fl ow operation down to about 10 cc/min of gas. Pressure rating to 1000 psig.
HF Series (High Flow)The HF Series BPR is similar to the LF Series, but with higher fl ow capacity.
HP Series (High Pressure)The HP Series BPR has the same performance and design as the LF but with a more robust body rated to 5000 psig.
The ULF Series BPR functions similar to Equilibars LF and HP Series. In some applications, however, the ULF is able to extend low fl ow performance down to 0.01 to 0.1 ml/min (gas). Equilibar application engineers will provide guidance when the advantages of the ULF design outweigh any potential disadvantages.
ULF Series (Ultra Low Flow)
ZF Series (Zero Flow Capability)
Stan
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Mod
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Mod
els
Each of these standard Research Series models is based on our patented Equilibar precision back pressure regulator (BPR) technology. These models are capable of greater than 1000:1 fl ow rate turn-down ratios in most applications. They can also be used with 100:1 turn-down ratio in set-point pressure.
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Pressure Stability That Sets A New Industry Standard...Research Series StabilityThese charts below represent data of the LF1 BPRs pressure stability through an amazing 6 orders of fl ow rates and Cv magnitudes! The inlet pressure of most back pressure regulators varies signifi cantly with changes in process fl ow.
Gas analysis applications such as Petrochemical and Catalyst Research can take real advantage of the unmatched low fl ow capability of these regulators. Equilibar regulators can achieve as high as 10,000:1 fl ow turn down ratios.
High Pressure StabilityEquilibar regulators are able to handle the most extreme pressure requirements with our Research Series regula-tors. The HP1 can reach up to 5,000 psig for high pres-sure applications. Using PTFE/Glass reinforced compos-ites and Stainless Steel 316 diaphragms we are able to meet the pressure and low fl ow requirements of todays most demanding analysis instruments.
0
1000
2000
3000
4000
5000
6000
7000
8000
0
200
400
600
800
1000
1200
1E-9 1E-7 1E-5 1E-3 1E-1
Inle
t Pre
ssur
e, k
pag
Inle
t Pre
ssur
e, p
sig
Cv
High Pressure Performance
Set Point: 1000 psig, 6895 kpag
Set Point: 300 psig, 2068 kpag
4E-6 4E-5 4E-4 4E-3 4E-2 4E-1 4E+0
1
6
60
600
0.01
0.1
1
10
100
0.1 1 10 100 1000 10000 100000
Air Flow, SCFM
Inle
t Pre
ssur
e, k
pag
Inle
t Pre
ssur
e, p
sig
Air Flow, ml/min
Ultra Wide Flow Range PerformanceEB1LF Air Trials
Various Set Points: .04, 0.2, 1, 6, and 30 psig0.06
0.6
6
60
600
0.01
0.1
1
10
100
1E-8 1E-7 1E-6 1E-5 1E-4 1E-3 1E-2 1E-1 1E+0
Inle
t Pre
ssur
e, k
pag
Inle
t Pre
ssur
e, p
si g
Cv
Exponential Cv PerformanceEB1LF Air Trials
Various Set Points: .04, 0.2, 1, 6, and 30 psigVarious Set Points: .04, 0.2, 1, 6, and 30 psig
High Temperature ApplicationsHigh Temperature Seals: Equilibar has developed high temperature (to 327C or 620F ) versions of the Research Series Back Pressure Regulators for use in research reactors and other high temperature processes. These units use DuPont Kalrez O-rings to seal metallic diaphragms. The seals are selected based on your maximum expected temperature, with many available in stock for quick delivery. Each unit is built to order to precisely fi t your application.
Remote Set-Point Controller: Equilibar Back Pressure Regulators are dome loaded with a 1:1 pressure ratio and require a set point pressure reducing regulator which can be remotely located outside of the hot zone. The dome loading consumes no fl uid, so that your temperature control is not infl uenced by fl ow to the reference side of the diaphragm. The set point controller can be manual or electro-pneumatic. See pages 8 & 9 for options.
Research Series
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Applications
Closed Loop ControlFuel Cell TestingThe Equilibar back pressure regulator excels at the de-manding requirements of Fuel Cell test systems. In fact, several of our products were specifi cally designed to meet their requirements of 1000:1 fl ow rate and 100:1 pressure turn-down ratios.
The schematic at right shows how a closed loop control system can be used to provide extremely tight control, even across widely varying process conditions.
Our Research Series are used for the small scale fuel cell test systems, while medium and large systems use our GS and NLB Series respectively.
There are hundreds of potential applications for the unique capabilities of the Equilibar. The Research Series is specifi cally designed for a variety of gas, liquid, and mixed phase applications where precision is a must.
Applications span from ultra low fl ow rates to extreme high pressures. By using unique combinations of diaphragms and o-ring materials, Equilibar regulators are able to perform in the harshest environments that include high temperature and aggressive chemicals.
Catalyst Research ReactorsMany catalyst research applications rely on high performance back pressure regulators to maintain stable pressure at elevated temperatures and down to nano fl ow rates. Because of the Equilibars unique ability to handle two-phase fl ow, it is possible to substitute a low pressure liquid/gas separator for the high-pressure separator.
Reactant #1Set-PointPressure
Two-phaseDome-loaded
Back Pressure Regulator
MFC
MFC
Reactant #2CatalystResearchReactor
PG
Separator
Liquid reactant #3
Sample
MFC
TemperatureControl
ConfiningPressure
Two-phaseDome-loaded
Back Pressure Regulator
Set-PointPressure
LiquidGas
Collector
CO2,gas
Brine
Oil
FM
Reservoir Core AnalysisThere are many types of petroleum upstream core analy-sis applications that depend on back pressure regulators to maintain the pressure downstream of the sample. Core fl ooding (as shown at right), PVT analysis, pyrolysis, slim tube analysis can all benefi t from the ultra-low flow capability of Equilibars Research Series. The ZF (Zero Flow) Series in particular was developed to address the demanding requirements of this industry.
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Application Supply Pressure Ports
Equilibar Part Number
Outlet Pressure Range
Repeatability & Sensitivity
Suggested Pressure Gauge
High Pressure
High Pressure Regulators
Max 6000 psig
1/4 Inlet
Outlet Gauge
HPR-500-B 0-500 psig
Sensitive through a wide range of
pressures
600p-2.5b-2L
HPR-1500-B 0-1500 psig 1500p-2.5b-2L
HPR-2500-B 0-2500 psig 3000p-2.5b-2L
HPR-4000-B 0-4000 psig 500p-2.5b-2L
HPR-6000-B 0-6000 psig 6000p-2.5b-2L
High Precision
Bellofram Type 10
(2-stage)
Max 50 psig
1/4 Inlet
Outlet Gauge
T10LR-25 0.5 to 25 psig
Highly sensitive and stable
Varies 0.005 psi with 25 psi supply
variation
25p-2.5b-2c
Max 150 psig
T10-25 2 to 25 psig 25p-2.5b-2c
T10-60 2 to 60 psig 60p-2.5b-2c
T10-120 2 to 120 psig 160p-2.5b-2c
Compact Economical
BelloframType 41
(1-stage)
Max 250 psig
1/4Inlet
OutletGauge
T41-2 0-10 psig
Highly sensitive
Varies 0.35 psig with 25 psi supply
variation
5p-2.5b-1c
T41-10 0-10 psig 10p-2.5b-1c
T41-30 0-30 psig 30p-2.5b-1c
T41-60 0-60 psig 60p-2.5b-1c
T41-100 0-100 psig 100p-2.5b-1c
Ultra Low Pressure
LPR2 Ultra Low Pressure
Regulator
5 - 30 psig (Stable
Regulated)
1/4 Inlet
Outlet (No Gauge)
LPR2-B (Bleed)
&LPR2-NB
(Non-Bleed)
.25-7 inWC(0.01 to 0.25 psig) Sensitivity: 0.02
inWC
Stability: 0.06 inWC
0-10 WC0-30 WC1-10 inWC
1-28 inWC
Vacuum
Vacuum Regulators
30hg (Vac)
1/8"Inlet
Outlet (no gauge)
VPR-30 0.4 to 30 inHg
Sensitivity0.1 inHg
20-turn knob
30h-2.5b-2VPR-10 0.4 to 10 inHg
Panel Mount Only
VPR-3 0-3 inHg Consult factory
Manual ControlEquilibar Precision Back Pressure Regulators get their pilot control signal using a fl uid set-point pressure (also called reference or pilot pressure) on their top port.
You can supply your own fl uid set point signal or choose one of the popular pilot set point regulators below.
Set-Point Kits
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Process AutomationAutomating your process pressure is easily accomplished by using an electronic pressure regulator to provide the pilot set-point pressure to the Equilibar dome-loaded back pressure regulator.
Equilibar is proud to represent precision electronic regulators from Propor-tion-Air. These devices are custom tuned on the bench to work perfectly with the Equilibar precision back pressure regulators or vacuum regulators.
Contact Equilibar or visit our website for additional details about the many possible confi guration of these products.
Set-Point Controllers
Regulator Description Key Features
Low Pressure - Ultra Precision Regulator (150 psi max)
QPV Series
Aluminum IP65 enclosure
Optional digital display
4-20 mA or 0-10 VDC
* Min range: 0-0.3 psig, vacuum * Max range: 0-150 psig * Available in gauge, absolute, vacuum and vacuum- positive ranges * Superior proportional valve action * Accuracy: 0.1% - 0.5% FS * Resolution: 0.005% - 0.2% FS * Tuned ready for set-point service * Optional DeviceNet / Serial communication * Factory set for your pressure
Medium Pressure - Precision Regulator (500 psi max)
QB Series
Aluminum IP65 enclosure
Optional digital display
4-20 mA or 0-10 VDC
* Min range: vacuum; 0-1 psig * Max range: , 0 -500 psig * Available in gauge, absolute, vacuum and vacuum- positive ranges * 0.2 to 0.5% FS accuracy * Tuned ready for set-point service * Good for most applications * Factory set for your pressure
High Pressure - Precision Regulator (1000 psi max)
GP Series
Aluminum IP65 enclosure
4-20 mA or 0-10
VDC
* Min range: Vacuum or 0-500 * Max range: , 0 -1000 psig * Available in gauge, absolute, vacuum and vacuum- positive ranges * 0.5% FS accuracy * Factory set for your pressure
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Available Options and Accessories
Equilibar Research Series Back Pressure Regulators are now available in stackable designs to minimize space requirements in parallel analysis systems
Equilibar Research Series ULF unit shown with integrated 1000 psi Proportion-Air GP1 electronic pressure regulator. In this application, the inert process gas was used as the supply source for the GP1.
Equilibar is expanding to higher pressures. This custom EHP1 is rated for 7000 psig.
Equilibar Research Series back pressure regulator shown with integrated HPR 6000 psig manual set-point regulator. Inert gas bottles are often used as the supply gas for these applications.
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Other products from Equilibar
GS Series Back Pressure RegulatorsThis series is ideal for gas and mixed phase applications due to the 2-piece body design.
EVR Series Vacuum RegulatorsThe EVR Series uses the GS Series BPR, but adds a manual set-point kit to make vacuum control of processes easy and simple.
NL Series Back Pressure RegulatorsThe NL Series has the same exact performance as the GS Series BPRs, plus an additional water hammer suppression feature, making them ideal for most liquid applications.
Contact our EngineersAt Equilibar, your applications unique requirements will be carefully addressed by one of our trained application engineers. Please contact us if you have any questions or special requirements.
Web: www.equilibar.com
Email: [email protected]
Telephone: (828)650-6590
Fax: (801)504-4439
Address: Equilibar, LLC 320 Rutledge Road Fletcher, NC 28732
Application Engineering . . .How we are di erentUnlike mass-market regulator distributors, everything about Equilibar is focused on you, the scientist or engineer with a unique pressure control challenge.
We assign an Application Engineer to you, typically within moments of your call. We work with you closely to identify the optimum model, trim, and diaphragm to best meet your challenge. You can stay in touch with your Application Engineer by email, telephone, mobile phone, or fax.
After installation, if there are any unexpected issues, your Application Engineer is still available to support you with start-up information or (if needed) expedited replacement parts.
About EquilibarEquilibar, LLC manufactures and markets our specialized products worldwide. Equilibar branded products are made in the USA, and protected by US and foreign patents.
All of our products are assembled, inspected and tested by trained technicians in Fletcher, NC.
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320 Rutledge Rd. Fletcher, NC 28732Tel: (828)650-6590 Fax: (801)504-4439www.equilibar.com [email protected]