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Advanced China Factory Made Qt Actuators1
Valve Parts, Qt Actuators, Butterfly Valves Actuators
Avannto Flow Controls Co., Ltd.
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Product Description Design Features QT series electric actua tors are designed & eng ineered for robust, reliable and for high performance d uty onto quarter turn valves. Th e unique reliable motor m odule, adjustable cam plate lim i t s witch, self locking mechanism, precision g earing system and ball bearings, the auto declutching m echanism, light force lo ad on the hand-wheel, the adapt or drive bushing and bo t tom ISO 5211 mounting dimensi on, are advantages aga instothers in the field of va lve automation. CE appr ovedSELF LOCKING MECHANISMBecause of the worm gear design system, all the electric actuators are self locking.HEATERFor prevention of condensation due to weather & temperature changes, and also keeps internal components clean & dry, a 20 watt space heater is provided inside all the electric actuators. ENCLOSUREStandard enclosure to water jet pr oof & water tight proof IP 67 and EXCT4(on request) HANDWHEELCorrect size of hand-wheel on the electricactuator ensure adequate strength for safe and efficient emergency operation. MOTORSquirrel cage motor is of encapsulated type, on high stall torque and low inherent force for seating &unseating of valves. All motors are integrated with build-in thermal protection. MANUAL OVER-RIDEEngage by pulling the lever & turning the hand- wheel. Lever is auto declutch vvhen power supply is switched on, and hand-wheel does not turn as extra safety feature. TERMINAL CONNECTION & WIRINGTerminal connections are of "WAGO" push on type, making wiring connection very easy & without fuss. Elect rical wiring circuit isstandardized for single & three phasevoltage. Addition termination is available on request. INTERNAL COMPONENTS ARRANGEMENTInternal mechanical and electrical components are designed in modular mounting arrangement, and can be easily removed for maintenance purposes. Additionoptional accessories are also possible. LIMIT SWITCHESA pair of limit switches are activated by means of simple, reliable & adjustable cam plates, mounteddirectly onto, and driven by center column. The unique cam plate design does not allow over travel of limitswitches. (Only on basic type) TORQUE SVVITCHESELectric actuators on 100 Nm and above areinstalled with torque switches for over-load protection (only basic type) Electronic Remote ControlsInternal drive to reverse the actuator rotation direction via remote control signals with internal 24 V DC or external 24 V DC/AC up to 120 V DC/AC power supply. As default, remote controls are configured as "3-wires" (1 signal to open and 1 signal to close); remote controls can be configured as "2-wires" (signal present to open, signal absent to close). VISIUAL POSITION INDICATORThe visual position indicator is directly mounted onto the center drive column to provide the visual position of the valve. POTENTIOMETER - optionalIs available on request, is to provide & transmit remote indication of valve position. MOUNTING & ADAPTATIONBottom flange mounting dimension conform to ISO 5211. A adaptor drive bushing is provided for every electric actuator, is removable and formachining to suite valve stem size. General ApplicationsThe QT model is available in five sizes and is designed for on/off or modulating control of butterfly, ball, rotary plug valves or dampers in a wide range of heavy industrial, chemical and petrochemical plants on and offshore. Technical DataFeaturesLow or high voltage single phase DC or AC power supply with 3-phase optionMultiple adjustable stroking times to suit specific applicationsInterchangeable base plate and range of shaft inserts enable simple connection to any valve typeIntelligent control unit prevents overheatingEpicyclical gearing ensures reliable and smooth operationTop-mounted position indicator Power supply:Voltage fluctuations: Frequency:Torque output:Single phase from 24 to 48 V DC or AC at 50/60 Hz Single phase from 100 to240 V DC or AC at 50/60 Hz3-phase from 208 - 240 V AC, 380 - 480 V AC and500 - 575 V AC+/-10%+/- 5%From 60 Nm to 2500 Nm Constantly-engaged, hand wheel-operated manual override in case of power failureNon-intrusive configuration, operation and diagno stics (only on intellgence model)Local control panel for manual valve operation with additionalLCD sreen indicators (Not available on basic model)Simple upgrade options for modulating control and network Ambient temperature Standard range:Low temp range: Conduit entry:-25 °C to +70 °C /-13 °F to 158 °F-40 °C to +70 °C /-40 °F to 158 °F NPT 3/4 x 2 ApprovalsWaterproof:Explosionproof:IP 67EX DII CT4 (EX model)Optional Modules and PerformanceOptional modules Starter Module (Code: E)Available for the pulse passive dry contact point for on / off from DCSAnalog position OUTPUT 4-20 mA or 0-10 V DC 4 additional SPST output contactsAdditional LCD screen and two magnetic knobs for on/off and locol/stop/remote switch as locol interfaceElectronic limit swtich and torque switchModalating Module (Code: EZ)Analog position INPUT 4-20 mA or 0-10 V DC Analog position OUTPUT 4-20 mA or 0-10 V DC 4 additional SPST output contactsAdditional LCD screen and two magnetic knobs for on/off and locol/stop/remote switch as locol interfaceElectronic limit swtich and torque switchExplosion-proof Model(Code: B)Have EX.DII CT4 explosion-proof levelIntelligence Module (Code: I)Available both for the pulse passive dry contact signal and 4-20 mA modlating signal from DCSAnalog position OUTPUT 4-20 mA or 0-10 V DC 4 additional SPST output contactsAdditional LCD screen and two magnetic knobs for on/off and locol/stop/remote switch as locol interfaceNon-intrusive configuration, operation Electronic limit swtich and torque switchOutput Drive DimensionsThe QT series is designed for mounting to either an ISO5211 flange or a Keystone flange. Depending on what valveflange scheme is in play, the black mounting plate and drive insert at the bottom of the actuator can be easily swapped out for this purpose.Nearly every ISO and Keystone mounting size available on the actuator comes with dual-drilled bolt circles. Besides allowing the actuator to cover a wider range of valve sizes, this feature can potentially prevent the need to installan adaption bracket between the valve flange and the actuator flange.
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