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,

The performance of a pump is monitored by measuring the ________ and _________ pressures

1 Answers  

what is function of PLC, and how is it work , explain with difination

1 Answers   Bapco Bahrain Petroleum Company,

without color coding, without nameplate, without multimeter how can you find the type of thermocouple???

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What are the reliability data ,like failure rate etc,for bently nevada systems & vibration probes.

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Working principle of magnetic flow meter ......and calibration procedure of e+h magnetic flowmeter...

0 Answers  

uses of profibus?

1 Answers  

What is the working principle of sox, nox analyzer?(opacity monitor) Otherwise how to measure the sox,nox?

1 Answers   Thermax,

what pressure transmitter?

8 Answers   Bhel,

What is scan time of PLC?

2 Answers   Gujarat Borosil,

what is the T/C & RTD mesuremaint?

3 Answers  

What is the difference between a Extension cable and a copnesating cable.Where can we use compensating cable. Is anywhere compensating cable are used for mv transmission to the indicator.

1 Answers  

Can anybody tell which type of quections are asked in interview for projects? plz give its urgent.....!

2 Answers