Barton/Prime/Cameron公司同美盛科技中国公司共同在差压单元,流量和液位控制方面加强合作

PRODUCTS

Cameron (NYSE:CAM) is a leading provider offlowequipmentproducts, systems and services to worldwide oil, gasandprocessindustries. Leveraging its global manufacturing, salesandservicenetwork, Cameron's 11 operating divisions workwithdrillingcontractors, oil & gas producers, pipelineoperators,refinersand other process owners to control, direct,adjust,process,measure and compress pressures and flows. Thecompanygeneratesannual bookings in excess of $5 billion with morethan16,000employees at more than 250 locations around theworld.Cameron isheadquartered in Houston, Texas and derivesapproximately2/3 ofits business from outside the United States.

BARTON Differential Pressure Units (DPUs) serve asactuatingunitsfor a wide variety of instruments. All modelsfeaturerupture-proofbellows.

Each DPU consists of a Bellows Unit Assembly (BUA)andremovablepressure housings. Within the BUA, flexible bellowsaresecured toa centerplate. In dual-bellows models, themovablebellows arerigidly connected by a dual valve stem thatpassesthrough thecenterplate. Valve seats, in the centerplatepassage,form a sealwith the valves. Contacting the valve stem inthecenterplate is adrive arm pivoted on the end of a sealedtorquetube. The bellowsis filled with a clean, noncorrosive,low-freezingpoint liquid. Arange spring assembly provides tensionagainstapplied pressures.In operation, pressure is applied to bothsidesof the bellows. Anydifference in pressure causes the bellowstomove until the springeffect (range springs) balances out theforce.The linear motion ofthe bellows (proportional to the DP)istransmitted as a rotarymotion through the torque tube.Indual-bellows units, if thebellows are subjected to a DPgreaterthan the unit’s DP rating, avalve closes and “traps” thefillliquid in the bellows — fullysupporting the bellows andpreventingrupture. Since opposingvalves are used, full protectionis providedin either direction.

BARTON chart recorders are the industry standardforaccurate,reliable measurement and recording ofpressure,differentialpressure, and temperature in a wide varietyofapplications. Inaddition, DP models utilize rupture-proofbellowsDPU as theactuating unit — with features like overrangeprotectionandpulsation dampening (on some models).

The 202E is a 12-inch chart recorder that has been widelyusedingas transmission and distribution fields –accuratecalibration,even under extreme variations in staticpressure andambienttemperatures. The 202E is available in 1 to 4penconfigurations(DP+3 additional pens). The additional pens canbeused to recordtemperature and supplemental pressure data. Theunitis actuated bya BARTON Model 199 DPU, with standard and NACEunitsavailable (upto 6,000 PSI/414 bar SWP) — see DPU bulletin#21700for details.Static pressure and temperature pens are actuatedbyprecisionwound elements.

BARTON chart recorders are the industry standardforaccurate,reliable measurement and recording ofpressure,differentialpressure, and temperature in a wide varietyofapplications. Inaddition, DP models utilize rupture-proofbellowsDPU as theactuating unit — with features like overrangeprotectionandpulsation dampening (on some models).

The 242E is a 12-inch chart Temperature andPressureRecorder-Receiver designed for general pressureapplications.Whenfunctioning as a recorder-receiver, it uses abellows-typeelementfor pneumatic transmitter or controller input.

BARTON chart recorders are the industry standardforaccurate,reliable measurement and recording ofpressure,differentialpressure, and temperature in a wide varietyofapplications. Inaddition, DP models utilize Barton’srupture-proofbellows DPU asthe actuating unit — with features likeoverrangeprotection andpulsation dampening (on some models).

The J8A is a compact 8-inch chart temperatureandpressurerecorder designed for general pressureapplications.Available as asingle or dual pen unit, it can use anycombinationof pressuremeasuring helical elements or temperaturemeasuringthermalsystems.

BARTON indicators are available for a variety ofsafeworkingpressures and differential pressure ranges. They arewidelyusedfor the measurement of differential pressure, flowrate,andliquidlevel applications.

General Features
• Barton DPU Sensor
• NEMA-4/IP65 cases
• Wide Selection of DP Ranges (Including absolute,zero-center,andsplit ranges)
• Pulsation Dampening

BARTON DP switches are available in a wide variety ofsafeworkingpressures and differential pressure ranges. Widelyusedinapplications that require measurement ofdifferentialpressure,flowrate, and liquid level, they provideaccuracy, narrowdeadband,and repeatability of switch action at setpoint.

General Features
• SWP to 10,000PSI(689bar)
• Barton DPU Sensor/Actuator
• NEMA-4/IP65 and Explosionproof Cases
• Wide Selection of DP Ranges (including absolute,zero-center,andsplit ranges)
• Pulsation Dampening (selected models)

All BARTON Pneumatic Transmitters & Controllersaredesignedtomeet the most stringent and demanding requirements forOil &GasProduction, U.S. Navy Shipboard, and ProcessPlantapplications.

• Actuated by BARTON 199 DPU
• Rugged, Weatherproof, Non-corrosive Case
• Continuous Purging (pilot valve and nozzle exhaust inside)
• Operation Span Continuously Adjustable (100 - 20%)
• Adjustable Suppression (up to 80% of range)
• Large Valve Relays (no need for secondary booster)
• Span Continuously Adjustable (down to 20% of range)
• Air Consumption (at balance condition) 0.05 scfm ma

NuFlo developed its first flowmeter for oilfieldapplicationsin1957. The meter incorporated a tungsten-carbide shaftandbearingto withstand the rugged conditions of theoilfieldenvironment.Over the years, this flowmeter has built anunsurpassedreputationfor withstanding severe punishment whilemaintainingoperationaland measurement integrity.

NuFlo turbine flowmeters indicate flow rate andmeasuretotalthroughput of a liquid line. As liquid flows throughthe meterandover the rotor, the rotor turns at a speed thatisdirectlyproportional to the flow rate. A magnetic pickup sensestherotorblades as they pass and generates an electrical (sinewave)signal.These electrical pulses are then transmitted totheflowmeasurement readout equipment.

BARTON 7000 series turbines are designed for a broadrangeofprecise liquid measurement applications. Based on 35yearsofturbine manufacturing, this built-to-order series featuresarangeof sizes, materials, bearing systems and options

General Features
• Linearity — Better than ± 1% of reading over linear flowrangeoffractional size meters. Better than ± 0.25% of readingoverlinearflow range of meters 1’’ size and above.

• Repeatability — ± 0.02% of reading.

• Compact and efficient — Compared to othermeteringtechniques,Barton turbine meters are able to handle alargerflowrate in asmaller meter and with a lower pressure drop.With theuse ofreduced diameter block valves and meterruns,substantialinstalledcost savings are achieved.

• Self-flushing design — longer sustained accuracy.

• High frequency digital output — easy interfacewithdigitalequipment

• Wide rangeability — eliminates parallel runs and the costofextravalves and strainers.

• Symmetrical Bi-directional Design — Ideal forreverseflowapplications,accuracy and flow capacities are thesameineither direction. Electronic options provideinstantaneousflowdirection sensing.

• Wide Temperature & Pressure Ranges —measurementoptionsfor hot hydrocarbon to cryogenicapplications.

• High Quality Bearings — wear resistant tungstencarbidesleevebearings standard on 71xx/73xx metersandself-lubricating,precision stainless steel bearings (drylubricantimpregnated ballseparators on 72xx meters).

• Low mass design — The small lightweight rotor hubsbothensurefast response to process flow changes and reducedbearingload andwear. On meters above two inch (50 mm) the hub iseitherhollow orindented to further reduce the rotating mass.

• Low Maintenance — True fluid thrustdesignhydrodynamicallybalances the rotor during operation. Thisuniquedesign eliminatesthe need for mechanical thrust leveling.This lowfriction designboth improves metering linearity and reduceswearandmaintenance.

• Built-to-order series — features a range ofsizes,materials,bearing systems,and options.

BARTON 7400 Series Precision Turbine Meters are designedforgasservice in a wide range ofindustrial,commercial,pipeline,andaerospace applications. Becausethe output from thepickup coil isdigital, Barton 7000 Series metersare a perfectmatch forelectronic output devices — no A/D conversionrequired.The rotorresponse is in milliseconds, providing precisemetering inrapidlychanging flow pattern applications.

General Features
• High accuracy — custody transferqualitymeasurementswith ±0.2% of flowrate repeatability and asingleK-factorlinearity of better than ±1.0% of reading over flowrange.

• Wide application — metering of gases from oxygen toethylenefornaturalgas production, gas
transmission, petrochemical, transport, aerospace,andpetroleumproduction/refining industries.

• Responsive — a major advantage over other primaryflowdevices.Rotor response in milliseconds
provides precision even in rapidly changing environments.

• High frequency digital output — easy interfacewithdigitalequipment.

• Wide rangeability — depending on the flowinggasdensity,themeter inherently often provides for min to maxflowrange of morethan a 10:1 ratio. Rangeability is extended withtheaddition ofoptional linearizing electronics.

• Symmetrical bi-directional design — ideal forreverseflowapplications, accuracy and flow capacities are the sameineitherdirection. Electronic options provide instantaneousflowdirectionsensing.

• Wide temperature and pressure ranges —flexiblemeasurementoptions.

• Compact and efficient — compared to otherPrecisionmeteringtechniques, Barton turbine meters are able tohandle alargerflowrate in a smaller meter and at a lower pressuredrop.With theuse of reduced diameter block valves and meterruns,substantialinstallation cost savings are achieved.

• Low maintenance — sealed self-lubricating bearingsfeatureamaintenance free 10-year design life.

• Integral pressure tap — precisely positionedtoaccommodatepressure measurement at the turbine meter.

The MC-II Plus WP Flow Analyzer is a weatherproofinstrumentwhichprovides a continuous display of instantaneous flowrateandaccumulated total volume of liquid or gas based on aturbineflowmeter input signal. It combines ease-of-use andfunctionalityfor atruly user friendly flow analyzer.

The liquid crystal display simultaneouslydisplaysseven-digittotals and six-digit flow rates, as well as aselectionof commonlyused engineering units for rate and volume.Thecalibration isimplemented by entering the calibration factor oftheflow meterand selecting the desired units of measurement.Itautomaticallycalculates its own divisor. When used with agasturbine meter, youinput gas calculation parameters and theflowanalyzerself-calculates the calibration factor for gas instandardcubicfeet. The unique combination of inputs andoutputsallowsflexibility of use in the field. The MC-II Plus WPFlowAnalyzerconnects to a turbine meter using quick disconnects.Ittakes theturbine meter signal directly in, without the useofpreamplifiers.A remote reset input allows the volume to beclearedvia a remotecomputer. The user can select either a 4- 20 mAoutputor anamplified flow meter frequency output to feed toremoteequipment.

The MC-II Plus Portable Rate Meter is aportablereadoutinstrument which provides a continuous display offlow rateandtotal volume of liquids and gases. Since it uses thesameadvancedcircuitry of the rest of the MC-II Plus familyofinstruments, itshares many of the same features.

Being portable, it can be transported to multiplefieldlocationsto verify proper operation of turbine flow meters ofanysize. Whenconnected to a NUFLO Turbine Flowmeter, the MC-IIPlusRate Meterbecomes an accurate system for the display ofcurrentflow rate andtotal volume.

The HFC-RTU Frequency Converter is designedtoprovidetransmission of flow meter information from remotemountedturbineflow meters to readout equipment.

The Model HFC-RTU is specifically designed for aturbineflowmeter and mounts directly on top of the flow meter. Itreceivesitssignal from the magnetic pickup and transmits a 4 – 20mAanalogsignal representing the flow rate of the meter. Theanalogsignaltravels on the same pair of wires that powertheinstrument.Adjustment potentiometers are provided for theinputsignalsensitivity, zero setting, and span setting. Rangeselectionismade via plug-in capacitors making calibrationandfieldadjustments extremely simple. The Model HFC-RTU is DCpoweredfrom12 to 30 VDC, depending upon the loop load resistance(seeLoadResistance vs. Power Supply). As such, the HFC-RTU canbeuseddirectly with most field RTU’s and computerapplicationsprovidingfor noise immune transmission of turbine flowmeterinformation.

Turbine flow meters  provide remote readings;however,noisyenvironments can cause erroneous or false readings attheremoteterminals. The easily-installed NUFLO LowPowerPre-Amplifier helpssolve the problem of noise when shieldedsignalcables cannoteffectively eliminate them. Electrical noisecancause erroneousreadings when the noise level equals or exceedsthemeter outputsignal amplitude, which generally is very low(inmillivolts). Theremote reading unit might also record noiseassignal output whenthe flow meter is not transmitting.

The Low Power Pre-Amplifier raises the turbine flowmetersignallevel at the metering point to a relatively high levelsignal(6-8volts). Thus, the receiver can discriminate betweensignalandnoise and register only true signals at the remotelocation.Theflow meter transmits its low level signal through apairofconductors to a remote reading unit. Shielded signalcablescanhelp keep noise out of this system or reduce thenoiselevel.However, a high noise level or the length of thetransmissioncablecan make shielding ineffective. The preamplifierhelpseliminatenoise problems in these instances.

ScanPLC is a firmware-based enhancement to NuFlo'sScannerRTUs,enabling a customer to merge their processapplicationknowledgewith NuFlo's measurement and control expertise.UsingISaGRAF'ssoftware environment, our latest automationtooleffectively addsfull- function programmability to aScanner'sconfigurablesimplicity.

ScanPLC consists of a software based run-time module,embeddedina Scanner's program memory. The run-time module executesacustomerspecified program, resulting in limitless functionalityforaScanner's input and output channels. With this addeddiversity,aScanner can now be programmed for applications thatrange fromsteaminjection control to natural gas well de-wateringandproductionoptimization routines.

Our Application Workbench provides the integratorapowerful,intuitive, Windows™ based tool for developingcustomizedScannerprograms. With an understanding of any of five IEC61131compliantprogramming languages, a programmer can write,compile andload aprogram with our Application Workbench, thenseamlessly viewandconfigure the finished product with NuFlo'sScanWin™graphicalinterface. ScanPLC is simply the mostadvancedproductivity toolavailable!

C-Series Probe
The C-Seriesisokineticinlinesampling probe requires neither air nor hydraulicstocapturesamples. Rather, the probe is actuated by anelectricalpulse from acontroller, and uses existing pipelinepressure tofill the samplechamber with product. When the probe isactuated, asample chamberopens, allowing process fluid to flowthrough thechamber. As thewindow rotates, the sample is capturedin itsnatural state and fedby pipeline pressure to a receptacle.Byensuring that the processfluid is well-mixed and homogenouspriorto sampling, and using asampling process that collects thesampledirectly from the flowstream without changing the linearvelocityor direction of flow, thecustomer is assured of obtainingarepresentative sample.

Sample Probe Controller
The CDSeriesSampleProbe Controller controls the sampling frequency of CSeriessampleprobes. CD Series controllers are equipped with aninternal9- VDCmotor that rotates the sample probe 180° betweensample“grabs.”This design allows the C Series Sample Probe to takeasample witheach 180° rotation. While the controller canbepurchased without asample probe, it is useful only whenpairedwith a C-Series SampleProbe. The controllers are easilyattachedto the sample probe inthe pipeline and require no othermountinghardware. CD Seriescontrollers are available in fourdifferentconfigurations forcontrolling the sampling process withpulsecounts, timing, orpacing from a computer or PLC. Oneconfigurationcan be used totrigger an alarm to signal a loss ofpower, loss ofinput signal ormotor failure. The control cards inCD-20 A andCD-30 A controllerseach have four switches, which can beenabledto “read” flow interms of pulse counts or time (seconds).

The CD-20 B controller is most often used where PLCsorcomputersare used to pace the controller. This unit enablesonesample perpulse from a pre-scaled source. The CD-20 Balsoprovides anelectronic output signal to allow samples to becountedremotely orto verify motor rotation. The CD-20 SFA has theaddedfeature of adry contact for a controller failure alarm. Analarmis activated ifa sample command is not received within apresetperiod of time, themotor has not rotated within a presetperiod oftime, and/or poweris lost to the unit.

Installation Accessories
When apipelineisproperly fitted with a 2-in. ball valve and a U- 22unionadapter,the C Series Sample Probe can be safely installed inapipeline orremoved from a pipeline, even under pressure, withanA-3 sampleprobe retriever. A pressure equalizing valve (PEV)and/orLA-22line adapter may also be required in a C-Seriesprobeinstallation.

Many critical applications for sampling systemsrequireredundantor back-up verifications of quality orindependentanalysis of aseparate sample cylinder. True Cut™ LS-1(SF) systemsare designedto fill two or more cylinderssimultaneously. Everytime this unitis activated, each cylinderreceives one sample.These units areoften used in gasoline blendingfacilities, but arecapable ofoperating in any light hydrocarbon. Aswith mostsampling systems,these units are designed for“proportional toflow” sampling andprovide repeatable sample grabsizes as well ascomplete purgecycles.

The True Cut™ Model E-24 Batch Sample Controller isdesignedforproportional-to-flow, batch or time sampling. Theoperatorcanenter parameters via manual switches or downloadviaanRS-232/RS-485 Communication Loop. The controller provideslocalorremote display of flow rate, total flow (barrels, gallons,orcubicmeters), and total number of samples taken.

The unit's standard features include:
• Alarms
• Sample modes (flow, batch and time)
• Test mode
• Explosion-proof or weather-proof enclosures

C-Series Probe
The C-Seriesisokineticinlinesampling probe requires neither air nor hydraulicstocapturesamples. Rather, the probe is actuated by anelectricalpulse from acontroller, and uses existing pipelinepressure tofill the samplechamber with product. When the probe isactuated, asample chamberopens, allowing process fluid to flowthrough thechamber. As thewindow rotates, the sample is capturedin itsnatural state and fedby pipeline pressure to a receptacle.Byensuring that the processfluid is well-mixed and homogenouspriorto sampling, and using asampling process that collects thesampledirectly from the flowstream without changing the linearvelocityor direction of flow, thecustomer is assured of obtainingarepresentative sample.

Sample Probe Controller
The CDSeriesSampleProbe Controller controls the sampling frequency of CSeriessampleprobes. CD Series controllers are equipped with aninternal9- VDCmotor that rotates the sample probe 180° betweensample“grabs.”This design allows the C Series Sample Probe to takeasample witheach 180° rotation. While the controller canbepurchased without asample probe, it is useful only whenpairedwith a C-Series SampleProbe. The controllers are easilyattachedto the sample probe inthe pipeline and require no othermountinghardware. CD Seriescontrollers are available in fourdifferentconfigurations forcontrolling the sampling process withpulsecounts, timing, orpacing from a computer or PLC. Oneconfigurationcan be used totrigger an alarm to signal a loss ofpower, loss ofinput signal ormotor failure. The control cards inCD-20 A andCD-30 A controllerseach have four switches, which can beenabledto “read” flow interms of pulse counts or time (seconds).

The CD-20 B controller is most often used where PLCsorcomputersare used to pace the controller. This unit enablesonesample perpulse from a pre-scaled source. The CD-20 Balsoprovides anelectronic output signal to allow samples to becountedremotely orto verify motor rotation. The CD-20 SFA has theaddedfeature of adry contact for a controller failure alarm. Analarmis activated ifa sample command is not received within apresetperiod of time, themotor has not rotated within a presetperiod oftime, and/or poweris lost to the unit.

Installation Accessories
When apipelineisproperly fitted with a 2-in. ball valve and a U- 22unionadapter,the C Series Sample Probe can be safely installed inapipeline orremoved from a pipeline, even under pressure, withanA-3 sampleprobe retriever. A pressure equalizing valve (PEV)and/orLA-22line adapter may also be required in a C-Seriesprobeinstallation.

Circulation Systems
TrueCutCirculatingSystems allow operators to collect, store, and mixcrudeoil andother low-pressure sampled product in asinglereceptacle,minimizing the loss of light ends. Designed foruse witha True Cut“C” Series Sampler, a True Cut circulatingsystemconsists of astationary sample receptacle, anintegrated,skid-mounted gear pumpand a motorized circulating andmixingsystem. These systems arewell suited for supporting LACTunits,pipeline sampling,truckloading/discharge, refinerysampling,shiploading/discharge,and production platform sampling.Thesystems’ large-capacityreceptacles are ideal for longsamplingperiods. Two models theCMC-500 and the CMC-250 offer theoperator aselection ofreceptacle designs.

Circulation Systems
TrueCutCirculatingSystems allow operators to collect, store, and mixcrudeoil andother low-pressure sampled product in asinglereceptacle,minimizing the loss of light ends. Designed foruse witha True Cut“C” Series Sampler, a True Cut circulatingsystemconsists of astationary sample receptacle, anintegrated,skid-mounted gear pumpand a motorized circulating andmixingsystem. These systems arewell suited for supporting LACTunits,pipeline sampling,truckloading/discharge, refinerysampling,shiploading/discharge,and production platform sampling.Thesystems’ large-capacityreceptacles are ideal for longsamplingperiods. Two models theCMC-500 and the CMC-250 offer theoperator aselection ofreceptacle designs.

The NuFlo Single Chamber Orifice Fitting is designed foruseininstallations in which the line can be depressurized tochangeorinspect the orifice plate.

The NuFlo Single Chamber Orifice Fitting* is designed foruseininstallations in which the line can be depressurized tochangeorinspect the orifice plate. Economical and light-weight,theSingleChamber features a simplicity of design with a minimumnumberofparts. A quick and easy method for removing orificeplatesreducesshutdown time to a minimum. The interchangeability oftheorificeplates and retainers between the NuFlo Dual ChamberandSingleChamber Orifice Fittings also provides an economyininventoryrequirements. Single Chamber Orifice Fittingsareavailable inflangeweld, weldneck, and flanged types. AllNuFloSingle ChamberOrifice Fittings meet AGA/API Specifications.Twosets of 1/2’’N.P.T. flange taps are provided on all singleChamberOrificeFittings. They are available in 2’’, 3’’, and 4’’sizes forSweet,Sour, Nace, and Low Temperature Applications.

NuFlo Dual Chamber Orifice Fittings are compact,streamlinedandrugged featuring a simple and rapid method forchangingorinspecting orifice plates under pressure.

NuFlo Dual Chamber Orifice Fittings are compact,streamlinedandrugged featuring a simple and rapid method forchangingorinspecting orifice plates under pressure. Theorificefittingsfeature a ball type construction for opening andclosing"without"a complicated gear mechanism. The uniqueconstructionincorporatinga ball closure with spring-loaded,self-lubricating,Moly-filledTeflon® floating seals eliminates anyneed forperiodiclubrication. All NuFlo Orifice Fittings aremanufacturedinaccordance with ANSI, AGA/API and ASTM Standards andavailablein2", 3", 4" and 6" sizes.

The meter runs are fabricated by trainedmanufacturingpersonnelwith complete facilities for machining,welding, gaugingandinspection. This produces a product with qualityandmeteringaccuracy not possible with field-fabricated units.Allmeter runsare factory-aligned and welded with specialequipmentthatguarantees a straight, smooth meter run withoutdefects.Standardlengths meet AGA/API requirements.

Two basic styles of Orifice Plates are available:

Type 500 Universal for use in Orifice FittingsandRing-JointPlate Holders, and Type 520 Paddle Type for useinOrifice Flanges.Specific tolerances which apply to allNuFloOrifice Plates are asfollows:
• Edges — Square and sharp, will not reflect a beam oflightwhenviewed without magnification.

• Finish — 20 micro-inch roughness

• Flatness — Flat within 0.010 inches, per inch of damheight(damheight = pipe diameter minus orifice diameter, dividedby 2)

• Bore — Orifice bore tolerance in strict accordance withAGAGasMeasurement Committee Report latest edition, ASMEFluidMetersCommittee Report and Measurement Canada.

• Design — Normal stocked items are the standard designusedinall industries. Special designs are available on request.

• Sizes — Orifice Plates have been furnished in linesizesfrom1/2-inch to 36 inches. All standard line sizes, 2-inchto8-inchare available from stock. Larger plates up to 60 incheslinesizeavailable upon request.

• Optional — Vent or drain holes. Available at timeoforder.Gasket finished plates are also available at time of order.

The use of straightening vanes in meter runs serves atwofold
purpose:
• The turbulence often created in a complex pipingsystemisstraightened and smoothed to a normal flow pattern.

• The amount of straight pipe required preceding anorificeisreduced. NuFlo offers both flanged and pintypestraighteningvanes.
Vanes are available with carbon steel, 304 or 316stainlesssteeltubing welded together and securely attached into themeterrun.All tubes are parallel, with an internal chamfer on bothends,notless than 50% of wall thickness by 45 degrees, The tubesarereamedas thin as is practical at both ends and are constructedsoas tominimize the possibility of vibration.

Start Up Screens
NuFlo Start-up Cone Strainers are used as temporaryprotectionforcompressors, valves and other in-line equipment fromdebris,slag,etc. that is usually present in piping systemsduringconstructionand start-up

Spectacle Blinds
Also called Figure 8 Blanks, these blinds have one solid endandoneopen end connected by a web or tie bar. StandardconstructionisA516- G70 steel machined with a gasket spiral finishandmanufacturedto meet API 590. Also available in other flangetypes(RTJ & FlatFace), other materials (304SS, 316SS,410SS,Duplex, Hastelloy®,Monel & Chrome Moly) and other microfinishflange finishes.

Single Blinds and Ring Spacers
Standard construction is A516-G70 steel machined withagasketspiral finish and manufactured to meet API 590.Alsoavailable inother thicknesses, flange types, materials andflangefinishes.

Bleed Rings
Standard construction is 1-1/2’’ thick A516-G70 steelmachinedwitha gasket spiral finish and having one 1/2’’ or 3/4’’NPTdrilled andtapped bleed connection (1-1/2’’ thick). Alsoavailablein othersizes, connection types, thicknesses, pressureratings,flangetypes, materials and flange finishes.