The Ultimate in Precision Control Precision Back Regulators NL Series & NLB Series Liquid, Gas and Mixed Phase Service Gas and stability across widely varying flow rates range: 01 to 2000 psi Standard Body Materials: SS316, PVC Diaphragms: PTFE, Viton, Buna, PE, SS316 Sizes 1/8 through 1 3/8 EB3NL3 SS316 Dome Loaded Design Matches your process pressure 1:1 to the pressure provided on the top reference port In Line ing Opposed inlet and outlet ports Manual Adjustment Use manual regulator to provide set-point Computer Automated Control Use electronic pressure regulator to provide set-point 1/2 EB4NL4 SS316 w/ manual set-point Unique Diaphragm Regulator Technology: 5X more Precise than standard Regulators Dome loaded: for Manual or Automated control Elegant friction-less design Suitable for ultra-pure, hygienic, and aggressive chemicals May, 2010 pg 1
Unmatched Precision 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 3/8 EB3NL3 Teflon (PTFE) How the Equilibar Back Regulator Works The Equilibar Precision Back Regulator works like a fluid transistor by forming a unique force balance on an flexible membrane between three separate pressures The fluid inlet pressure and the downstream exhaust pressure exist on the wetted side of the membrane, separated by a valve seat The reference air pressure exists on the non-wetted side The lower pressure of the outlet tries to hold the membrane in a leak-tight seal with the valve seat However, any slight excess between the fluid inlet pressure and the reference pressure quickly overwhelms these seating forces and pulls the membrane away from the valve seat Traditional backpressure regulators use springs to gradually open up as the overpressure is used to compress the spring The Equilibar pressure regulator uses only a frictionless flexible membrane to modulate the pressure It fully opens in less than 1 psi overpressure; less than 001 psi in some applications Equilibar back pressure technology is protected by US and foreign patents May, 2010 pg 2
Back Regulator vs Reducing Regulator Reducing Regulators (PRR s) are the most common type of regulator They reduce a higher upstream pressure into a controlled, lower downstream pressure A PRR opens to increase downstream pressure and closes to reduce it A Back Regulator (BPR) works in the opposite way, controlling the upstream pressure Just like a relief valve, a BPR closes to increase upstream pressure, and opens to reduce it The Equilibar GS series is a precision Back Regulator that is dome-loaded A fluid signal commands the regulator to control with a 1:1 ratio This signal is supplied via a manual or electronic pressure device NL & NLB Series Precision Back Regulator Inlet, psig 7 6 5 4 3 2 1 0 PRR BPR Air Flow, normal LPM 0 50 100 150 200 250 300 Set Point 3 psi (85 kpa) Low Air Comparison EQUILIBAR vs Fairchild Fairchild 30 BP Precision 3/8" EQUILIBAR 3/8" 0 2 4 6 8 10 12 Air Flow, SCFM 45 40 35 30 25 20 15 10 5 0 Inlet, kpa g Dramatic stability improvement The Equilibar sets a new industry standard in pressure control This chart shows the superior flow stability of the Equilibar over the Tescom regulator Note: Due to the traditional spring actuated back pressure regulation the Tescom performance shows a significantly higher amount of overpressure than the Equilibar regulators over varying flow rates Traditional pressure regulators hold constant pressure until you very the flow rate Precision over varying flow ranges The inlet pressure of most back pressure regulators vary significantly with changes in process flow The chart at right shows how the Equilibar GS regulator holds a constant process pressure even through widely varying flow rates The GS regulator can achieve as high as 10000:1 flow turn down ratios This is extremely useful in applications where the flow consumption varies significantly is maintained stable even with sudeen spikes or drops in flow Inlet, psi g Inlet, psi g 80 70 60 50 40 30 20 10 0 100 10 1 01 Air Performance Comparison EQUILIBAR vs Tescom Air Flow, normal LPM 0 200 400 600 800 Tescom 26-23 High Precision (1/4", 3/8", 1/2") Set Point 30 psi (206 kpa) Equilibar 3/8" Equilibar 1/4" 0 5 10 15 20 25 30 Air Flow, SCFM Ultra Wide Flow Range Performance 3/8" Equilibar GR w/ VT9 diaphragm Air Flow, normal LPM 03 3 30 300 Various Set Points: 25, 5, 1, 2, 5, 10 and 30 psi g 001 01 1 10 100 Air Flow, SCFM 500 400 300 200 100 May, 2010 pg 3 0 100 10 1 Inlet, kpa g Inlet, kpa g
NL Series Features For liquid, gas & mixed phase processes Rugged Bar Stock Design Unique Chatter Suppresion Feature High Precision NL Series Precision Back Regulator A Reference (1/8") B Inlet Outlet 3/8 EB3NL3 SS316 Metallic NL Series Model Inlet /Outlet Reference Standard Body Materials Dim A Dim B Max Std Max Custom Cv Range (precision) Available End Fittings (inch) (psig) Min 1 Max Std Available EB2NL2 1/4 30 16 500 2000 1E-3 10 EB3NL3 3/8 35 17 400 1500 1E-3 18 EB4NL4 EB5NL6 EB6NL8 1/2 3/4 1 1/8 SS316 (std) Carbon Steel (Black Oxide) 45 60 70 19 24 32 400 300 300 1500 1000 1000 1E-3 1E-2 1E-2 30 62 99 EB8NL12 1 1/2 90 46 200 500 1E-1 143 EB10NL16 2 110 55 200 500 3E-1 302 Polymeric NL Series NPT 150# Flange BSP SAE VCO style VCR style Model Inlet/Outlet Reference Standard Body Materials Dim A Dim B Max psig Cv Range (precision) Available End Fittings (inch) PVC, other PTFE Min 1 Max Std Available EB2NL2 1/4 PVC (std) 30 16 100 50 1E-3 10 EB3NL3 EB4NL4 EB5NL6 EB6NL8 3/8 1/2 3/4 1 1/4 PTFE CPVC PVDF Acetal 35 45 60 70 17 19 24 37 100 50 50 50 50 1E-3 1E-3 1E-2 1E-2 18 30 62 99 NPT BSP Flange (PVC, CPVC) Available Diaphragms Material PTFE PTFE/Glass PolyEthylene Viton (reinforced) Buna N (reinforced) SS316 Range 02 psig to max body pressure 5 psig to max body pressure 002 psig to 20 psig 05 psig to max body pressure 05 to max body pressure 100 psig to max body pressure Wetted Components Body & Diaphragm No wetted o-rings Chatter Suppression Ability 1 - Minimum Cv dependant on diaphragm and set-point pressure Dimensions and Cv values subject to change May, 2010 pg 4
NLB Series Precision Back Regulator NLB Series Features For liquid, gas & mixed phase processes1 Rugged Bar Stock Design Features External Elbows (Welded) B NPT Inlet NPT Outlet A 1 EB6NLB8 PVC Metallic NL Series Inlet /Outlet Model Reference Standard Body Materials Dim A Dim B Max Std (inch) EB6NLB8 1 EB8NLB12 SS316 (std) 1 1/2 EB10NLB16 2 EB16NLB24 3 1/8 Carbon Steel (Black Oxide) Max Custom (psig) Cv Range (precision) Min 2 Max 68 21 200 500 1E-2 98 88 31 400 1500 1E-1 143 108 41 400 1500 3E-1 302 127 61 300 1000 6E-1 600 Dim A Dim B Max psig Available End Fittings Std Available NPT Butt Weld Flange Polymeric NLB Series Inlet/Outlet Model Reference Standard Body Materials (inch) EB6NLB8 1 EB8NLB12 1 1/2 EB10nlb16 2 EB10NLB20 2 1/2 Eb16NLB24 3 PVC (std) PTFE 1/4 CPVC PVDF Acetal Cv Range (precision) PVC, other Min 2 Max 70 31 1E-2 99 90 43 1E-1 143 110 30 1E-1 302 130 35 3E-1 34 17 40 6E-1 600 Available End Fittings Std Available NPT Socket Weld Available Diaphragms Material Range PTFE 02 psig to max body pressure PTFE/Glass 5 psig to max body pressure PolyEthylene 002 psig to 20 psig Viton (reinforced) 05 psig to max body pressure Buna N (reinforced) 05 to max body pressure SS316 100 psig to max body pressure Wetted Components Body & Diaphragm No wetted o-rings Chatter Suppresion Ability 1 - Contact factory for liquid applications 2 - Minimum Cv dependant on diaphragm and set-point pressure and set-point pressure May, 2010 pg 5
Applications There are hundreds of potential applications for the unique capabilities of the Equilibar The NL and NLB series is specifically designed liquid, gas and mixed phase services Applications span from ultra low flow 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 Liquid / Pump Control The Equilibar can precisely control the discharge pressure of virtually any type of pump by simply placing the regulator in the return line back to the supply reservoir Use an ectro-pneumatic regulator for the set-point signal for computer automation of your system pressure Or use a manual regulator, as shown to the left, for simple manual control of your system pressure Pulse Generating Applications The Equilibar s unique frictionless direct sealing diaphragm design gives it unprecedented capabilities to generate precision pulse waveforms with millisecond timing Your PLC or computer control system can now create realtime pressure waveforms using any fluid and any pump O R I The system works by using an Electro-Pneumatic Regulator to command the pulse wave in air The Equilibar is able to mirror that same pressure waveform into your process liquid Precision Control with Closed Loop Control For most applications, the Equilibar is precise enough to be used with a simple manual set-point pressure input However, for some automation applications, it is useful to have closed loop control using an external pressure transmitter By using an electropneumatic regulator with external feedback, it is possible to match the reading of your process pressure transmitter exactly to your desired set-point Feedback 0-10 VDC or 4-20 ma Process PID Controller PT Set Point 0-10 VDC or 4-20 ma E/P Electro-Pneumatic Regulator w/ External Feedback air The Equilibar provides numerous benefits over traditional control valves in these closed-loop applications Such benefits include extremely wide flow range, ultra fast reaction times, and ease of PID tuning I O Equilibar Precision Back Regulator May, 2010 pg 6
Gas - Precision Supply Applications (continued) It is possible to use the Equilibar precision back pressure regulator as part of a precision pressure control system, replacing less precise pressure reducing regulators A flow control device meters a constant gas flow The Equilibar is able to vent any excess gas not required by your application The advantage is far greater precision across widely varying flow rates than by conventional regulators Glove Box / Ventilation Control The Equilibar can control gas pressures in glove boxes or other ventilation applications Supply gas can be provided by a blower or other flow control means, Reference pressure can be provided by an elctro-pneumatic regulator (shown) or manual spring regulator I R O Reactor Control / Nitrogen Padding The Equilibar makes it easy to control reactor pressure, or to pad vessels with inert gases such as nitrogen Gas inflows to the vessel can be provided by any convenient means The Equilibar s superior flow range (up to 1000:1) and pressure window (down to 02 psi), gives the user a superior operating window I R O Reference pressure set-point can be provided by the Equilibar LPR2 for pressures below 05 psi, or by an electro-pneumatic regulator for easy computer auto- Vacuum Control The Equilibar can control in the vacuum range just as easily in the positive pressure range The reference pressure can be supplied by a sensitive manual vacuum regulator, or by an electro-pneumatic regulator (as shown) See the Equilibar Vacuum Regulator brochure for additional details Process PG I Electro-Pneumatic Vacuum Regulator E/P O Equilibar Precision Vacuum Regulator Set Point 0-10 VDC or 4-20 ma Vacuum Supply May, 2010 pg 7
NL Liquid Application Sizing Chart Water Performance Curves The chart below is presented to help choose the proper size NL Equilibar for relatively high liquid flows Medium Water Performance This chart illustrates how the Overpressure varies only slightly with increasing Set-Point pressure Precision vs Size For liquid flow applications, larger regulator bodies always increase precision and decrease Overpressure The water performance of a larger regulator EB5NL6 (shown below) exhibits less Overpressure than the EB3NL3 above May, 2010 pg 8
Air Performance Curves Low Flow/Low Air Performance Low flow gas applications reveal the extra-ordinary unmatched precision capable with the Equilibar 3/8 Equilibar Air Performance Trials - High Medium Air Perf ormance The chart below illustrates how the overpressure varies slightly with the increasing Set-Point pressure in the Equilibar 3/8 Equilibar Air Performance Trials - Low Flow May, 2010 pg 9
Set-Point Kits Manual Control Equilibar Precision Back Regulators get their precision from using a fluid set-point pressure (also called reference or pilot pressure) on their top port Customers can supply their own fluid set point signal or chose one of the accessories below Application Ultra Low LPR2 Ultra Low Regulator Supply s 5 to 20 psig (stable) 1/4" Inlet Outlet (no Gauge) Equilibar Part Number Outlet Repeatability Suggested Range & Sensitivity Gauge Sensitivity: 002 inwc LPR2-7i 025 to 7 inwc (001 to 025 psig) LPR2-14i 05 to 14 inwc Stability: 006 (002 to 05 psig) inwc 0-10 inwc* 0-30 inwc* High Precision High Precision Bellofram Type 10 max 50 psig max 150 psig 1/4" Inlet Outlet Gauge T10LR-25p 05 to 25 psig T10-25p 2 to 25 psig T10-60p 2 to 60 psig 60p-25b-2c T10-120p 2 to 120 psig 160p-25b-2c CPR-10 0-10 psig Sensitivity: 005 psig 25p-25b-2c 25p-25b-2c Compact Economical Compact Regulators 1/8" max 150 psig Inlet Outlet Gauge CPR-30 0-30 psig CPR-60 0-60 psig CPR-100 0-100 psig HPR-500p 0-500 psig HPR-1000p 0-1000 psig HPR-2000p 0-2000 psig HPR-5000p 0-5000 psig VPR-30hg 04 to 30 inhg VPR-10hg 04 to 10 inhg VPR-3hg 0-3 inhg 10p-25b-1c Repeat-ability 01 psig 30p-25b-1c 60p-25b-1c 100p-25b-1c High High Regulators 3000-6000 psig (typical) 1/8" Inlet Outlet Gauge Sensitive through a wide range of pressures 500p-25b-1c 1000p-25b-1c 2000p-25b-1c 5000p-25b-1c Vacuum Vacuum Regulators to 30 inhg 1/8" Inlet Outlet (no gauge) Panel mount only Sensitivity 01 inhg 20-turn 30h-25b-2 Consult factory Notes * - No gauge port provided on regulator All regulators are self-relieving with continous bleed (consumption) All regulators are designed for air service May, 2010 pg 10
Process Automation Set-Point Controllers Automating your process pressure is easily accomplished by using an electronic pressure regulator to provide the set-point pressure to the Equilibar dome-loaded back pressure regulator Equilibar is proud to represent precision electronic regulators from Proportion-Air These devices are custom tuned on the bench to work perfectly with the Equilibar Contact Equilibar or visit our website for additional details about the many possible configuration of these products Ultra Precision Regulators (QPV / MPV Series) QPV Series Aluminum IP65 enclosure Optional digital display (shown) 4-20 ma or 0-10 VDC MPV Series Same internals as QVP 0-10 VDC command input Card, DIN, or manifold mount * Min range: 0-03 psig, vacuum * Max range: 0-150 psig * Superior proportional valve action * Accuracy: 01% - 05% FS * Resolution: 0005% - 02% FS * Lowest available pressure range in class * Tuned ready for set-point service * Optional DeviceNet / Serial communication Precision Regulators QB1 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 * 02 to 05% FS accuracy * Tuned ready for set-point service * Good for most applications QP1 High Aluminum IP65 enclosure 4-20 ma or 0-10 VDC * Min range: vacuum; 0-1 psig * Max range:, 0-1000 psig * 05% FS accuracy May, 2010 pg 11
Contact our Engineers Other products from Equilibar At Equilibar, your application s 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 equilibarcom Email: inquiry@equilibarcom Telephone: (828)650-6590 Fax: (801)504-4439 Address: Equilibar, LLC 320 Rutledge Road Fletcher, NC 28732 GS Series Back Regulators The GS Series has the same exact performance as the NL Series BPRs This series is made specifically for gas and mixed phase applications due to the 2-piece body design About Equilibar Equilibar, LLC manufacturers 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 Application Engineering How we are different Instrument Series BPRs Our new Instrument Series dome loaded back pressure regulators offer performance up to 5000 psig and temperatures up to 3270C with the use of SS316 diaphragms and Kalrez o-rings Unlike 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 EVR Series Vacuum Regulators The EVR Series uses the GS Series BPR, but adds a manual set-point kit to make vacuum control of processes easy and simple May, 2010 pg 12