Answer / mohammad reyaz ansari

Globe valve, Butterfly valve, Gate valve, Diaphergm valve,
Ball valve, Knife Edge valve, Angle valve, Three way valve,
Twoway valve.

Answer / samir

There are two types to define the control valve types:

(1)As per action
(2)As per design

1. As per Action : (a)Air to open (b)Air to close
2. As per design : Globe valve,Gate valve,Ball
valve,Diaphragm valve,Butterfly valve,Knife edge valve ect.

Answer / ns

The question can be mean different way.
One answer is as follows. depend upon the valve actuator
can be consider two types. AIR FAIL TO CLOSE and AIR FAIL
TO OPEN.

Answer / sudheer

AFO is Air Fail Open,AFC is Air Fail Close,What is "AFS"?I
heard Air Fail Static.If the valve static position in air
fail condition how it is possible,Can you please explain.If
the valve not acting as AFS how to troubleshoot?

Answer / suhel

As per action 
As per design




1. As per Action : (a)Air to open (b)Air to close
2. As per design : Globe valve,Gate valve,Ball 
valve,Diaphragm valve,Butterfly valve,Knife edge valve ect. 

Answer / faheem haider

Two types
1. Linear
2. Rotary

Answer / dhirendra kumar singh

pneumatic control valve,motarise control valve,hydraulic
control valve,globe control valve,butterfly control
valve,flow control valve,automatic control valve,stainless
steel control valve

Answer / muhammad sanaullah

sanders patent valve , Butterfly valve , Three way valve , Two way valve , Angle body valve , Needle valve , V-port valve , Double seated valve .

Answer / s93381

flow control valve
Temp control valve
level control valve

Answer / anand.k

servomotor control valve,mass flow control valve,modulating
control valve,

what is the different between plc and dcs ? I know full name of this two but I want to know what structure and working style and speed I/O capacity and controller difference?

2 Answers   L&T,

What is difference between magnetic flow transmitter & Electromagnetic flow transmitter?

1 Answers  

How to work & calculated output of the Derivative action in pid controller (Explain Derivative controller)

0 Answers  

What is the difference bitween control net scaner and device net scaner

0 Answers   Binani,

How will u convert the mmh2o in mass or Volumetic flow rate in DP Flow Transmitter. Give me the Brief explain using the formula

1 Answers   Walchandnagar Industries,

if we mount flow tube in arrow direction then flow comes in negative & if we mount it another direction then flow comes positive,So what will be the problem

2 Answers  

how to calibrate electro pneumatic positioner 8013 mil controls ltd ?gsr

0 Answers  

How can I zero check of wet leg type DP Tx ?

6 Answers   ONGC,

Draw a simple circuit for a well head control panel used to protect the well against fire, leak, blockage, ESD, & controls the operation of one downhole & one surface safety valve. Explain the operation and controls

0 Answers  

what is the difference in Kg/cm2 and mmwc?

2 Answers   Niko,

Can 2 transmitters be connected to Integral orifice meter taps? Does an integral orifice comes with 2 set of taps?

1 Answers  

What is rang ability?

0 Answers