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8/6/2019 Valve Actuator Eng
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An Introduction
Copyright, 2010 Rotork Controls, Indonesia Office
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Valvey Ball Valvey GateValvey DoubleBlock and Bleed Valvey GlobeValvey ButterflyValve
Type of valve:
From stem/shaft movement :
Quarter Turn (Ball Valve, Butterfly Valve)
Multi turn (Gate Valve, DBB Valve)
Sliding (Globe Valve)
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Ball Valve
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Gate Valve
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Double Block And Bleed Valve
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Globe Valve
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Butterfly Valve
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Why we need actuator?
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Why we need actuator?
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Why we need actuator?
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Why we need actuator?
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Why we need actuator?
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Actuator
Valve
Directional
Control
Unit
Actuator
Motor/
Piston
Open
Close
Power Supply
Control Signal
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Actuator Multi turn - rising stem (Gate Valve, DBB):
Quarter turn (Ball Valve, Butterfly Valve) :
IQ Range A Range IB Gearbox
Combined with
Bevel Gear iftorque is high
AQ Range
For small valveIW Gearbox
For big valve:
IQ Range +
IW (worm) Gearbox
IQT Range
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Sliding stem (Globe Valve) :
used for modulating control valve (flow, pressure)
Solid state starter, Up to 1200 starts per hour
Analog input signal by Folomatic Reliability in feedback
Can be used to replaceelectro hydraulic actuator
IQM (Modulating) Range
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Perkembangan Sistem Kontrol
Actuator1. MCC/ Contactor Starter - Separate
In actuator only has Torque/Limit Switch and Motor
MCC (Motor Control Centre) in control room or power house
3 Phase
Power
MCC
Reversing
Contacter
Starter
Local Control
PLC /Control Panel
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2. Actuator with Integral Contactor Starter
3 Phase
Power
PLC /
Control Panel
Actuator with Integral Contactor Starter and Local Pushbutton
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3. Two wire control PakScan
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Modbus/Profibus/FF