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What are the three basic parts of a Control Valve?

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Question added by Waqar Ahmed , Instrument Technician , ADNOC Gas Processing
Date Posted: 2015/05/28
Yousef Al-Yousef CMRP,  CRL
by Yousef Al-Yousef CMRP, CRL , Instrument Shop Foreman/WAC , SADARA Chemicals Company

Actuator

Bonnet

valve body

abdul shafiq
by abdul shafiq , hydraulic barrier supervisor , baharia town karachi

val body

spool/piston

handle

Kafeel Thaneem
by Kafeel Thaneem , Service engineer , petrotec

Actuator, Stem coupling, Valve body

Shahabas Abdul Azeez
by Shahabas Abdul Azeez , Instrumentation Engineer , Suntech Energy Solutions

1) Valve actuator - which moves the valve's modulating element, such as ball or butterfly.

2) Valve positioner - Which ensures the valve has reached the desired degree of opening. This overcomes the problems of friction and wear.

3) Valve body - in which the modulating element, a plug, globe, ball or butterfly, is contained.

Nizam uddin phulpoto Nizam uddin
by Nizam uddin phulpoto Nizam uddin , Senior Executive, Instrument Ammonia/Urea/Boiler , Fauji Fertilizer Company Ltd.

1.ACTUATOR

2.BONET

3.BODY.

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