how to check control valve was passing?how to check online?

3 Answers  

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what is The specifications for oriface instalation

0 Answers  

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why we are using drum level control valve air to close?

0 Answers  

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What is Loop Test & What is Loop Checking? Please i need answer for these questions.

2 Answers  

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PLS TELL ME THE FUNCTION OR PRINCIPLE OF CREEP RELEIF VALVE..

3 Answers  

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line up procedure for dp type flow transmitter?

0 Answers  

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what is the dp across a orifice plate & how much is permanent pressure across an orifice plate.

2 Answers   HPCL,

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What is Burnout feature in a recorder?

1 Answers   CCIE,

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IS there any effect of vortex in low pressure side of the transmiter after the orific in feed water line? if yes then what is the calculation?

0 Answers  

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what are the use of belew gear in general ??

0 Answers  

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Why we use 4 to 20 mA, (This is International Standard) instaed of this can we use 4-16, or 4-24 or 3- 15 or any other range

13 Answers   ONGC,

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what is plc?

27 Answers   HPCL, KRL, Noor Company, Petrochemicals, SS Automation,

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