Answer / vaibhav v t

Control valve is the final control element used in process
application for regulating/controlling the desired process
parameter like temp., flow, level,pressure,etc.
Control valve are of many types like globe,
ball ,butterfly, plug and they are selected and used as per
process application.

Answer / mohammad unaiz

control valve is the final control elements used in control process for pressure, temper assure,flow,level etc.
control valve are many of types like that globe,ball,butterfly,they are used as per application.

Answer / ponnamalla venkata satish

control valve is called as final control element,it is to
get reliabale process by controlling the temp,pressure and
level etc basically control valves are three types
1) sliding stem valves: in this category most commonly used
valves are globe valve, angel valve etc
2) roatary valves : in this mostly used valves are ball and
butterfly valves
3)eccentric valves : in this again we can find two types
i) eccentric disc control valves
ii) eccentric plug control valve

and u can get more information (video class) in youtube,
please type lesson 39 control valve in search hope u will
be satisfied

Answer / sam.r

control valve is a final controlling element, to implement
the manipulated variable to regulate the controlled variable
in the process.

there are two types in control valves they are
1)Inherent characteristics
a)quick opening
b)linear
c)equal percentage
in this the the pressure difference is determined by the
valve alone
2)Effective characteristics.
in this type the control valve posses the characteristics
when installed in the field.

Answer / madhu

control valve is to regulate the flow rate of fluids
through pipes in the system.and this final control element
also.

Answer / hiren

Control valve is the final control element through which fluid passes which adjust the size of the flow passege as directed by signal from controller to change the rate of flow of the fluid. There are twoTypes of control valve air to open and air to close

is there any digitel grevity meter availaible in the market by which we can measure specific gravity of a battery?

0 Answers  

Please explain the difference between instrument range and calibration range in terms of pressure transmitter? line design pressure: 93 bar operating pressure : 82 bar press Transmitter Range? calibration range ?

3 Answers   L&T,

How to zero trim the level transmitter by using foundation fieldbus communicator.

2 Answers   Emerson,

How to calibrate level switch?

2 Answers   Power Plant, Sabic,

why we use by pas on a positioner? When can a by pass be not used on a positioner ?

2 Answers  

Which topics are covered in Process Control?

0 Answers   Honeywell, L&T,

How to do ma trim in massflow meter?

2 Answers   Pakistan Steel,

Sir, my yokugava FF TYPE LEVEL transmitter us bad, i don't have spares available, i want to replace it with a Rosemount FF transmitter, please tell me what procedure to be followed and what changes to be done in dcs part.

1 Answers   BPCL Bharat Petroleum, OEG,

hi friends,im an instrumentation and contol engg student,can u hlp me of suggsting barc written question paper,my id is roysuvaranjan@gmail.com, cel no.9563591747

0 Answers   BARC,

how to convert bar to mA?

1 Answers  

what is the difference between Feedback controller and Feed forward controller. and when it is to be used.

3 Answers  

hii my name is sujith...i am preparing for HPVL GET 2010... so ,,,pls help me by send any previous questions or material to my site.....(Msujith_12@in.com) thank q

0 Answers