Information Sheet Of Valve Accessories . - Samson-ag.ch
Information Sheet of Valve AccessoriesPositioners · Limit Switches · Solenoid Valves · Valve AccessoriesSelection and ApplicationEdition October 2016Information SheetT 8350 EN
OverviewThis Information Sheet contains information on transfer devices for pneumatic control valves and on devices for supplyingpneumatic control instruments with compressed air. It outlinesthe features and main technical data of these devices.The following groups of devices are described:Digital and analog positioners (see section 1)Positioners ensure a predetermined assignment of the valveposition to the control signal and supply a corresponding output signal pressure.Limit switches (see section 11)Limit switches consist of two inductive, electric or pneumaticcontacts. They issue a signal whenever an adjusted limit is exceeded or not reached.Solenoid valves (see section 3 on page 14)Solenoid valves convert binary signals issued by electric control equipment into binary pneumatic control signals.Accessories (see section 4 from page 15)–– Lock-up valve1 PositionersPrinciple of operationPositioners ensure a predetermined assignment of the valveposition (controlled variable x) to the input signal (referencevariable w). They compare the control signal issued by pneumatic or electric automation equipment (controller, control station, process control system) to the position or opening angleof the control valve and supply a corresponding output signalpressure (pst, output variable y). Positioners are often used asservo-booster as they convert low-energy signals into strongproportional signal pressures up to the maximum supply pressure (6 bar/90 psi). They can be used in standard and splitrange operation.Pneumatic and electropneumatic positionersDepending on the input signal, a distinction is made betweenpneumatic (p/p) and electropneumatic (i/p) positioners: Pneumatic (p/p) positioners:Pneumatic positioners accept an input signal of 0.2 to1 bar (3 to 15 psi) and issue an output signal pressure(pst) of maximum 6 bar (90 psi).–– Filter regulators Electropneumatic (i/p) positioners:Electropneumatic positioners use an analog DC signal of0/4 to 20 mA or 1 to 5 mA as the input variable and issue an output signal pressure (pst) up to 6 bar (90 psi).–– Service unitsDigital positioners–– Remote adjuster–– Supply pressure regulators–– Reversing amplifier–– Volume booster–– Quick exhaust valvesSAMSON digital positioners are single-acting or double-acting positioners for attachment to pneumatic linear or rotaryactuators.Due to their digital signal processing technology, these positioners have the following advantages over conventional positioners: Simple operation LCD with rotatable reading direction Automatic zero and span calibration during initialization(except for Type 3730-0) Automatic detection of faults in the actuator Direction of action independent of mounting position Continuous monitoring of zero point Low air consumption Permanent storage of all parameters in EEPROM (protected against power failure)2T 8350 EN
Digital positioners can be fitted with additional functions: Inductive limit switchesDigital positioners for on/off valves in safety-instrumentedsystems Solenoid valve Position transmitter External position sensor Analog input Binary input and output Forced venting Leakage sensorThe Types 3730-3, 3730-6 and 3731-3 Positioners also allowHART communication between the field and process controllevel. The Type 3730-4 Positioner allows the integration of thefinal control element into a PROFIBUS PA network, whileTypes 3730-5 and 3731-5 Positioners can communicate overa FOUNDATION fieldbus network.Positioners with a high air capacity and modular designThe Series 3793 extend the scope of functions provided bySeries 3730 Positioners. These positioners have a high air capacity and a modular design. Variable outputs (e.g. double-acting control) can be achieved by using exchangeablepneumatic modules that can be retrofitted. Optional additional functions, such as limit switches, position feedback or binary inputs and outputs, can be added to the positioner on siteas option modules.TROVIS SAFE digital positioners with single-acting or double-acting function are SIL-certified devices for attachment topneumatic control valves in safety-instrumented systems. Inaddition to the integrated valve diagnostics, they perform fullstroke tests (FST) and partial stroke tests (PST) and containready-configured parameters for on/off valves and HART communication. TROVIS SAFE 3730-6:Positioner same as Type 3730-6 with special use for control of on/off valves in safety-instrumented systems TROVIS SAFE 3731-3:Flameproof positioner same as Type 3731-3 with specialuse for control of on/off valves in safety-instrumented systems TROVIS SAFE 3793:Single or double-acting positioner, modular design, withhigh air capacity, with HART communication, for mounting onto on/off valves in safety-instrumented systemsAdditional features:–– Non-contact position sensing–– Plain-text display with NAMUR Recommendation NE 107states and messages on the device–– Simple one-knob, menu-driven operation–– Pressure sensors–– Integrated EXPERTplus valve diagnostics–– Simple attachment to all common linear and rotary actuators TROVIS 3793:Single or double-acting positioner with HART communicationT 8350 EN3
Table 1: Data and features of analog positionersTypeInput/output signal3730-03766376747634765i/pp/pi/pi/pp/pFor linear actuators according toIEC 60534-6-1Up to 200 mmUp to 120 mmUp to 120 mmUp to 90 mmUp to 90 mmFor Type 3277 (direct attachment) For linear actuators with rod-typeyoke For Type 3278 Rotary Actuator For rotary actuators according toVDI/VDE 3845 70 to 90 30 to 90 Opening angleExplosion protectionWithout Intrinsic safety Flameproof enclosure Non-sparking equipment Protected by enclosure/dustprotection Zone 2x Certification accordingto explosion protectionregulationsATEXIECExCSAFMEACJISSTCCKCS 1)üüüüüüReferencevariable0.2 to 1 bar(3 to 15 psi)4 to 20 mA 2) üüüüüüüüüüü· Can be converted to p/p or i/ppositionerLimit switchSolenoid valvePressure gaugeOperating controlsDetails in Data Sheet .1)2)üüüü·· ü–– DIP switches–– Potentiometer–– Volumerestrictionu T 8384-0 2)üü1 to 5 mAOptions 1) 0 to 20 mAAlso split-range 1) ·Compliance üüüüüüüü–– Adjustment–– Adjustmentscrews (span,screws (span,zero, P range)zero, P range)–– Volume restriction –– Volumerestrictionu T 8355u T 8355–– Adjustmentscrews (zero, Prange)–– Volumerestrictionu T 8359–– Adjustmentscrews (zero, Prange)–– Volumerestrictionu T 8359Flameproof enclosure in combination with Type 3770 Field BarrierFlameproof enclosure in combination with Type 6116 i/p Converter4T 8350 EN
3730-53730-63731-33731-5TROVIS 3793i/pi/pi/pi/pi/pUp to 300 mmUp to 300 mmUp to 200 mmUp to 200 mmUp to 300 mmFor linear actuators according toIEC 60534-6-1 For Type 3277 (direct attachment) For linear actuators with rod-type yoke For Type 3278 Rotary Actuator For rotary actuators according to VDI/VDE 384524 to 100 24 to 100 24 to 100 24 to 100 24 to 170 Without Intrinsic safety Non-sparking equipment 1) Input/output signalOpening angleExplosionprotectionFlameproof enclosure üüüüüüüüüüüüüüüüüüüProtected by enclosure/dustprotection Zone 2xATEXIECExCSACertification accordingto explosion CommunicationEXPERTplusEXPERTplusEXPERTplus EXPERTplusEXPERTplusDiagnostics 4 to 20 mAReferencevariable0 to 20 mA1 to 5 mA üüüüüüüüüüüü –– Display–– Rotarypushbutton–– Volume restriction–– Slider switch–– Key–– Display–– Rotarypushbutton–– Volume restriction–– Slider switch–– Keyu T 8384-5u T 8384-6 Also split-rangeüLimit switchOptionsSolenoid valveüüüPosition transmitterExt. position sensorAnalog inputüüüüüüüüüBinary inputBinary outputForced ventingLeakage sensor –– Display–– Rotarypushbuttonu T 8387-3 –– Display–– Rotarypushbuttonu T 8387-5 –– Plain-text display–– Rotarypushbutton–– Initialization keyu T 8493Configuration and operation using theTROVIS-VIEW softwareOperating controlsDetails in Data Sheet .T 8350 EN7
Table 3: Digital positioners for on/off valves in safety-instrumented systemsTROVIS SAFE3730-6Input/output signal3731-33793i/pi/pi/pUp to 300 mmUp to 200 mmUp to 300 mmFor Type 3277 (direct attachment) For linear actuators with rod-type yoke For Type 3278 Rotary Actuator For linear actuators according to IEC 60534-6For rotary actuators acc. to VDI/VDE 3845Opening angleExplosionprotection 24 to 100 24 to 100 24 to 170 Without Intrinsic safety Non-sparking equipment Flameproof enclosure Protected by enclosure/dustprotection Zone 2x üüüüüüüüüüüüüüCertification accordingto explosion protectionregulationsATEXIECExCSAFMEAC 1)JISNEPSIü PERTplusCommunicationDiagnosticsCertification according to IEC 61508/SILReferencevariable4 to 20 mAEXPERTplusSuitable for use in safety-instrumented systems up to SIL 2(single device/HFT 0) and SIL 3 (redundant configuration/HFT 1) according to IEC 61511. 0 to 20 mA1 to 5 mAAlso split-rangeOptionsLimit switchSolenoid valvePosition transmitterExternal position sensorüüüüüüüüüüüüüü Analog inputBinary inputüBinary outputForced ventingLeakage sensorConfiguration and operation using the TROVISVIEW softwareOperating controlsDetails in Data Sheet .1)üü –– Display–– Rotary pushbutton–– Volume restriction–– Slider switch–– Keyu T 8384-6S–– Display–– Rotary pushbuttonu T 8387-3–– Plain-text display–– Rotary pushbutton–– Initialization keyu T 8493SFlameproof enclosure in combination with Type 3770 Field Barrier8T 8350 EN
Digital positionersFig. 7: Type 3725 Electropneumatic PositionerFig. 11: TROVIS 3793 (top) Electropneumatic Positioner andTROVIS SAFE 3793 Electropneumatic PositionerExamples of attachmentFig. 8: Type 3730 Electropneumatic PositionerFig. 12: Type 3725 Electropneumatic PositionerNAMUR attachment on Type 3241 ValveFig. 9: TROVIS SAFE 3730-6 PositionerFig. 10: TROVIS SAFE 3731-3 PositionerFig. 13: Type 3730 Electropneumatic PositionerDirect attachment to Type 3277 ActuatorT 8350 EN9
Electronics from SAMSONTROVIS-VIEW Configuration and Operator Interface softwareEXPERTplus valve diagnostics for Series 3730 and 3731PositionersA uniform user interface that allows users to configure andparameterize various SAMSON devices using device-specificdatabase modules.Positioner firmware to detect potential valve faults and to provide maintenance recommendations.Data are transmitted either directly or indirectly using a memory pen or memory module. A direct connection enables bothonline and offline operation. This means that data can bechanged in the device immediately, or they can be saved onthe computer first and later downloaded to the device on site.The device-specific modules contain a database that providesthe characteristic properties of each device type, such as parameters, data points, user levels etc.The EXPERTplus valve diagnostics can detect faults and provide predictive, status-oriented maintenance recommendationsfor pneumatic control valves. The full scope of diagnostic functions is completely integrated into the positioner. EXPERTplus isintegrated into the TROVIS-VIEW software, allowing users toaccess, read and edit the diagnosis, and is easy to learn.EXPERTplus supports FDT/DTM and EDD.Refer to Data Sheets u T 8389 and u T 8389-1 for details.Refer to Data Sheet u T 6661 for details.Fig. 15: Partial stroke test (PST)Fig. 14: TROVIS-VIEW software10T 8350 EN
2 Limit switchesLimit switches are suitable for automation of on/off applications and issue an electric binary signal when the valve travelexceeds or falls below an adjusted limit. The signal can beused, for example, for switching control signals, issuing visualand audible alarms, or for connection to central control oralarm systems.31The installed limit contacts are either: Inductive5 Software-based2 Electric Pneumatic4The contacts, which can be overridden for the most part, canbe used either as normally open contacts or normally closedcontacts. Depending on the version, the limit switch can contain up to three limit contacts.The limit switches can be attached to linear or rotary actuatorsor directly to pneumatic or electropneumatic positioners depending on the control valve assembly. The limit switch islinked axially over the shaft in rotary actuators or linked usinga lever in linear actuators.1Solenoid valve2Supply pressure regulator3Control valve4Positioner5Limit switchAn optional solenoid valve allows the monitored actuator alsoto be controlled.Limit switches for on/off valves in safety-instrumentedsystemsFig. 16: Hook-up of a pneumatic actuator with positioner, limitswitch, and solenoid valveThe Type 3738 and Type 3776 Limit Switches can execute thesafety function by performing the safety-related end positionmonitoring and emergency venting. An optionally integratedsolenoid valve in Type 3776 can be used for emergency venting. In this case, the limit switch discharges its pneumatic output to the atmosphere when the solenoid valve is de-energized, causing the mounted actuator to be vented.The function is suitable for use in safety-instrumented systems.The Type 3738 and Type 3776 can be used up to SIL 2 (singledevice) and SIL 3 (redundant configuration) observing the requirements of IEC 61511 and the required hardware fault tolerance.T 8350 EN11
Table 4: Limit switches without solenoid valveType4746474447477.5 to 1807.5 to 1507.5 to 200Degree––0 to 100Inductive Electric Rated travelmmOpening angleLimit switchesExplosionprotectionPneumatic Without Intrinsic safety Flameproofenclosure Non-sparkingequipmentCertificationaccording toexplosionprotectionregulations ATEXIECExCSAFMEACKCSNEPSISTCC üüüüüüüSafety function (SIL)üüüüüü 1)Compliance···u T 8365u T 8367u T 4747Details in Data Sheet .1) üüü Applies to the proximity switches used in the inductive version as stated in manufacturer's declaration HE-1088Table 5: Limit switches with optional solenoid valveTypeRated travelmmOpening angleDegreeLimit switchesInductive37683738-203738-50377647407.5 to 1207.5 to 3007.5 to 3007.5 to 2000 to 150 to 900 to 30/1700 to 30/1700 to 100/180– ElectricPneumaticExplosionprotectionWithout Intrinsic safety üüüüüüüüüüüüüSafety function (SIL) 1) ü quipmentCertificationaccording CSNEPSISTCCAS-Interface modulewith bus connectionCommunicationDetails in Data Sheet .1)·u T 8356u T 8390u T 8390-5u T 3776u T 8357Applies to the proximity switches used in the inductive version as stated in manufacturer's declaration HE-108812T 8350 EN
Limit switchesExamples of attachmentFig. 17: Type 4746 Limit Switch · With pneumatic (left) andelectronic (right) limit contactsFig. 18: Type 4744 Limit SwitchFig. 23: Type 4747 Limit Switch,attachment to a NAMUR ribFig. 19: Type 4747 Limit SwitchFig. 20: Type 3738 Limit SwitchFig. 24: Type 3738-20 Electronic Limit Switch,attachment to Type 3241-1 Control ValveFig. 21: Type 3768 Limit SwitchFig. 25: Type 3776 Limit Switch forrotary actuators according to VDI/VDE 3845Fig. 22: Type 3776 Limit SwitchT 8350 EN13
3 Solenoid valvesSolenoid valves convert binary signals issued by electric control equipment into binary pneumatic control signals whichclose or open the control valve.The principle of operation is similar to an electropneumaticconverter unit (e/p converter) and a valve configuration corresponding with the valve's switching function. Intrinsically safe,low-power binary signals issued by automation equipment orfieldbus systems can be used for controlling purposes.3/2, 5/2, 5/3 or 6/2-way functions can be implemented depending on the solenoid valve version used. Different flowrates and connection types allow the solenoid valve to be tailor-made for the various tasks.Fig. 26: Type 3701 Solenoid ValveFig. 27: Type 3963 5/2-way Solenoid ValveFig. 28: Type 3967 Solenoid Valve withNAMUR interfaceFig. 29: Type 3966 Solenoid ValveFig. 30: Type 3962 Solenoid Valve,Ex d (Ex em)Table 6: Data and features of solenoid valvesType37013963396739623/2 · 5/23/2 · 5/2 · 5/3 · 6/23/23/2 · 5/2 · 5/3 · 6/23/2 Ex d/Ex em pilot valve3966 Switching functionFor linear actuators accordingto IEC 60534-6-1For Type 3277 (directattachment) For linear actuators with rodtype yoke For rotary actuators accordingto VDI/VDE 3845 24/115/23024/115/2306/12/24/120120/2401.4 to 6 bar1.4 to 6 bar1.4 to 10 bar1.4 to 10 bar1.4 to 6 bar Nominal signalV DCV ACSupply airExplosionprotectionCertification according toexplosionprotectionregulationsIntrinsic safety Encapsulation üüATEXIECExCSAFMEACNEPSIüüüüüüüüüSafety function (SIL) ComplianceDetails in Data Sheet .1) Flameproof enclosureüü üü 1)üüüüüü ·····u T 3701u T 3963u T 3967u T 3962u T 3966Planned14T 8350 EN
4 Accessories4.1Type 3709 Pneumatic Lock-Up ValvePneumatic lock-up valves shut off the signal pressure line either when the air supply falls below an adjusted value orupon complete air supply failure. As a result, the pressure inthe actuator is blocked. The actuator remains in its last position until the defect is eliminated.Fig. 31: Type 3709-1 Pneumatic Lock-up ValveFig. 32: Type 3709-4 Pneumatic Lock-up ValveFig. 33: Type 3709-5 Pneumatic Lock-up ValveFig. 34: Type 3709-6 Pneumatic Lock-up ValveTable 7: Data and features of lock-up valvesType 3709Supply air in barMax.Signal pressure in barKVS coefficientMax.Approx.Set point range in bar(continuously adjustable)Permissible ambient temperature 2.04.30.5 to 60.5 to 61.5 to 61.5 to 61.5 to 61.5 to 61.5 to 6 –25 to 80 C–40 to 80 CComplianceDirect attachment to positioner For linear and rotary actuators For installation in the signal pressure line inany position as required Input hooked-up as required Mounting on single-acting rotary actuatorsaccording to VDI/VDE 3845Sandwich styleWith boosterConnecting thread GConnecting NPT threadInlet/outlet cross-section for connectionwithout threadData sheetG¼G¼G½G¼G½––¼ NPT¼ NPT½ NPT¼ NPT½ NPT–––––––¼”½”u T 8391T 8350 EN15
4.2Type 3759 Pneumatic Remote Adjuster4.3The remote adjuster is a precision pressure regulator whichcan be manually adjusted. It is designed for use in pneumaticcontrol loops as either a set point adjuster or manual remoteadjuster and can be used as an adjustable precision pressureregulator for measuring, calibration and testing equipment.VersionsThe Type 3759 Pneumatic Remote Adjuster (Fig. 35) is designed for the following pressure ranges: 0 to 0.6 bar0 to 1.6 bar0 to 4.0 bar0 to 6.0 barSupply pressure regulators provide pneumatic control instruments with a constant air supply. The supply pressure regulator reduces and controls the pressure of a compressed air network to the pressure adjusted at the set point adjuster.Versions are available for installation in pipelines or controlpanels or for direct attachment to positioners or pneumatic actuators.The air pressure reducing station consists of a supply pressureregulator and an upstream filter with condensate drain.Technical dataThe maximum supply pressure for all versions is 7 bar.Technical dataOutput pressurebar 0 to 0.6 0 to 1.60 to 40 to 6Req. supply pressurebar 1.4 to 75 to 772 to 7Flow rate in ln/h(max. air outputcapacity) at upstreampressure (bar)220005400075300Air consumption inln/h in steady state atupstream pressure(bar)27051107130Data SheetType 4708 Supply Pressure Regulatoru T 8510Type4708-xxSet point range0.5 to 6 bar (8 to 90 psi) or0.2 to 1.6 bar (3 to 24 psi)Operating pressure p1Max. 12 bar (174 psi)VersionAluminum or stainless steel bodyAmbient temperaturerangeDepending on version: –25 to 80 C(standard), –50 to 80 C (low-temperature version)Air filtering15 to 20 µm mesh size (5 µm as specialversion)OptionsPressure gauge, manual/automaticswitchover for positionersData sheetu T 8546Version for increased air capacity: Type 4708-45 (Fig. 37)Fig. 36: Type 4708-53 (left) and Type 4708-12 (right) SupplyPressure RegulatorFig. 35: Type 3759 Pneumatic Remote Adjuster16Fig. 37: Type 4708-45 Supply Pressure Regulator for increased aircapacityT 8350 EN
4.4Type 3999-0096 Filter RegulatorThe filter regulator is used to supply compressed air to pneumatic volume boosters for large actuators. It cleans the compressed air, removing any dirt particles, water, and oil. In addition, it regulates the air pressure to a constant output pressure.Technical dataType3999-0096Set point rangeAdjustable between 0.5 and 10 bar (8 and145 psi)Operatingpressure p1Max. 16 bar (230 psi)VersionWith mounting bracketFilter unitFilter, supply pressure regulator and pressuregaugeCondensatedrainManually over drain valveData sheetu T 3999-8Fig. 38: Type 3999-0096 Filter Regulator4.5Type 3999-009x Service Unit for purifying and controlling compressed airThe service unit is used to supply compressed air to pneumatictransmitters, controllers, and positioners. It cleans the compressed air, removing any dirt particles, water, and oil. In addition, it regulates the air pressure to a constant output pressure.Technical dataType3999-009XSet point rangeAdjustable between 0.5 and 10 bar (8 and145 psi)Operatingpressure p1Max. 16 bar (230 psi)VersionPipe or wall mountingFilter unitCoarse filter, submicro filter, pressure regulatorwith secondary venting, pressure gaugeCondensatedrainAutomatic over float valve or solenoid valveOptionsPressure switches or differential pressureswitches, solenoid valvesData sheetu T 3999-6Fig. 39: Type 3999-009x Service UnitT 8350 EN17
4.6Type 3710 Reversing AmplifierThe reversing amplifier allows double-acting pneumatic actuators to be operated using single-acting pneumatic/electropneumatic positioners or limit switches.The positioner creates an output signal pressure Y1, to whichthe air pressure Y2 is added.The reversing amplifier uses the supply pressure Z as auxiliarypower. The following rule applies:Y1 Y2 ZTechnical data4.7Type 3755 Pneumatic Volume BoosterThe booster is used together with positioners to increase thepositioning speed of pneumatic actuators. It supplies the actuator with an air flow output whose pressure corresponds exactly to the signal pressure, except that it has a much highervolume output.Versions Type 3755-1: standard version with a sintered polyethylene filter disk for low-noise venting Type 3755-2: version with Flanged-on threaded exhaustport connected to a pipeType3710Supply pressureMax. 6 bar (90 psi)Connecting threadG ¼ or ¼-18 NPTAmbienttemperature range–25 to 80 CTypeLow temperature version: –50 to 80 C and–60 to 80 CSupply pressureMax. 10 bar (145 psi)Signal and actuatorpressureMax. 7 bar (101.5 psi)Degree ofprotectionOptionsData sheet Version with stainless steel housing (pending)Technical dataIP 653755-1Pressure ratioPressure gauge for Y1 and Y2 ora pressure gauge for Y2 in combination withType 4708-54 Supply Pressure RegulatorFlow coefficient KVSSignal:output 1:1Exhaust and supply: 2.5 m³/hAmbient temperaturerangeu T 8392–40 to 80 C–55 to 60 C 1)ConnectionsDegree of protectionG or NPT threadIP 44Data sheet1)3755-2IP 66u T 8393Optional low-temperature versionType 3755-1, low-noise venting over asintered polyethylene filter disk:Type 3755-2, flanged-onthreaded exhaust port:Fig. 40: Type 3710 Reversing Amplifier with two pressure gauges18Fig. 41: Type 3755 Pneumatic Volume BoosterT 8350 EN
4.8Type 3711 Quick Exhaust ValveThe Type 3711 Quick Exhaust Valve is mounted between thepositioner or solenoid valve and the actuator. It is used to ventthe actuator more quickly.The Type 3711 Quick Exhaust Valve functions in the samemanner as a 3/2-way valve with an exhaust port. To vent theactuator more quickly, the quick exhaust valve must be mounted as close to the pneumatic actuator as possible.Versions Type 3711-0: quick exhaust valve with aluminum bodyand adjustable restriction Type 3711-1: quick exhaust valve with stainless steel bodyand adjustable restriction (pending)Technical dataType3711Operating pressure0 to 7 barDifferential pressure55 % of control pressureExhaust KVS10 m³/hAmbient temperaturerange–40 to 80 CHousing materialAluminum (stainless steel pending)Restriction materialStainless steelSealsVMQData sheetu T 8547Fig. 42: Type 3711 Quick Exhaust ValveT 8350 EN19
SAMSON AG · MESS- UND REGELTECHNIKWeismüllerstraße 3 · 60314 Frankfurt am Main, GermanyPhone: 49 69 4009-0 · Fax: 49 69 4009-1507samson@samson.de · www.samson.deT 8350 EN2017-10-19 · EnglishSpecifications subject to change without notice
servo-booster as they convert low-energy signals into strong . SAMSON digital positioners are single-acting or double-act- . angle 24 to 100 24 to 100 24 to 100 24 to 100 24 to 100 24 to 100 24 to 100 24 to 100 24 to 100 24 to 170 Opening angle Explosion protection
the flow rate and pressure. To select the correct valve to fulfill these functions properly, an outline of the different types of valves and their features is given below. Butterfly valve Butterfly valve and globe valve Butterfly valve and ball valve Butterfly valve and gate valve Check valve Gate valve Globe valve Ball valve Valve shaped like a
G- Autoflow Valve 2.0 GPM H- Autoflow Valve 2.5 GPM I- Autoflow Valve 2.8 GPM J- Autoflow Valve 3.0 GPM K- Autoflow Valve 3.3 GPM L- Autoflow Valve 3.5 GPM M- Autoflow Valve 4.0 GPM N- Autoflow Valve 4.5 GPM O- Autoflow Valve 5.0 GPM P- Autoflow Valve 5.5 GPM Q- Autoflow Valve 6.0 GPM R- Autoflow Valve
4, 5 port pilot operated valve 4TB 5 port pilot operated valve (pneumatic valve) 4L2-4/LMFO 3, 4, 5 port pilot operated valve (pneumatic valve) 4KA/4KB 5 port pilot operated valve (pneumatic valve) 4F 5 port pilot operated valve (ISO conformed valve) PV5G/PV5/CMF 3 port direct acting valve (small pneumatic valve) 3MA0/3MB0
Generic two-way valve Straight globe valve Gate valve Generic two-way angle valve Angle globe valve Safety angle valve Generic three-way valve Three-way globe valve Arrow indicates failure or unactuated flow path a. b. Generic four-way valve Four-way four-ported plug or ball valve Arro
A- Balancing Valve B- Circuit Setter C- Autoflow Valve 0.5 GPM D- Autoflow Valve 1.0 GPM E- Autoflow Valve 1.3 GPM F- Autoflow Valve 1.5 GPM G- Autoflow Valve 2.0 GPM H- Autoflow Valve 2.5 GPM I- Autoflow Valve 2.8 GPM J- Autoflow Valve 3.0 GPM K- Autoflow Valve 3.3 GPM L-
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valves, rotary valves, control valve end connections and valve body bonnets Employ control valve packing, characterize cage-guided valve bodies and identify valve plug guiding, restricted-capacity control valve trim and actuators Identify control valve accessories and carryout control valve sizing Recognize special control valves .
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