Valve Positioner Market Share, Trends, Analysis by Application to 2016-2021
Global Valve Positioner market
is segmented on the basis of product type, application, and region. Valve
positioners are basically used to upsurge or lessen the air control pressure
that drives the actuator of the control valves until the valves stem reaches a
position balanced to the output signal from the process variable instrument
controller.
The positioners are mainly installed
on the side-yoke or upper top casing of the pneumatic actuator for
linear-sliding-stem control valves and at or near the end-of-shaft for rotary
control valves. In either cases, the valve positioner is associated
mechanically to the valve stem or valve shaft so that their position can be
compared with the position dictated by the controller. Mechanical feedback then
links back to the positioner to confirm that the process controller tells the
positioner to modify position, also the feedback linkage addresses the
positioner to confirm that a change in the valve position stem has occurred to
give a sense of magnitude of the change in position. Positioners should be
installed if the valve is intended for use in a control application.
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Faster speed of response,
pressure control across valves, split-ranging capabilities, and maintenance
ability are the factors that lift growth of valve positioner market. Positioners
are expected to calculate internally the correction for the detected stem
position of valves, each of which has different full-open and full-close
positions. Additionally, long-term reliability and sturdiness in several
environmental cases ranging from cold to extremely hot (desert) climates are
required.
The Valve Positioner market is
classified, by type into Pneumatic Positioner, Electro-Pneumatic Positioner,
Electric Valve Positioners, Digital or Smart Devices. Pneumatic positioners receive
pneumatic signals (usually 3-15 psig). The positioner then supplies the valve
actuator with the correct air pressure to move the valve to the required
position. Pneumatic positioners are basically safe and can provide a large
amount of force to close a valve.
Electric valve positioners
normally receive electric signals and perform the similar functions as in the
case of pneumatic positioners, but they use electricity instead of air pressure
as an input signal. Single-phase, three-phase alternating current (AC) and
direct current (DC) voltage are the three types of electric actuation in the
global valve positioner market. Electro-pneumatic valve positioners transform
current control signals to equivalent pneumatic signals and use a combination
of air and electricity.
Digital or “smart” positioning
devices use a microprocessor to position the valve actuator while monitoring
and recording data. They function very similarly to an analog-type positioner,
except the electronic signal conversion is digital rather than analog. Smart
positioners are very accurate, use less air than analog positioners, and allow
for online digital diagnostics.
The valve positioner market is
classified, by application into Aerospace and Defense, Automobile, Marine, Oil
& Gas, Mining, Water Treatment, Chemical and Petrochemical Industry,
Thermal Power Generation, Solar Power Generation.
At oil and chemical plants, as
well as steel, pulp, food, and pharmaceutical plants and other industrial
facilities, valves are installed on pipes in order to control the flow rate of
gases or liquids. Hundreds of valves are used at a small facility and thousands
are necessary at a large facility. The valve positioner market is segmented,
geographically into North America, Europe (Eastern Europe, Western Europe),
Asia Pacific, Latin America, Middle East and Africa.
The key players in the valve
positioner market are, Robert Bosch GmbH, Hilti Corporation, Stanley Black
& Decker, Inc, Makita Corporation, Actuant Corporation, Techtronic
Industries, Danaher Corporation, Hitachi Koki Ltd., SKF, Emerson Electric Co.,
Mindman, and Siemens.
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