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,

how to test rotor &stator earth fault in turbine

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Specify eight technical requirements that you would consider important, when deciding upon a particular control valve?

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